Has anyone built a megaview2? I've built a kit and and it does not work (with either a MS2 or MS3). The megasquit manual has a section on troubleshooting the megaview. I'm good on the first 16 steps. Skipping tests 17 & 18: test 19 says:
"If you have access to an oscilloscope, you can use it to check more components. With just power to the MegaView, you should see a nioce oscillation at pin 4, with a "squarish" wave form, Pin 5 should have a sine wave."
Well, I have a oscillation on pin 4, I wouldn't call it squarish. and Pin 5 is a straight 2 volts. So, I have a problem, but what is it? Pins 4 & 5 are tied to the CPU clock circuit: Two resistors, a crystal, and 2 capacitors. I'm assuming these 2 are inputs to the cpu. The resistors check good resistance wise. Is this a crystal issue? or One of the capacitors?
"If you have access to an oscilloscope, you can use it to check more components. With just power to the MegaView, you should see a nioce oscillation at pin 4, with a "squarish" wave form, Pin 5 should have a sine wave."
Well, I have a oscillation on pin 4, I wouldn't call it squarish. and Pin 5 is a straight 2 volts. So, I have a problem, but what is it? Pins 4 & 5 are tied to the CPU clock circuit: Two resistors, a crystal, and 2 capacitors. I'm assuming these 2 are inputs to the cpu. The resistors check good resistance wise. Is this a crystal issue? or One of the capacitors?