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Geppetto Electronics

2,366 orders since Jul 17, 2014

Farmington Hills, MI, United States of America

Ships from United States of America.

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The store will be closed November 23th through December 8th. The store will be closed January 1st through April 5th.

Overall Rating:

Review Breakdown

5
80 4
65 3
14 2
3 1
1

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Average Ratings

Product: (4.76)

Documentation: (4.23)

Shipping: (4.75)

Communication: (4.70)

All Reviews

William | May 24, 2024

GPS Adds Game Changing Capability to Consumer Timekeeping

For GPS Clock

Over the years, the tech toys that engage the casual time-keeping enthusiast have evolved from 60Hz AC clocks to the revolutionary Heathkit GC-1000 shortwave-disciplined digital clocks to the current crop of 60kHz VLF-disciplined clocks. Displayed time accuracy in sync with shortwave standard time broadcasts has been a gratifying accomplishment to the Time Geek in many of us. The next r/evolution is here with the Geppetto GPS clocks! Instead of a synchronization process that may take several minutes, the Geppetto GPS clock is already synchronized the instant the time is displayed. After an initial process of accumulating the almanac of GPS constellation data, the time is displayed with superb accuracy. Just like listening to shortwave time signals, you instantly know The Time at your location, no guessing about whether your clock is synchronized to a shortwave or VLF source. With GPS as your reference, you don't have propagation issues; there is the occasional "no GPS" notification when the constellation and your antenna placement isn't optimal, but that is rare. There is a display setting to guide you for the best antenna placement, and a multitude of display options for everyone's taste. Several options are offered for the clocks, such as GPS antenna and custom housing. If you are a time enthusiast looking for a no-compromise digital chronometer, you should check the devices offered at Geppetto Electronics. -BW

Don | Dec. 10, 2022

First USB to TTL with USB C connector

For FTDI-be-gone

Good break out of all signals. First USB to TTL with USB C connector. Some issues with drivers for a board which was not supposed to need proprietary drivers, but proprietary drivers seems to be the norm with Windows 11, (historically all version of Windows! Thanks Microsoft!) Seller worked with the Buyer to help resolve the driver issues and the help was appreciated. Thanks.

Joseph | May 5, 2021

An EV emulator that saves you $100s

For EVSE Tester

I'm not saying it does everything pro installer test gear does, but from what I saw, those items cost $250, $700 or even more. This does the basics -- great for determining if an EVSE is working and for troubleshooting and repairing it, even if you don't have an EV onhand. That's what it did for me.

Nick was quick and responsive to questions about usage.

Make sure you look at the mode markings on the board, not the dip switch numbers -- it's too easy to think of 1 as Mode A, when the switch is oriented so 4 is the first switch in succession.

Charles | May 4, 2021

Fantastic little device

For EVSE Tester

I use the device for security testing EVSEs. It allows me to put the EVSE into different states that each have their own security implications.

The device was a breeze to set up and use. The output in JSON format (usb version) is a nice touch - standing up a little Flask app that interacts with it was easy.

If you do any type of testing of EVSEs, pick one of these up and add it to your toolbox.

Johann | Feb. 26, 2021

Prefect

For Annoy-o-tron Tiny

Absolutely super. I bought two, put them at different spots in the office. Very hard to find. Truly annoyed people. Huge success.
H

Tom | Dec. 27, 2020

What is your time worth? Good exchange of money for time!

For GPS Clock

If you are technically savvy, you'll like this clock. It's easy to set up. I used my own antenna and a spare 5V wall wart. It took 5mins or so to sync when first started. I got the blue led version for personal reasons. I have other GPS time keeping gizmo's on my desk. This clock gives me a visual display of the time that everyone is chiming to. I will probably purchase another unit and set it to UTC. They should look pretty good stacked.

Neal | Nov. 16, 2020

Great Seller, Great service, product works fine as it should

For GPS Timing module breakout

The product works really well, as it should. Documentation is a little light, but there is enough info on google to figure it all out. The seller has outstanding communication and service. A very fair deal for a product that works really well.

Nathan | July 11, 2020

US built GPSDO with timing GPS from Tiawan with schematics.

For GPS Disciplined OCXO

I thought about buying one of those cheap GPSDO units from eBay but glad that I did not. After looking on the EEVBlog forum and getting some inside pictures and realized that they all use standard GPS modules and there was no schematics, help, or support my decision was made. This unit uses a SkyTraq Venus 838LPX-T chip from Tiawan that is rated for timing use and has all the schematics available.

