Exactly what I needed to program ATmega4809 chips from Arduino IDE using a Mac and MegaCoreX. Plugged it in, selected the target, uploaded, and it just worked. So far the serial terminal has been 100% reliable for me too. I've now designed a couple of boards with the 6-pin header with the extra serial pins included, with total success. I've been a fan of MCUDude's work since using MightyCore on ATmega1284P many years ago, and this is more of the same high quality as before.

Now I'm just waiting for the SerialUPDI to be available for purchase again so I can buy a few more!

Stefan | May 27, 2024

Amazing high-quality board, works out of the box

For SerialUPDI programmer

I am a bare-metal AVR programmer, not using platforms etc. This SerialUPDI hardware interfaces between the host PC and the modern AVR microprocessors (which all use the UPDI interface for flashing), and it works like a charm. I just connected Vcc, Gnd and UPDI to the target with three wires and used a fairly recent avrdude version for uploading/downloading. Works even on one of the most recent Microchip MCUs (AVR16EB28). It's a joy to program hassle-free, it's a haptic joy to handle (microswitches instead of jumpers!), and the hardware looks great, too. The labels look crisp and clear. I can tell that a lot of thought went into the design. I love all the little details, eg, the white mask around the top UPDI header, so I can mark Vcc with a big red dot and Gnd with a big black one. UPDI is Pin 1, so has a visible corner: great for attaching free-flying wires on experimental boards without a header. I only needed a programmer, and was pleasantly surprised to see it doubles up as USB/USART interface. The 6-pin header is well thought through, and I will defo use that header for any new board designs of my own. Worth every penny, as they say in good old Blighty.

Taylor | March 31, 2024

This SerialUPDI programmer is absolutely awesome!

For SerialUPDI programmer

Thank you MCUdude for this programmer board. Not only was the shipping surprisingly quick for Norway to the USA, but the board looks very high quality and a great deal of care was clearly put into the design of this device. I highly recommend.

Chris | March 23, 2023

Great little UPDI programmer

For SerialUPDI programmer

Works perfectly for programming newer AVR chips. Compact yet concise, I have had no issues using it for projects utilizing 4808 and AVR-DA chips.

I ended up utilizing a right angle 2x3 female header to allow the programmer to be perpendicular to the board being programmed. This also allows access to the mode switch on the bottom since, as documented, the auto serial functionality is not consistent with MacOS and the Arduino IDE; it seems to work immediately after programming but not always on normal startup.

Shipping from Norway was quite acceptable, 7 days from Norway to the US.

Chris | Feb. 2, 2023

Perfect solution

For microUPDI programmer

I had no experience with programming embedded chips before this. I purchased and built another project a while back that I wanted to reprogram with new features, and UPDI was the only supported method for doing so. I purchased this kit and a knockoff of the board it works with; the price was right, and even with my incredibly limited skills I was able to get it working without difficulty. This worked so well and I was able to figure it out in an evening. Thank you!

Johannes | Sept. 29, 2022

Great in all perspectives

For DIP-40 Arduino compatible development board

As an electronics hobbyist i wanted something a little bigger than the usual Arduino Uno and the Mega 2560 only comes in a SMD package. So the 1284 is my choice for a current project which would barely into Uno even with many optimizations.
I came across this board and after some time of consideration i ordered it here. Shipping from Norway to Germany was just 7 days.
What can i say: even as a non-professional user this thing is plug and play. I am using a Diamex ISP Programmer with the Arduino IDE under Linux Mint and burning the bootloader or sketches just took seconds from the first start.
One of my favorite features is the removable crystal in order to tinker with different clock speeds.
This thing probably is, what the Uno should be (but of course the Uno aims at different topics such as HATs and super easy start for beginners).
Can recommend although with the current weak EUR it's a little pricey and i had to pay like 10 EUR import tax.
Anyway, thanks to the maker for the great work in both, board and core !

Marle | Aug. 19, 2022

Cool and straightforward dev board

For DIP-40 Arduino compatible development board

I picked up this board so that I could tinker with the ATmega1284P MCU, and coming off of frustrations with an Arduino Uno clone, the MightyCore board was a huge breath of fresh air! I appreciate the use of mini USB as opposed to micro USB which in my experience has been more prone to mechanical failures. When working with a breadboard, I strongly recommend making your own jumper wires, as premade jumpers may have trouble reaching between the dev board's headers and your breadboard holes.

