Beginners • Re: Need A Reliable Way To Deliver 10m Power For Raspberry Pi Zero 2W And MG90 Servo Without Voltage Drop

These
https://www.ebay.co.uk/itm/306563286549
(or the micro-USB version depending on what Pi you have)

and some much thicker cable.

That won't help. It's exactly equivalent to what OP has, which isn't working.

Of course it will. If he uses 30A mains cable the voltage drop in the cable becomes 7.4 milliOhms per meter, so the total voltage drop will be
V = I × R ≈ 1.5 A × 74mΩ x 2 ≈ 0.24 V lost

A large capacitor on the terminals at the far end will also help handle surges.

Statistics: Posted by MikeDB — Mon Nov 17, 2025 9:14 am

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