ADC MCP3008 problem - Raspberry Pi Forums

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i trying display value 10k trim pot using mcp3008 , adafruit's adc tutorial. when run code , pot turned way 0v (it goes 0v 3.3v on multimeter supposed to), value around 200. varies 25 or down. turn pot readable voltage on multimeter, value shoots 1023 , stays there no matter how far turn it. can tell me why happening? have been trying google solution hard problem explain. thank you

some links useful. not want google find specs , such like.


raspberrypi



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