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Gen7 v1.4.1: Problem connecting to Firmware on Atmega1284P (no replies)

Hi,

I've built a Gen7 1.4.1 board, but I cannot connect to the firmware. So far I have been able to:

- Upload the SetupTest.pde, and receive communication from it.
- Upload Teacup Firmware, successfully.

However, whenever I try to communicate with the board, I receive no response. I connect to the board from Windows 7, using a USB-TLL converter. Pronterface simply tries to connect forever (with the message "connecting"). Repetier-Host can connect, but commands do nothing (and obtain no response). I tried sending commands to it with CoolTerm but no message returns any sort of response.

I have also tried loading Repetier-Firmware onto the board, and had the same issue again.

My board was built with an Atmega1284P (20MHz), using the kit of parts ordered from Traumflug. I used arduino 1.0.5.

Thank you in advance for any information or advice you can give to me.

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