[Solved] MCP3002 returns 0.0 everytime - Raspberry Pi Forums

hi,

have raspberry pi 0 , want power battery. works, want check voltage of battery, in order know when have recharge it.

that, tried use mcp3002 , mcp3002() class in gpiozero. problem retrieved value 0. everytime. , don't understand why.

below circuit. it's pretty simple: battery provides 5v created voltage divider, , read voltage via channel 0.

battery.jpg (61.74 kib) viewed 1311 times

wrote simple program read value:

code: select all

from gpiozero import mcp3002  mcp = mcp3002() print mcp.value

it's classic circuit, saw on several places, and, if i'm not wrong, have same. that's why don't understand why 0… idea?

that circuit 26 pin expansion header. pi 0 has 40 pin expansion header. perhaps have not connected correct pins? photo may help.

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