Avr+studio+419+hot Upd Instant

The heat pattern localizes to the AVR's VCC and GND pins – classic Ohmic heating from excessive I/O current.

Since 4.19 doesn't include its own C compiler, you need WinAVR (the GCC toolchain). avr+studio+419+hot

The built-in Simulator 2 allows developers to test code logic without "nasty short-circuited hardware smells". The heat pattern localizes to the AVR's VCC