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Adds note about common error message received when trying to flash to… #433

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11 changes: 11 additions & 0 deletions content/docs/reference/microcontrollers/arduino.md
Original file line number Diff line number Diff line change
Expand Up @@ -58,6 +58,17 @@ The Arduino Uno needs a few extra dependencies to work, for example, if you get

To fix this, see the installation guide for [Linux](../../../../getting-started/install/linux/#avr-eg-arduino-uno-2) and for [macOS](../../../../getting-started/install/macos/#avr-eg-arduino-uno-2).

### Arduino Uno R4 Support
Currently Arduino Uno R4's are not yet supported. See [this PR](https://github.com/tinygo-org/tinygo/pull/4265) for more details.
If you're receiving error messages like this
```
Error: programmer is not responding
Warning: attempt 1 of 10: not in sync: resp=0x00
```
when attempting to run
```tinygo flash -target=arduino -port=COM5```
this is likely the cause.

## Flashing

### AVRDude
Expand Down