I'm using ATMEGA328P implement on a miniPCB to control the Raspberry Pi Start and control LED Status. The code (that has been written on ARDUINO IDE) works fine when ATMEGA328P is plugged on Arduino UNO board, but the same code on the PCB, on the first start, the LED has an strange behaviour, switch…

RX/TX problem: ARDUINO code on ATMEGA328P

DrDiettrich October 13, 2021, 9:05am 2

So it looks like a problem with the bootloader or your PCB.

Topic		Replies	Views
Strange behaviour with rx pin on Standalone atmega328 General Electronics	4	1920	May 6, 2021
ATMega328P ->FT232RQ -> PC...crap out? 3rd Party Boards	2	1214	May 6, 2021
Communication with ATMega328P over Serial from BT Controller Networking, Protocols, and Devices	1	519	May 6, 2021
[Solucionado] ATmega328p No funciona los pines de la USART. Hardware	2	1117	May 7, 2021
Tx pin problem IDE 1.x	14	5762	May 5, 2021