Turns out I can read 3V3 from P1 and P6 (ground) fine ..
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| No GPIO ribbon = 3V3 |
But when I connect my GPIO ribbon cable the voltage dropped to 1V6 stopping even my LEDs working with the 220R resistors I was using. OK so my understanding here may not be fantastic but checking resistance across the M-M wires is only 0.4 Ohms. Measuring again across GPIO ribbon using 2 leads remains at 0.4 Ohms.
Time to get some basic Female to Male leads and be done with it... any ideas as to why the GPIO ribbon is behind the voltage drop?