The unit was able to lock on to the GPS satellites after a 5 minute or so acquisition. It took about a hour to get to level 1 and about 24 hours to get to level 2. It has bounced back and forth between level 1 and 2 several times while the OCXO aged and stabilized over a few weeks. It now sits on level 2 other than during thunderstorms or after a power outage. Since my location is not terribly far from Ft. Collins, CO I did a sanity check using a HF receiver and was easily within the margin of error doing such a comparison.

I did contact the maker with a question and was responded to. There was not really a malfunction just something that could of been improved and did end up improving my unit. Since the project is open source the improvement may make it to a future version.

On a previous review I noticed that a there was a post on a problem with the GPS. I did not have any problems at all using a ONSHINE ANT-555 placed on a ledge next to a non screen window that worked with no problems. The big thing is that the antenna needs to operate at 3 volts. I also recommend the antenna have a datasheet, use less than 20mA, have good gain, and have a low noise figure. Here is a short list of currently available antennas from Mouser that should work well: Taoglas AA.105.301111, Linx ANT-GPS-SH2-SMA, TE 602439004, Pulse GPSGMSMA, ABRACON AEACMK0660746-SG4 . You only need a singe band antenna since the GPS chip only receives the GPS L1 band. You can use a higher voltage antenna using a external bias tee if you need to.

Thanks to Nick for a great US built product.
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Response from Geppetto Electronics | July 11, 2020
Thank you very much for your kind words. The only addition I’ll make is that for antenna power there is a solder jumper on the board to select between 3.3v and 5v antenna power. You can also, of course, as stated use an external bias-T.

Steve | April 30, 2020

GPS Clock works great

For GPS Clock

Assembly went pretty quickly and I found a good GPS lock for the antenna on a window sill. For me it's useful that the antenna lead and the power cord are located on the sides as that allows placement in a shallow area. Assembly instructions are online only but are pretty descriptive. A couple of assembly pictures would be nice.

Thomas | Jan. 28, 2020

Antenna placement is important.

For GPS Clock

The GPS clock has to continuously receive the signals from the satellites in order to continuously display the time. I tried putting the antenna in a south facing window and the clock showed the time about 80% of the time. I expect that the fact that my house has aluminum siding was causing problems as that would block the signal from many of the satellites. I bought an extension cable for the antenna intending to put the antenna on the roof. But a friend suggested that I try putting the antenna up on the second floor or perhaps in the attic. With the antenna on the second floor about 3 feet above the floor the clock showed the time about 95% of the time. With the antenna in the attic the clock shows the time 100% of the time.
I bought my clock in kit form and had no problem building it. But I have worked as an electronic technician. If you have no experience soldering parts to a circuit board then you should probably buy it already assembled.
The antenna specifies that it wants 3.3 volts for power but my clock came setup to supply 5 volts. This does not seem to cause any problems but I re-jumpered it to supply 3.3 volts.

John | Jan. 25, 2020

excellent board for the FE-56x0a Rb oscillators

For FE-5680A GPS Discipline module

Works great, I just wish there was a little more concise documentation. I was able to figure out most of my questions from the schematics and the project log entries on hackaday.io, but putting all the pinouts and mode description in one place would make it a little easier to use.

Hans Georg | Dec. 28, 2019

I am pretty convinced about this product,it does its job per

For Crazy Clock

A good procuct if you are involved in astronomy .
I used it to make an astronomical clock to show our stars during days and night and it works fine

David | Dec. 14, 2019

works well and is surprisingly robust

For AVR ISP Pogo Adapter kit

I've used this pogo adapter to program at least 500 devices, not including the 500 times I've used it on one device while debugging. :-) It works well and has held up nicely. If the pins become misaligned, it's easy enough to gently put them back into place.

Dave | Dec. 14, 2019

a fantastic little programmer

For USB µISP

I've had several Atmel programmers over the years, including a (now dead) AVRisp mkII, and a (now dead) Pololu PGM03A. This one has withstood the test of time and many, many programmings. I used it with a pogo-adapter for programming literally hundreds of boards.

I really like the switchable power, a great convenience and saves me from having to make some kind of mezzanine jig for providing power to my boards during program+test.

Thomas | Nov. 3, 2019

It's crazy.

For Crazy Clock

The crazy clock is crazy. I bought the Wavy clock and it works just the way it is described. A very interesting effect.

Andrew | July 23, 2019

Nice little clock does what it is supposed to do.

