![]() First, on the PROGRAMMER board, the UNO, add a 10uF capacitor between reset (+ side, if polarized) and GND (-). They were causing weird errors, such asĪvrdude: stk500_recv(): programmer is not respondingĪvrdude: Yikes! Invalid device signature.ĭouble check connections and try again, or use -F to override I hooked everything up as per the image and that tutorial, but upon trying to flash and being unsuccessful, I discovered two problems. I followed Sparkfun’s tutorial here to make this happen. I have a raw manufacturer-fresh ATMega168-20P chip that I need a bootloader on. Here’s how to fix errors trying to use ArduinoISP. This is going to seem silly to some of you, but I just beat my head over it for 20 unnecessary minutes, so damnit, I’m making a public note. My setup, Uno on the left, target 168-20P on the right.
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