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I am attempting to create a portable Raspberry Pi. I am wondering how I would go about running the RPi and the LCD screen from the same battery. The screen draws about 6.5V. I have a 5V voltage regulator. Where would the best place be to attach the power supply? Would it be possible to have it powered through the micro USB slot? Thanks in advance.

  • When you say draws 6.5V do you mean the screen needs a 6.5V power supply? It seems an odd working voltage. Have you a link to the screen specs? You could use a couple of buck converters to convert the LiPo to suitable screen and Pi voltages. e.g. ebay.co.uk/itm/351020297464 – joan Jul 7 '14 at 12:18
  • I mean it drops out about 6.5V. This is where I bought the screen. I think that has all the specs. I'll look into the buck converters – Ross Hudson Jul 7 '14 at 16:05
  • Those reversing screens normally work from the car's 12V system. Are you saying it will work direct from the Li Po. If so you just need a converter to provide 5V to the Pi from the Li Po. I have a similar set-up. A 12V laptop PSU powering a screen directly and also fed into a 5V UBEC which powers the Pi (via the P1 5V and ground pins). The UBEC is similar in price but does not need calibrating (adjusting the output voltage by turning a screw). It takes something like 5.5V-26V as an input and provides a 5V output. – joan Jul 7 '14 at 17:10

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