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ID Verified Lifetime subscriber
richms:
If there is 5.1v at that end of it and that low current then its not the buck converters fault. Try another cable and see how you get on.
Here is the current setup.
DC-DC Buck convert --> Charger Doctor --> USB A to Micro USB --> Raspberry Pi 3
jimbob79:
jimbob79:
Actually, Something is a bit bizarre. The RPI3 is not showing the 'under voltage' icon in the top right hand corner? I did do an update last night but did not notice any change and i checked for and loose connections?? The charge doctor is also now showing a smooth 0.70Amps
Checkout my video I took last night showing the 'under voltage' icon in action.
Spoke too soon. Once the pi started to warm up a bit the 'under voltage' icon kicked it. Doh.
Hopefully I think I've cracked it. I was taking a closer look at the 'USB A to Micro USB' adapter and I noticed that the length of the micro USB connector was just less the 1 mm shorter than the original supplied micro USB power supply. So I just trimmed off a small amount of plastic from the 'USB A to Micro USB' adapter to the the connector slightly longer. Hey presto, it clipped into the micro USB power input socket a lot better since it was now not butting up to the side of the clear acrylic case. Booted the RPI3 and it now seem to be functioning correctly with no 'under voltage' icon.
So it must of been an connection issue and not having a descent surface contact on the micro USB connector.
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