Hi I have a bunch of home made nodes that user a 328p at the core (with rfm12b and a temp sensor). I am able to burn the bootloader over SPI with no problem. and serial comms are fine too. In each case I am using an Uno as the interface (for uart I remove the 328p chip from the Uno). The bootload…

Flashing sketch over serial port to a bare 328p.

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