For GPS Clock

I asked questions before I placed the order for a clock. The seller was nice to answe all of them.
I placed the order on Sunday night. I received it on Tuesday morning. The seller and I are next county neighbors (25 miles away).
First of all, I am no electronic wizard. My knowledge about electronic are high schiool level. I have never done any soldering in my life. I don't know circuitry. I am able to plug in the power and the GPS antenna. The same kind of skill to set up the "over the air" TV broadcast signal.
I waited for about five minutes, and 'No GPS' disappeared. The clock runs as it is supposed to be with HH MM SS s.
I was able to use the two buttons on the back of the clock to adjust display brightness, set time zone (UTC off set). I did not read the documetation and still be able to figure it out on my own.
The size of the digit is about right. I think it is a little bit higher than 0.56 inch tall.
I am surprised that this unit only consumes 0.075 Amp at the peak.

Rolf | July 19, 2019

The best Combo (GPSDO + Rubidium Standard) you can buy.

For FE-5680A GPS Discipline module

Amazing quick start and GPSDO lock. Build quality superb. The Rubidium Standard looks like brand new.
Excellent support quick and with expertise. The seller doesn’t let you unattended with open questions.
Rolf

Alejandro | May 17, 2019

Well built!

For GPS Timing module breakout

This is an excellent product! It has a small footprint, and an easy to read pin outs silk screen.
. . . . . . . . . . . . . . . . . . .

Scott | Feb. 6, 2019

This works as Described

For Raspberry Pi Zero Clock

One note, on my unit the spacers holding the raspberry pi zero to the clock board were a bit tall and would sometimes not make good contact. I just shave a bit off of them and no issues now.

Jim | Jan. 8, 2019

This is the BEST GPS clock kit I've seen!

For GPS Clock

This review pertains to V3.1, which is what is being shipped as of the review date. A new version in in the works. I bought the 'quick kit' and used my own 5V power supply, GPS antenna, and case.

OK, the BEST, but not perfect. First, the GOOD stuff. Nick has taken the care and time to get a LOT of details right. The clock does Daylight Saving Time (and this is not a simple matter with a GPS clock). The displayed time is not just synchronized to the NMEA message from the GPS receiver, but actually uses the GPS PPS signal to advance the seconds (I have another maker's GPS clock that doesn't use the PPS signal, so it has an error of a few tenths of a second - not a huge deal, but not right either). And this clock has tenths of a second. Honestly we all know that's totally pointless for practical purposes, but I wanted it anyway (you do too, I know...).

The user interface is simple to use and intuitive. So, setting the time zone, display brightness, colon mode (off, on, or flashing), tenths digit, and a couple other settings is fast and easy.

Here's what I found that I'd improve, were it my product. On the V3.1, the AM/PM and colons flicker annoyingly at a rapid rate ( a few Hz, coincident with the tenths digit count -the flicker goes away if you only use max brightness). Nick is aware of this, because I returned a model so he could see it himself. I was able to fix it on my clock by adding a 33k resistor from the AM/PM LEDs to ground. Nick and I both spent a fair amount of time pondering this issue, and agree it arises from fact that the Maxim LED driver chip is driving different style of LEDs (0.56" 7-segment, 0.3" 7-segment, T1-3/4, and T1). The Maxim chip is being designed out in the next version, as I understand it, so this issue will be moot at some point.

The LEDs are bright. Too bright in a bedroom, for example, and the dimmest setting is still too bright, at least for me. It'd be nice if there were more range available in the dimmed settings.

The connectors stick out the left and right side of the PCB, which means the cords that plug into them are visible. IMO, having them exit toward the back would be better.

The GPS antenna needs to be mounted where it has a clear sky view. If you plan to keep the GPS antenna indoors, you might find (as I did) frequent 'NO GPS' being displayed. I design RF circuits, including embedded GPS for a living, and I think it'd be possible to get better GPS sensitivity, at least based on comparison to GPS that I've used in other devices. GPS is very sensitive to on-board noise, and I think the switching power supply and Maxim LED driver might be pushing some noise into the receiver or antenna bias line, though I have not investigated this in much detail. The good news is that the micro in the clock just needs a UART line that contains some common NMEA message - I patched in a NEO-6M, and it worked fine, so you're not stuck using the GPS implementation on the board.

If the PCB was smaller, particularly in width, it'd allow more case choices. There's about 3/4" inch to the left and right of the display that forces the case to be wider than needed. Similarly, the display in not centered vertically. Not a big deal, but if you like symmetry you need to offset the board and use an otherwise- oversized case.

