I’m not much of a gamer. In fact, I have never played any of the Fallout games. But when a friend asked if I could build this “Arm Mounted Computer”, I was intrigued. A quick Google search revealed that this was indeed a very popular device, and several people had already built them. This is the story of my attempt….
…The Adafruit power circuit serves four purposes:
To convert the 3.7 volts from the battery to 5v for the display.
To provide a charging circuit for the battery.
To provide a way to power the device on/off without the need for a high current switch.
To give the operator a warning when the battery is low.
That little board of theirs does all of these things.
The display pulls about 250mA at 5v, so the battery will last ~10hours on a single charge.
All I have to do is pull the EN pin low, and this will shut the booster off. Meaning any type of switch can be used to power the
Pipboy On and Off (I wound up using a switch FAR larger than I needed. This will change in the Mark 2).
There is a LB pin that will go low when the battery drops below 3.3 volts. This triggers the display to throw a “low battery” warning screen.
PowerBoost 500 Charger – Rechargeable 5V Lipo USB Boost @ 500mA+:
PowerBoost 500C is the perfect power supply for your portable project! With a built-in battery charger circuit, you’ll be able to keep your project running even while recharging the battery! This little DC/DC boost converter module can be powered by any 3.7V LiIon/LiPoly battery, and convert the battery output to 5.2V DC for running your 5V projects. (read more)
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Each Friday is PiDay here at Adafruit! Be sure to check out our posts, tutorials and new Raspberry Pi related products. Adafruit has the largest and best selection of Raspberry Pi accessories and all the code & tutorials to get you up and running in no time!