Raspberry Pi power requirements
posted 2 years, 4 months ago by Alex JV

Raspberry Pi also runs on 5V. So initially we collected it to the supply 5V rail that we created for L293d from the Lipo battery. Raspberry Pi model B requires around 700mA to 1000mA for itself. When we connected the Pi to the Lipo-l293d rail, the 7805 overheated. 7805 is a very lossy device. The drops voltage by burning the rest of the power. So with so much of current drawn and a half of the power wasted at the 7805 the lipo battery lasted less than 5 mins.