The AM/PM LEDs are useless, IMO. I removed mine.

So, there's the good and bad, as I see it...

Bottom line: Would I buy another one? Yep - I already did! As I mentioned, there's nothing better in a GPS clock kit.

Michael | Sept. 9, 2018

Comes with all necessary components

For Toast-R-Reflow Power board kit

Very useful to find a power module that does not require any extra components. Easy to assemble, but could use a few more photos/instructions especially a side view of the triacs, as I mounted mine a little lower than optimal for best heatsink contact.

Thermal paste and standoffs are recommended.

Beginner friendly, I only had to review resistor identification.

Mounting holes are a bit small for M3 screws, but they fit without problems.

Michael | Sept. 9, 2018

Great hackable PID controller

For Toast-R-Reflow Controller

Great hackable PID controller (type ii), requires ftdi cable.

Fits into a standard 16*2 LCD display holder that I got separately, it's also easy to find 3d printable enclosures.

Could use a few more photos/reference diagrams of the board.

Very responsive to emails and inquiries.

Gordon | July 3, 2018

Looks Great

For FE-5680A GPS Discipline module

Looks and works great. Very well made. Locked up very quickly. Could use some more detatiled user instructions to allow more efficient utilization by someone not familiar with GPS technology.

Corey | May 15, 2018

Good, but the documentation is lacking.

For AVR ISP Pogo Adapter kit

I realize the designer has answered at least two people who said there was no documentation, and their is some. What is not mentioned in the docs is that the pictures show a different board than what is currently shipping. In the pictures, the pogo pins are soldered in the holes that have the pinout labeled. This seems logical, since you can then line the pins with the target, assuming they are labeled. And the current board shows pin one in the same place as the pictures at the edge of the board. However the current board clearly states "Pogo pin side" on the opposite side of the board, where there is no pinout! When I looked carefully, and read the documentation, nothing was mentioned about this anomaly. Since the silk screen is only on the "Top" of the board, and the pogo pins go out the bottom, it does not mean that the pins go out that side.
I guess it does not really matter, the pins will work either way, you just have to make sure you plug the cable in correctly, but I think I want the pogo pins to be labeled, not the connector, which means that you can look down the side of this board and see pin one on the target, as opposed to pin one being in the middle of this board.
I am still not sure what "Pogo pin side" is supposed to mean, but the pictures have not been updated, so it took me a while to work it out. I'm ignoring the"Pogo pin side" label.
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Response from Geppetto Electronics | Aug. 27, 2021
The holes on the "pogo pin side" end are slightly larger than the holes on the opposite end, which is intended to accept the 2x3 pin header. This is because the diameter of the pogo pins is somewhat larger than the 2x3 header pins.

Alan | Jan. 31, 2018

A great and accurate clock!

For Crazy Clock

I have two of these clocks; a martian 24 hour clock and a custom 24 hour clock. Both have been running very accurately, and also quite quietly. If it gets absolutely silent and you try to focus on the ticks, you will hear them. I accidentally misplaced the hands and lost them, but they were easily replaced by a common set of hands from a different clock. I'd totally recommend one to someone interested in something different than the traditional style of clock.

I'd love to buy another, and probably will sometime!

Charlie | Oct. 15, 2017

Very handy.

For AVR ISP Pogo Adapter kit

A simple design that is very handy if you have multiple boards to program. Use with USB uISP which writes firmware faster than an AVR Dragon.
If you ruin or lose a pogo pin, SparkFun has them, but Adafruit's (different but similar pins) are 1/10th the price.

Charlie | Oct. 15, 2017

Works well with avrdude, well-designed.

For USB µISP

This programmer is tiny and works well, and in particular writes firmware faster than an AVR Dragon. LED tells you when it's working.
My one feature ask would be exposing at least the power/ground if not all 6 pins on a pass-through connector for goofier setups, like an external power supply to the device being programmed.

I did have one die (unrecoverable by waiting for polyfuse) under mysterious circumstances that may well have included me short-circuiting somewhere.

Chiche | Oct. 12, 2017

Good and handy tool for Arduino development.

For USB µISP

Excellent product with good quality. Talked to designer and communication is great as well. highly recommended.

Patrickt | Oct. 10, 2017

Outstanding!

For Orthrus

I am a recent "early adopter" of version 2 of this product. I purchased this as a "think piece" for use in exploring cybersecurity-related processes, defense in depth and two person integrity in a non-DoD environment. The construction materials and assembly technique was very good, and the product operated very much as advertised. The documentation, though simple, is more than adequate to quickly configure and use the device. That added to that the accessibility offered by it's Open Source roots makes it perfect for my purposes.

