But it's not working
When I attempt to upload the Blink sketch (I'm using the FTDI USB cable) I get the following error:
avrdude: stk500_recv(): programmer is not responding
I've double checked all the soldered joints and all look sound. I wondered if the flashing red LED might indicate an obvious issue? Or have I fried the capacitor when I unsoldered it? Or maybe I have a faulty FTDI cable although given the red LED blinking on 9v power I don't think that's an issue.