Oliver | May 25, 2022

Works like a charm

For microUPDI programmer

I've been using this for a while now to work with ATtiny3216s and it just works perfectly well. Works fine with ArduinoIDE as well as PlatformIO and avrdude.

Michael | March 12, 2022

excellent

For microUPDI programmer

Works great. MCUDude's cores, hardware, and instructions are all great. I have used one of these programmers for a little while now and it has become essential to my work. I bought this one as a backup (though there is no indication of any need for concern with my first one!).

Arthur | Feb. 10, 2022

worked great

For microUPDI programmer

Used it to program ATtiny chips with the arduino IDE. Only snag I hit was I had to use version 1.8.13 of the IDE but that has more to do with the megatiny core library. I plan to replace the pin header with a box header and use a ribbon cable to connect to the programming header on the boards. Serial communication was seamless.

Zsolt | Jan. 29, 2022

awesome

For DIP-40 Arduino compatible development board

Coming fro ESP32 world it was a bit new to me, but the sellers is a great guy, helped me to get things going. The board is amazing!

Luka | Dec. 5, 2021

A great product from a great engineer!

For microUPDI programmer

Fast delivery, excellent design, precise and extremely well-written instructions - perfect.

I use it with ATmega4809 and MegaCoreX, which is (among many other things) also a work from MCUdude.

The engineering world needs more people like MCUdude, because everything he does is very well documented and always works as published.

A real tribute!

Guus | Oct. 3, 2021

Very nice board, works as it should

For DIP-40 Arduino compatible development board

Board is well designed and works.
Changing the crystals is also good.
Improvement tip: Consider delivery option without socket, so a ZIF-socket can be installed.

Erwin | Aug. 31, 2021

One programmer to rule them all.

For microUPDI programmer

I have been using a simple UPDI programmer (made from a serial converter and a 4k7 resistor) for a while, but since I fell in love with the new AVR series microprocessors, it was time for a more robust one. MCUdude is well-known for his work on Arduino support for the new AVR series, so I tried his programmer first. And have had no need whatsoever to look at other programmers.
He created a nice pin-layout with the programmer for vcc (5v or 3v3), gnd, tx, rx and updi which can withstand inverted polarity. I use this layout for my UPDI connector on my boards as default.

Highly recommended!

PS. I made a printable case for it that can be found here: https://www.thingiverse.com/thing:4943607

Jonathan | Oct. 4, 2020

Excellent development board

For DIP-40 Arduino compatible development board

It features everything one could desire, in a small succinct package. This is the perfect board for testing and debugging your protos that involve DIP40 AVR's.

Bartosz | Sept. 2, 2020

Perfect little programmer

For microUPDI programmer

I am very happy that I've found your programmer. I've successfully programmed my board with it and now I am using it as USB to UART bridge.

I've got one issue, that is, the programmer "times out" frequently from Atmel Studio 7 and when that happens, I have to reboot my PC for it to work again. Other than that, great tool!

Matthew | July 23, 2020

There is a lot packed into this.

For ATtiny Arduino compatible development board

Came from Norway to Australia before I was expecting it, outstanding.
Very pleasant having UART to USB matching MicroCore pins. It just goes straight in. Saves a whole port .
It is clearly leaning towards t13 work with socketed crystal. Eliminates the need for the 4 pin can.
You will need more than 5v for the dc jack. 9 or 12 say.
Pins and sockets enough, although no reset button, I don't miss it.
Note that RTS# will reset for you upon serial connection, so if you have serial out, say, it just works.
Standard USB mini - same as "Nano".
A good little testbed even if you build on a breadboard, this is great for "what if?".
The only downside is that this is so well put together in the available space your own PCB design may now be depressing.

Response from MCUdude | July 23, 2020

Thanks for the kind review! Shipping times are all over the place at the moment, so I'm glad to hear it arrived in a reasonable amount of time.

The board is packed, indeed. So packed I couldn't fit a reset switch. But the reset line is broken out, so you could always add it if you ever need it. I always like to include a small potmeter on the dev board I make, because you never know when you need an analog reference voltage (for LCD contrast etc.).

The reason why I've connected the RTS# signal to the reset line (through the usual 10k and 100n auto-reset circuity) is so that the board will work perfectly if you ever decide to put an ATtiny25/45/85 in there and use a bootloader. If you do, the board will act exactly as you would expect from an Arduino board with serial uploads. Neat!

