Hello,
I'm building a mendel with Gen 3 electronics. I'm presently working on programming the motherboard. I'm doing as few mods to the boards as possible as they were pre-built by MakerBot. The only soldering mods I've done have been to add two 2-pin headers to the SDA&SCL lines to connect the motherboard to the extruder board; and to add one 2-pin header to allow for the programming jumper (headers are shown here at A and B: [
reprap.org]).
I am following these directions on how to program it: [
reprap.org]. The only difference is that I am using a USB:TTL 5V cable which was prefabbed, and I am using an ATX power supply to power the board instead of the custom mendel USB<->serial cable.
There does not appear to be any power to my board, as the ATX supply fan is not turning on, neither is the power LED on the motherboard.
This is what I have done:
- Install a jumper on the programming header. Select tools->board->sanguino in arduino.exe and compile.
- Plug the TTL end of the USB:TTL cable into the motherboard
- In arduino.exe select tools->serial ports and check what is available.
- Plug the USB end into the computer. When plugged into the computer, Windows detected the USB device and "installed drivers". No lights on the board at all.
- In arduino.exe select tools->serial ports and select the new device (for us, COM3).
- The Power LED (labelled power, next to the TTL connection) did not turn on on our board as expected.
- Plugged in an ATX supply, debug light flickered three times fast, pause, two times fast, off. Cycled power; no lights. Nothing on the board is warm so I dont think anything is fried. There is the correct voltage from the ATX power supply when not connected to the RepRap. When the reset button on the motherboard is pressed, the debug light again flashes the same pattern. The ATX supply fan does not turn on at all. Same behavior with or without the jumper installed next to the TTL connection. No lights on the board when the ATX supply is connected before the serial cable.
- Select upload. It will say "Uploading to board...". For us, it then had an error:
Problem uploading to board.
Binary sketch size: 22514 bytes (of a 63488 byte maximum)
avrdude: stk500_getsync(): not in sync: resp=0x48
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x48
When no ATX supply is connected, the error is as follows:
avrdude: stk500_getsync(): not in sync: resp=0x00
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51
Any thoughts would be great!
Cheers,
Chris