The New Arduino UNO Revision 3 has just arrived in the Maker Shed! This is a refresh of the wildly popular Arduino UNO that has been updated to allow for for additional functionality and future shield flexibility. Here are the main differences:
- The USB controller chip has been upgraded from an ATmega8u (8k of flash memory) to an ATmega16u (16k of flash memory.) This new chip should make it easier to emulate input devices like joysticks, mice, MIDI interfaces, and keyboards (this has not yet been tested and there is no code yet.)
- Analog pins 4 and 5 have been broken out next to the AREF pin to allow for I2C communication. This makes it easier for future shields to be compatible with both UNO’s and MEGA’s. Also, the power pin has been duplicated next to the RESET pin to let shields know what voltage they are running (in the case of the UNO it’s 5 volts.)
- The reset button has moved next to the USB input for easier accessibility while a shield is in place.
There are a couple other subtle changes (like the FCC certification logo on the back) but the main things, like the processor, number of pins, driver, board size, upload speed, etc, have not changed. The Arduino Revision 3 is compatible with all current shields and code.
Maker Shed kits like the Ultimate Microcontroller Pack with Arduino and the Getting Started with Arduino Kit will be shipped with the new Arduino Revision 3 starting right now!
18 thoughts on “In the Maker Shed: New Arduino UNO Revision 3”
Hmmm, I just ordered an Ultimate Microcontroller Pack with Arduino Uno last Friday. I wonder if it shipped with the rev 3 Arduino?!? I guess I’ll find out when it gets here.
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Can you make this not a sticky? It’s a bit annoying(from an arduino user).
Seconded! It makes it a pain to see if there’s anything new posted…
Sorry about this, folks. It’s just for the weekend. We hardly ever do sticky posts and want to work to find a way to feature special new releases in the Shed that we want to keep “alive” for awhile in the least invasive way possible. We know this method is not ideal.
I knew I should have waited a few days before ordering mine. :)
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