A fun little quirk I don't think many have realized; with a little transistor magic, I made it so that the RX/TX LEDs will only light up if the board is powered through the USB connector. They can, however, be changed to "always enabled" if you solder the tiny jumper on the bottom side of the PCB, under the USB connector. I thought some would find the inverted LEDs to be a little annoying when they aren't even using serial communication.

If you like the style of this board you should check out the similar DIP-40 development board I sell!

Kurt | May 23, 2020

Do what it's supposed to do.

For microUPDI programmer

Do what it's supposed to do. Is also displayed in ATMEL Studio 7.*********************************************************

Joshua | Oct. 30, 2019

Awesome ATMega1284p development board

For DIP-40 Arduino compatible development board

I am so glad I found this development board. I just received it today and already I have the bootloader burned into one of my atmega 1284p. The documentation is amazing too. Found one problem with the board, on the ISP header, the silkscreen incorrectly labels MOSI as MISO (MISO is listed twice in the pinout on the underside of the ISP header). Other than that, really awesome design :D

Response from MCUdude | Oct. 31, 2019

Great to hear you like the board! Together with MightyCore, it's a great development board indeed.
Thank you for pointing out the incorrect labeling on the ISP connector. I will fix it in the next board revision.

Martin | Sept. 14, 2019

Great dev board with great support!

For DIP-40 Arduino compatible development board

I was looking for a development board for DIP40 packages and this is exactly what I needed.
The documentation is sufficient and furthermore the developer MCUdude was super helpful with any problems I encountered, replies to my messages within few hours.

Highly recommended product with great support, 10/10.

Martin

Canlas | Jan. 25, 2019

Welcome to Rockin' Overdrived Arduino Mighty arduino core !!

For DIP-40 Arduino compatible development board

I'm an ex-old-small guitar tube amps manufacturer.

I use PlatformIO with the incredible Hans/MCUdude Mighty arduino core !

I re_born with some new goals !

Simply sublime, full integration, arduino with more pins with Atmega 1284P, more features and in a so easy way.

I'm like Alice in that new wonder world, something else behind the mirror...

It was natural to me to acquire this board, it give so many options !

Thanks Hans, you made my AVR world's exploration so cool.

Pascal

Thomas | Nov. 5, 2018

It works like a charm!

For DIP-40 Arduino compatible development board

Almost 3 months ago I received 2 boards from Norway. The boards came in a ESD protected package and after unpacking my first impression was the really good quality of the board (PCB layout, soldering, silkscreen, etc.). After connecting the board the only thing I can say: It works like a charm! Thumbs up for this product. I tested it with Atmel Studio and with the Aruino IDE under Linux, no problems at all.

What I will do in the next future: Replacing the socket with a zif socket and developing a TQFP to DIP adapter board for the ATMEGA324PB.

Great job MCUDUDE !!!

Thomas K.

Joseph | Sept. 29, 2018

An amazing AVR development board!

For DIP-40 Arduino compatible development board

This is such a great development board. Lots of careful attention was put into it.

* The silkscreen is clear and readable.
* Lots of GND pins for a logic analyzer probes.
* Male and female headers side-by-side.
* JTAG, ISP, and HVPP headers are broken out.
* 5V or 3.3V selectable.

Overall, it's a really nice AVR board and the shipping from Norway was fast.

Christopher | Aug. 13, 2018

Perfect little board for my need

For DIP-40 Arduino compatible development board

I needed a development board that would take fit an ATmega644 or similar for memory fit. The board itself is well constructed and works exactly as expected. The little perks and details that were added to enhance this unit beyond a base Arduino Uno style board make it well worth the investment.

Seller is very easy to work with, would purchase again.

D. | June 4, 2018

Very nice platform

For DIP-40 Arduino compatible development board

I was in need for a arduino compatible MCU for a project, and the MightyCore was the perfect solution. With the MCU between the Atmega 328 and 2650 it fits perfect for the application.
With the very well documented hardwareplattform for the Arduino IDE it was piece of cake to programm the 1284p in my project. The MightyCore PCB serves as a prototype for testing the software, and it worked like a charm for me.

thank you very much

Allianz Rémi | May 18, 2018

GREAT and QUALITY BOARD

For DIP-40 Arduino compatible development board

This board is great and useful, like I wrote another member : exactly what I'm looking for !
Bring together in a same side all I/O ports it's very usefull. Description fonction pin (and other information) on both side of board allow to don t waste time and missed error during wiring.
The size of board is ideal too, not to big, not to small.
Mignty core is great and useful add on too, and this core support many programmers tools.
Finallly, thank to MCUdude, for great communication and services.

