It would be nice to use a more robust programmer for a job like this. My jig exacerbated the problem because it is designed so your fingers touch the grounded top surface before each insertion. ![]() It seems like the problem goes away when I wear a grounded bracelet, so I think the Pocket Programmer is sensitive to static discharge on the ground pin. This was a big hassle and increased the average cycle time from 3 seconds to 10+ seconds. The programmer would randomly disconnect from the computer, and I had to unplug and replug the USB cable each time to get it back online. Unfortunately, I started getting “Error: Could not find USBtiny device” while programming boards using a jig… I’ve been a big fan of the SparkFun Pocket AVR programmer, partly because it has a handy little switch that lets you send power to the target device… TL DR: You can power a target device from an AVR Dragon over an ISP header by adding a jumper wire from the VCC pin to pin #2 on the header that you are *not* using.
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