I recently received an unexpected package that contained the latest revision of the board, along with an explanation of why it was re-issued. While I had not personally experienced any shortcomings, Nick's highly proactive approach to customer service is absolutely second to none. Players in the open source marketplace would stand to learn a lot from him.

Dmitriy | Oct. 5, 2017

Good project with little to no alternatives at the moment

For J1772 Hydra

If you have two electric cars, you need something like this to lead a normal life.

By the moment of this writing, i have been using Hydra to charge my cars for 3.5 months, and i am as happy as can be.

There are not many options in that case. The simplest one is to install 2 chargers on 2 breakers. That might not be possible (as it was not for me), as it adds to loads on the panel -- one may run out of capacity both amperage and space wise.

Then, one might try and find dual head chargers on one breaker. Not many at all as far as residential options are concerned, and they all cost a little fortune (we are getting into double digits of a percentage of the car cost itself!). Given the standards seem to move pretty fast, this does not look like a good expense at all.

And there are absolutely none that one could just plug in.

Hydra has it all -- and it does it in a very compact package. Ability to run shared and sequential modes in residential settings are superb and are exactly what one needs to keep things running smoothly. TOU scheduling is present (I actually extended it to 5 events to accomodate half-peak options of my tariff).

There are a few things that add to the cost though:
(a) one needs to be ready to mess with the assembly process. This requires time, tools, and some experience. That said, if you build your own computers like I do, this should not be a great problem (assuming the process of assembly is well understood).

(b) Bill of materials could be better. There are less expensive alternatives and suppliers on the list. Some little things might be mentioned (like e.g. hanging tabs for the poly case -- if you don't order them at the same time, that's 2x shipping charge on a separate order for a very small accessory). Packard contactors @ open evse store can be used, but i ended up using these ones (they were @ $9 apiece at Amazon at that time) -- they are also compatible: https://www.amazon.com/gp/product/B01J4Z8SZU. I bought a lot from amazon; but mounting hardware seems to be better bought @ digikey, along with a few other components.

(c) There may be a few bugs.

The PCBs by OshPark are not QA'd, i had a missing path on mine, which was not obvious until i went back to Nick to analyze it. Luckily, I lived not so far from him. Otherwise, it would've been pretty hard to figure out if it was my mistake or faulty PCB's or something entirely else. I don't have necessary expertise for this kind of trouble shooting. Sequential mode was broken in the latest firmware, i had to fix it and a few other things, i PR'd the updates to Nick's github.

(d) Documentation was generally easy to follow, but I see how first time experience may lead to a wiring error, which is especially something you don't want to do with the HV componentry.

(e) Design: there are limitations. Two major features that are missing in comparison to modern EVSEs are wifi with cloud analytics (or a phone app of the same), and temperature throttling. I do not care much for the analytics (my Tesla app is going to tell me everything i need to know), but the temperature throttling is an important monitoring and safety feature IMO. Open EVSE has been having it for years now; so is the L1 EVSE that came with my car. I am planning to implement temperature throttling addition to the firmware as soon as i get a Hydra version with an I2C header to connect one of the cheaper sensors found on Amazon. That should be easy enough. I found that a spurious false ground fault error may occur that would prevent cars from completing the charge process. Open EVSE apparently has this issue too, so they added a feature that would automatically attempt to restart the charging up to 4 times. I added that feature, among a few others, in the latest Hydra patch as well.

Conclusion: this is an excellent design, customizable as well, but one should be keenly aware that like all DIY projects, this is not exactly a plug-and-play project.



Leslie | Aug. 17, 2017

Works flawlessly and great customer service

For GPS Disciplined OCXO

I was looking for a GPSDO and was hesitant to buy one of those used ones on Ebay. When I ran across Nick's website felt more confidant about what I was getting because of all the posted test data. Nick was very helpful and the GPSDO arrived relatively quickly (even before the GPS antenna I had ordered on Ebay). This GPSDO is smaller then a pack of cigarettes and just works flawlessly. While Nick is very responsive to questions it would be helpful if there were a concise users manual available for it. I am using the OCXO version as an external frequency reference for my Elecraft K3S transceiver.
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Response from Geppetto Electronics | Aug. 17, 2017
Thank you for your very kind words!

While at present you're correct that there isn't a formal manual per se, there is extensive documentation of the design and operation over at the Hackaday project page, which is under the "Documentation" link on the store page.

