Adjustable Power

Dual rail breadboard PS.

References: Mini Powersupply

Independent switches
Li-Po charging IC, probably with 5V/USB charging
Buck-boost regulators
Pass through external power
Monitoring the battery status

A breadboard has 2 power rails, it would be nice to supply different voltages to both of them, so the first version could adjust from 0-24V. To keep it small a lithium battery could be used and two adjustable buck-boost converters with two voltmeters. Max 500mA-1A current is plenty.

Version 2 could have a negative rail, or an inverting buck boost power supply, also Ammeters.

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