Flashing Bootloader on CR-10S

Ups… there I did it. Unfortunately I tried to install the wrong hex file on the CR-10S board and it was gone. Empty LCD. No answer on boot.

To help others in fixing it faster, here the result of my research: The best hints I’ve found on https://www.instructables.com/id/Flashing-a-Bootloader-to-the-CR-10/

This is for the CR-10 and the CR-10S mainboard is a different beast: It has a different processor and the ICSP connector is at a different position.

CR-10S Mainboard with ICSP pins

I tried to follow Donovans walk through, but hat no success with his first method mentioned, but full success with the alternative method:

Her is the very fast howto:

  1. Pick up your Arduino One
  2. Get Nick Gammon’s sketches from https://github.com/nickgammon/arduino_sketches/archive/master.zip
  3. Flash the Atmega_Board_Programmer sketch on the Arduino One
  4. Connect the Arduino ICSP pins (except Reset) to the CR-10S boards (V2.1) ICSP pins. Reset on Arduino site is digital pin 10.
  5. At least you should see the CR-10S board power on. If not, you did something wrong.
  6. Go into Arduino->Tools->Serial Monitor
  7. Set Baudrate to 115200 and Communication to “Both NL and CR”
  8. If you see the menu of the Board Programmer, type G in the text box to program the bootloader. You should get a positive result in the programmer.
  9. Ready to continue business as usual with uploading firmwares.

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