Edward | July 13, 2017

Perfect for AVR ISP in-circuit programming

For AVR ISP Pogo Adapter kit

Promptly shipped and easily assembled - probably took me 30-minutes and I was going slow and careful. No documentation but not a lot was needed - I just referred back to the two photos in the tindie listing. I placed a piece of cellophane tape over the holes for the pogo pin top while soldering the lower board in order to keep them at the same height, soldering the lower board and next the upper board - of course after removing the cellophane tape.

I was going to make my own adapter but this was easier and just as economical.

I highly recommend this product - IF you have the tools, i.e., soldering iron, etc. If not then try and find one already assembled.

I didn't rate Documentation or Communication because (1) there is no documentation (use the photos); (2) I didn't attempt any communication.
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Response from Geppetto Electronics | July 13, 2017
Thanks for your kind words!

If you look near the bottom of the right hand column of the product page, there is a documentation link that will take you to the build instructions.

That said, the build instructions are almost identical to the technique you used. :)

Robert | June 23, 2017

Use with RasperryPi ham radio repeater controller.

For Pi Power

This is my second purchase of the Pi Power. I use the Raspberry Pi as a controller for ham radio repeaters, and this allows the use of the radio 13.8 vdc power source to power the RPi. We have had no reliability issues over the past year or so, using this configuration. Using the radio's 13.8 vdc does require inserting a diode in series to add one diode voltage drop to assure the power source does not over voltage the Pi Power. Not an issue.

David | May 22, 2017

Very good and excellent support from the developer.

For GPS Clock

I built the clock from the kit, and put it into the supplied enclosure. It went together easily and worked first time. Anyone who has done any soldering before will have no trouble fitting the parts with a bit of care.

I had a couple of questions and contacted the developer who was able to advise me very promptly.

I bought the GPS antenna and it picks up the signal in an upstairs room with only a couple of small roof lights. I have seen it lose signal only a couple of times, presumably because of a particularly bad position of the satellite constellation at that time. If it was critical I could position the antenna outside.

Due to a leap second update added recently, the clock is 2 seconds fast for approx 5 minutes, before it downloads the correction details, and then it is exactly correct.

The developer is now revising the design to include a backup super capacitor to store the correction so that if there is a short power interruption, the clock will not have to wait for the leap second correction.

The LED clock display is bright and easily seen in full sunshine, and can be dimmed if you wish. The separators between H,M,S are decimal points, not colons which would have been nicer.

The case is laser cut wood and can be painted, or stained as the developer suggested to me. I may do that. Black stain with the dark red acrylic front would look very good I feel.

One other wish would have been for the antenna and power connections to have been on the rear rather on opposite sides, it would improve the appearance and make it easier to place beside other equipment on a shelf.

The software is well thought out, giving all the options I require - Timezone, DST, 12/24hr, tenths of a second on or off, brightness control.

The flashing LED for GPS fix is annoying, and not necessary, so I fitted the LED on the rear and can only see it through the hole beside the antenna socket now. New boards will have a small LED on the rear as standard. It isn't needed at all as the clock displays NO GPS while it is unlocked anyway.

I bought a small linear plug top 5V power supply for the unit, but it turned out to be unregulated and the voltage was too high as the load was so low, it caused no damage fortunately. I fitted a small 5 V linear regulator and that cured the problem. I would advise buying a proper 5V regulated supply, the one supplied from the developer would be fine I presume, I did not buy one because I was unsure if it would have a UK plug and used switched mode regulator which I am wary of because of potential RF noise issues.

I have noticed no RF interference or RF immunity problems at all with the clock, which is important to me in my ham radio station.

The buttons for setting it are on the rear and require something like a paper clip to press them, fortunately they are mainly set and forget.

The price is very reasonable, especially if you are in the USA, however if you live in the U.K. be aware you will pay VAT and handling charges which adds quite a bit to the total. It is still a good deal I feel.

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Response from Geppetto Electronics | May 24, 2017
Thank you so much for your kind words.

The version now in the store has colons between the H, M and S digits and (as mentioned) the super-cap to preserve the almanac over brief (up to around 3/4 hr) power interruptions. Newer units also now have an SMD "FIX" LED mounted on the component (back) side (visible through the antenna hole).

The power supply available for purchase with the unit is a switching supply that accepts 90-240 VAC 50/60 Hz, but has a North American plug. A passive plug adapter would be sufficient for world-wide use. Alternatively, any 2W @ 5 VDC supply with a 2.1mm center-positive barrel connector would work.
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