The device measures voltage and current and displays them, along with the calculated power, on the small 0.5″ OLED display. The circuit is built around an ATmega328. To keep the board size small ...

In sleep mode, it consumes less than 30µA. The 32×64 OLED display and the custom-made circuit was assembled and tightly fitted into the original case. The power bank now gives readings of the ...

There’s a warning here, though, which is that Valve says the white Steam Deck OLED is a limited edition device, and it doesn’t look like more are coming after the first run. “This is a ...