What's your Pi power?

[Pepperamip]

What are the chances that something like this: DC-DC Converter Step Down Module 12V to 5V 3A 15W USB Output Power Adapter https://www.amazon.co.uk/dp/B01G8PZS..._S1xwCbD3D5NYE would work to power the Pi from a car battery?

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Nick I do exactly this from a Leisure battery. Voltage stays constant with very little variation (tested with a meter)

[Silent]

Nick I do exactly this from a Leisure battery. Voltage stays constant with very little variation (tested with a meter)

That's good news! I already have my headphone rig battery powered, I love to have the pi powered off the same one. Not sure if that's drawing too much power though?

Might need a second battery?

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[Pepperamip]

All it will do is drain the battery quicker. Unless your pi has a lot plugged into it in which case the buck converter might cause power issues. Out of interest what is the Ah of your battery?

[Silent]

All it will do is drain the battery quicker. Unless your pi has a lot plugged into it in which case the buck converter might cause power issues. Out of interest what is the Ah of your battery?

Only thing that'll be plugged into it is a HDMI to a display (has its own power) and an optical to my DAC (has its own power). Fingers crossed I can get it to work.

Honestly, I'm not sure, I bought the battery used from a scrappy for £20 lol

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[Pepperamip]

You should be fine then. Only have to solder 2 in and 2 out wires. Bare in mind the pot to set the voltage can take a number of turns before it starts to move but it will in the end, best to use a meter here.

You may have to butcher a micro usb lead as i did and if you do leave enough wire at the supply end to test for the two 5v feed wires (I think there are 4 or 5 wires in usb cable) and make a note of their colours.

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[Silent]

You should be fine then. Only have to solder 2 in and 2 out wires. Bare in mind the pot to set the voltage can take a number of turns before it starts to move but it will in the end, best to use a meter here.

You may have to butcher a micro usb lead as i did and if you do leave enough wire at the supply end to test for the two 5v feed wires (I think there are 4 or 5 wires in usb cable) and make a note of their colours.

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That sounds a little over my head in theory, I don't understand much about electricity. Had to get Tony to walk me through battery powering the headphone rig step by step lol

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