Bence | May 9, 2018

Everything wents fine!

For DIP-40 Arduino compatible development board

It speaks for itself! Great design and building. Planned to manage a little greenhouse. My goal to develop in assembly language. As it is mentioned by the seller, its a more flexible devboard than the Arduino competitor. I love the DIP shaping.

Cory | April 26, 2018

Great Board

For DIP-40 Arduino compatible development board

This is a great development board! I've only had it for a day, and already love so many of it's features. The male and female headers on all the IO and power is great. Being able to quickly change the crystal is so nice. The simple fact that the board will work with a number of different processors will make it my go to board for quite a few projects for sure.

Cory Duce
ckdevices.com

Ingo | March 13, 2017

Ingenious product!

For DIP-40 Arduino compatible development board

This is exactly what I was looking for!
As using different sensors with different libraries on a UNO always results in low memory and a MEGA2560 is not available in a maker friendly PU pack I decided to go for an ATMEGA1284p-PU (40 Pin). This chip does have even more memory then the 2560 but less IO pins. As most sensor are running on a bus (SPI/I2C/Onewire) and multiple sensors can be connected on the same pins memory is more valuable than pins! This board fullfills all my needs - and more!
Just one thing which is missing in the describtion (I think): There is a little LED besides the power LED which is connected to PB0 (D0). Quite usefull for blink or status indication in your sketches.
There are other 1284 boards out there which are a smaller but none is giving all the features this board has for that price. I love the fact that I can run everything, including the 40pin 1284 on 3.3V with a jumper. This saves a lot of energy in case you want to run your project on a battery. The detailed describtion of every pin on both sides of the board is great as well (Little hint: In the Arduino GUI you can replace all the pin numbers in sketches with a "PB0, PB1, PB3 ..., you just have to compare which PIN# on the UNO is PB# on the chip you use. With this, converting scetches is done in minutes)
I don't want to add more than the describrion already does but together with the Mightycore (<-different topic) on that 1284 I only found one Ardunio library (yet) which did not run with the Mightycore, and that was a power saving library to put the ATMEGA328 to sleep. No suprise that it did not work on a 1284 ...

I already bought 2 of the board!
Ingo

Bradley | June 12, 2016

Very well done.

For DIP-40 Arduino compatible development board

Excellent product that has helped save me quite a bit of time getting some interoperability between my cache of 1284-PUs and my arduinos. I only wish that the DIP40 socket was left unattached or that a ZIF socket was used in its place (I may go back and make this very change, and will let you know what comes of it, if it was a worthwhile modification).

I'm an undergraduate electrical engineering student using this solution to bridge a gap between the ATMega 1284s that I find are standard in projects here and the versatility of the Arduino library.

Response from MCUdude | June 13, 2016

Thank you for the feedback! If you desolder the connector for the potentiometer, you'll be able to fit in a ZIF-socket in there. If you use a little force I think you may be able to fit the ZIF-socket into the socket that's already soldered to the board.

Wuping | June 10, 2016

Great

For DIP-40 Arduino compatible development board

I am happy with this product, and its technique support.Had a question the vendor was very prompt in helping and answering.

Tindie

MCUdude

Overall Rating:

Review Breakdown

Average Ratings

All Reviews

Working as a charm :) thanks!

Excellent solution for MegaCoreX + Arduino + ATmega4809

Amazing high-quality board, works out of the box

This SerialUPDI programmer is absolutely awesome!

Great little UPDI programmer

Perfect solution

Great in all perspectives

Cool and straightforward dev board

Works like a charm

excellent

worked great

awesome

A great product from a great engineer!

Very nice board, works as it should

One programmer to rule them all.

Excellent development board

Perfect little programmer

There is a lot packed into this.

Response from MCUdude | July 23, 2020

Do what it's supposed to do.

Awesome ATMega1284p development board

Response from MCUdude | Oct. 31, 2019

Great dev board with great support!

Welcome to Rockin' Overdrived Arduino Mighty arduino core !!

It works like a charm!

An amazing AVR development board!

Perfect little board for my need

Very nice platform

GREAT and QUALITY BOARD

Everything wents fine!

Great Board

Ingenious product!

Very well done.

Response from MCUdude | June 13, 2016

Great