ATmega4809 challenger board

Name: ATmega4809 challenger board
SKU: 15636
Price: 29.00 USD
Availability: Discontinued

Latest AVR ATmega4809 board with onboard UPDI programmer and OLED with Arduino compatibility

Designed by microwavemont in Japan

Product Retired

This product is no longer available for sale.

The seller may be offering an improved version or it may be hanging out on the beach, enjoying the retired life.

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2018-12-08T12:08:52.290Z-4809_challenger_schema.png

On Dec. 15, 2025, my tindie store "micowavemont" trying restarting! Stay tuned!

Latest AVR ATmega4809 board with onboard UPDI programmer and OLED with Arduino compatibility

What is it? Latest AVR ATmega4809 board with onboard UPDI programmer and OLED with Arduino compatibility Why did you make it? I have made several board using ATmega4809, including 4809 ultra explorer…

What is it?

Latest AVR ATmega4809 board with onboard UPDI programmer and OLED with Arduino compatibility

Why did you make it?

I have made several board using ATmega4809, including 4809 ultra explorer and 4809 explorer. Basically they are working with Atmel Studio but its environment is not friendly as Arduino IDE. (Atmel studio is more powerful and straightforward way to access MCU, though.) Very recently Arduino started to sell new Arduino UNO WiFi Rev.2 using ATmega4809. The pin assignment is quite different from my previous board and just D5 and A1 can be accessed from Arduino IDE. This time I made a new board with GPIO pin assign compatible with this Arduino board.

What makes it special?

UPDI programmer is onboard. This board is all-in-one for programming ATmega4809.
Arduino IDE compatible. After setting environment, just click "upload" is enough to program this board.
I2C OLED (SSD1306 64x32 pixels) is on-board.
Lipo battery charger is on-board.

Several sample program are released on my GitHub account