Using the board to build a weather station, I had previously tried a standard ESP32 board, but it drained the battery in only 4 days.
With this board it is possible to have a truly interesting autonomy.
WiFi range is really significant, I didn't try the bluetooth.
Icing on the cake, I received the board only one week after order, but I am in Europe !

Tripp | Nov. 3, 2020

Pretty good.

For USB to Serial / UART 5V or 3.3V ($6.95)

It is overall good quality. As others have noted putting a note on the silkscreen on the direction for the different voltages would be helpful. It does use a mini usb connector so I had to dig up a cable for that but I should’ve noticed that.

Jean-Marc | Feb. 25, 2020

Ordered 2, arrived quickly in Switzerland, work like a charm

For ESP32 Dev Board WiFi+Bluetooth

The two boards arrived quickly, they worked well and are very handy with breadboards. The 4 available leds (1 blue and 1 RGB) will simplify show simple status during development (so far I had to blink one at various rate).
The schematic is not totally up to date apparently, but this is documented in a note.
You find the ports of the LED in the pinout and the schematic.
Much better that the chinese boards for development so far.

Mark | July 19, 2019

Nice ESP32 board w/RGB LED, and auto-load WORKS!

For ESP32 Dev Board WiFi+Bluetooth

I'm just learning to use ESP32 after plenty of experience with Arduino. I bought some cheap ESP32 boards from Amazon but the auto-load function did not work, requiring me to press two buttons in sequence for every code upload. I found this Tindie board auto-loads every time. Also, it provides an RGB LED that's nice and bright and very useful. Beware though, this board has 40 pins unlike the typical 38 pin design, and it's 2.3" long instead of 1.9", so you'll have to roll your own case design.

Seth | Nov. 28, 2018

Not unique

For 5V 1A Switch-Mode Voltage Regulator, 40V Max input

Thanks for helping me discover switching LM7805 replacements, but I can get CUI VXO7805-1000 for half the price.

Response from EzSBC | Nov. 28, 2018

It is true that that module cost less than the PSU3-5 but its and apples and oranges comparison. The PSU3 and PSU2 families of regulators require NO external parts and can be plugged into a breadboard and will "just work". The CUI modules require external capacitors to work and the placement of the capacitors is semi-critical. If they are too far those modules oscillate and may expose your circuits to voltages higher than 5V when they oscillate.

Margaret | Aug. 16, 2018

Very good, can't fault anything.

For I2C bi-directional level shifter

Storm damage took out my previous commercial sensor system, so needed to create a quick replacement.
Am using 4 inputs of this module to read 2 PIRs, beam-break, and magnetic door contacts.
Using 12v high side for sensor relay contact pullups which short to 0v when triggered.
Low side outputs connecting to an 8bit PCF8574 port expander on an ESP-8266 running a brilliant new firmware called Annex Wifi Basic which has not even been released yet.
The seller knew of my situation and despatched the modules (I bought an extra as a spare) the very next day prior to going on summer break. They even added something extra which I had not ordered or paid for... thanks guys.
Can't praise them or their product highly enough, and the only reason I didn't give them perfect scores across the board was because it may have devalued the review by appearing to be from an insider, which I am not.
Excellent.

Vishnu | June 2, 2018

Works Fine

For ESP32 Dev Board WiFi+Bluetooth

I had been looking for some breadboard friendly ESP32 breakout boards and this one proved to be one of the best. The PCB is compact and of good quality. But the silkscreen could've been better. It's difficult to read the pin names printed on the PCB. I like the RGB LEDs and the smaller CP2104. But one thing I did not like is the push-buttons. They're easily breakable and one of the boards I bought came with a damaged push button. But I can fix that. But my suggestion is to use a better push-button probably with metal covering. I bought three of these boards in a single order and thanks to the seller, he sent me ESP32 revision 1 boards.

Michael | May 9, 2018

highly compatible

For ESP32 Dev Board WiFi+Bluetooth

I'm using this with Lobo Micropython and it loads and runs well. It seems to be compatible with WROVER based boards. Would like extra SPIRAM for heap space.

Pär | April 15, 2018

Great product and great service!

