I am using an Arduino Ethernet board for a "Internet of Things" printer and everything seemed to go fine until I tried to upload my sketch. I keep getting the message
avrdude: stk500_recv(): programmer is not responding
I've double-checked all the settings and haven't been able to change the response. I've even dismantled the printer and isolated the board from everything else.
Originally, I though I could upload the sketch by connecting my USB FTDI TTL-232 cable (TTL-232R 3.3V from my Mac to the board, which is what I know I could do with the Arduino Uno, but none of the lights went on, so I've connected the power and all I get is the power light, with the L9 light flashing only briefly when I power up. No activity in lights or the monitor when I try to upload. I've tried all the serial port options to no avail.
I'm using the latest Arduion software.