I can't believe I did this, but I put a one-wire port on pin 0 and another on pin 1 (Nano with 328). RX and TX are now doing their one-wire handshakes and the USB port can't reset the Nano into the bootloader. One-wire is talking to DS18B20 temperature sensors. I disconnected the sensors, hoping tha…

Nano serial port busy, can't upload new software--Solved

Topic		Replies	Views
Arduino Nano communication problem IDE 1.x	7	3385	May 5, 2021
Nano - Only upload once IDE 1.x	10	3177	May 5, 2021
I work fine with Arduino Uno, but no Upload with Nano Uploading	4	943	May 6, 2021
Serial port already in use. USB communication blocked with 1 of my 2 Nanos IDE 1.x	2	1083	May 5, 2021
[Solved ] 'Serial Port COMX already in Use'. Experts? IDE 1.x	7	8906	May 5, 2021