Tagged: avr attiny

Easy hack to allow an AVR Dragon to power the target device over the ISP cable

TL;DR: You can power a target device from an AVR Dragon over an ISP header by adding a jumper wire from the VCC pin to pin #2 on the header that you are *not* using.

I’ve been a big fan of the SparkFun Pocket AVR programmer, partly because it has a handy little switch that lets you send power to the target device…

Pocket AVR Switch

Unfortunately, I started getting “Error: Could not find USBtiny device” while programming boards using a jig

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Battery Fuel Gauge with Zero Parts and Zero Pins on AVR

Blink LED Cropped

It can be nice to know how much battery power you have. It becomes critically important with LiPo batteries since you can permanently damage them by running the voltage down too low. Typically battery voltage detection requires adding a circuit with extra parts and their associated power requirements. Wouldn’t it be great to be able to do this using nothing but software? Read on for a no parts, no pins, no power solution…

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