Hi
In the last two days I tried to get a bootloader onto my Ender 3 Pro. I run into many problems, solved many, but can't seem to succeed. I'm rather new ino electronics/programming so I followed the steps outlined in tutorials rather blindly.
The turorial I used
The one I mostly relied on was this one:
Tutorial
Which Arduino do I use
I use a WAVGATE Arduino from Aliexpress. I didn't notice it's a knock-off similar of a UNO R3. I set it up and it works now. I did the blinking sketch and I can upload the ArduinoISP sketch onto it.
How do I upload to Bootloader onto the UNO
I select the WAVGATE R3 board and the corresponding port. Upload works.
So where is the problem?
I cannot flash the bootloader onto the Ender 3 Pro. This error message shows up:
Arduino: 1.8.5 (Mac OS X), Board: "Sanguino, ATmega1284 or ATmega1284P (16 MHz)"
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x00
avrdude: Yikes! Invalid device signature.
Double check connections and try again, or use -F to override
this check.Fehler beim Brennen des Bootloaders.
Did you dissable the auto-reset?
Yes, after a while I tried that. I put in a 10uF between GND and RST (long leg to GND). The error message got shorter.
avrdude: Yikes! Invalid device signature.
Double check connections and try again, or use -F to override
this check.
How did you connect the wires?
Ender 3 (Melzi) -----> UNO clone
MISO ----------------> MISO
5V -------------------> 5V
SCK -----------------> SCK
MOSI ---------------> MOSI
GND ----------------> GND
RESET --------------> Digital Pin 10
I tripple-checked and even exchanged all wires. The blue lamp is lighting up on the ender. I attached a photo of the wireing.
What seetings were you using to burn the bootloader?
I connected the Melzi board and the UNO with an USB-Cable to my Mac. I tried the following steps with or without the 10uF cap.
In "Tools/Board" I've chose "Sanguino", selected processor "ATmega1284 or ATmega1284p (16MHz)" and appropriate com port of the Arduino clone. Next, I selected programmer option "Arduino as ISP" and clicked on "Burn Bootloader".
Any suggestions on how to proceed?
Thank you already for your help!