For 5V 1A Switch-Mode Voltage Regulator, 40V Max input

A very good product with very good assembly quality and fast shipping, works very good for my little Olediuno that is going into my car, highly recommended!

Larry | May 22, 2017

Great little adapter.

For USB to Serial / UART 5V or 3.3V ($6.95)

I found this unit to be perfect for communicating with embedded Linux controllers that use 3.3V serial. Plugged it into my Windows PC, it quickly enumerated as COM3, and PuTTY connected straight away.

As others have noted, the 3.3/5V select switch could use some silk-screening, as I lost the documentation almost instantly.

Fortunately, Daniel quickly responded to my query: "When the switch is closest to the USB connector, the module provides 5V. When the switch slider is closest to the connector end the module is in 3.3V mode." Thanks Daniel!

Mubarak | March 13, 2017

Perfect!

For 5V 1A Switch-Mode Voltage Regulator, 40V Max input

I bought this item because I needed a steady 5V output from a 12V input and linear regulators were running really hot. Dropped one of these babies in and everything's chugging along smoothly.
Its literally a 7805 replacement, so with the component side facing you (i.e the side with ezsbc.com written on it), the pinout is: Vin, Ground, Vout.
Definitely recommended!!

Charles-Henri | Feb. 20, 2016

Excellent, but there's no indication on pinout on PCB

For 5V 1A Switch-Mode Voltage Regulator, 40V Max input

Great product, just what I needed. I didn't pay attention when I bought it, but there is no indication on PCB on pinout function. I do not have documentation or voltmeter each time I need to use it.
Adding this information on PCB silk would obtain 5 stars on each category.

Charles-Henri | Feb. 20, 2016

Great but missing 3.3V/5V switch indication on PCB

For USB to Serial / UART 5V or 3.3V ($6.95)

Great product, just what I needed. I didn't pay attention when I bought it, but there is no indication on PCB on what position the switch is for 3.3V or 5V, I do not have documentation or voltmeter each time I need to use it.
Adding this information on PCB silk would obtain 5 stars on each category.

Josh | Jan. 10, 2016

Great little bit for your kit!

For USB to Serial / UART 5V or 3.3V ($6.95)

We use usb to serial adapters all the time, when we start out with Arduino, most boards we buy have it built in; but as we grow, we find different needs/requirements result in different chip/board choices. A good usb-serial adapter is essential. This fits the bill perfectly & is easily adjustable for voltage supply. This is a great little board & compact. The usb port is solidly mounted and has survived being tossed about & a lot of abuse -- more than I can say for some of the other boards I've tried.
Recommended! you won't be disappointed.

Michael | July 19, 2015

Excellent

For ESP8266 Breakout Board, Now with 1024K Flash

An excellent ESP8266 breakout and development board. Compact and easy to use. I have 3 now. I am using it with the Arduino development environment rather than LUA.

Josh | June 13, 2015

Gotta love buffers!

For 12V Level Shifter and Buffer 2x6 Channel

Nice little level shifter, the fact that it jams two on there & is buffered is a great bonus. Not as small as expected, but it's no giant either...

Josh | June 13, 2015

Great easy swap out!

For 5V 1A Switch-Mode Voltage Regulator

Works like a charm & seems to work much better than the regulator it replaced.. Size is awesome and efficiency isn't bad either.

Ben | May 30, 2015

Really nicely designed device

For ArduRF1s Arduino with RF-link and Battery Power

Using it for wireless comms and this was the sweetspot with easy and cheap, The solar charging and batter operation means I am going to buy more for new projects!

David | Feb. 14, 2015

Brilliant idea, perfect for prototyping and final assembly

For 3.3V 1A Switch-Mode Voltage Regulator

More and more these days we're using sensors, displays, and components that run only at 3.3V, yet are getting power from USB connections and/or microcontrollers operating at 5.0V. This handy little device makes it easy to provide 3.3V power, fits in the same space (and pinout) as the typical LM780X low drop-out linear regulators, but is a more efficient switching design. I also like that you can order the unit with straight pins, right-angle pins, or no pins. (I needed a no-pin version for my project.)

It would be nice if a future version labeled the pins in some way. I always have to stop and check (looking to see which pin has a square solder pad) to be sure.

The seller was very accommodating and great in communicating about my order. Highly recommended!