Interfacing a Retro Controller using the USBASP

An ISP dongle is a very common piece of equipment on a maker’s bench. However, its potential as a hackable device is generally overlooked. The USBASP has an ATmeg8L at its heart and [Robson] decided that this humble USB device could be used as an interface between his PC and a SNES Joypad.

A SNES controller required three pins to communicate with a host: clock, data and latch. In his hack, [Robson]  connects the controller to the ISP interface using a small DIY adaptor and programs the AVR using the V-USB library. V-USB is a software USB library for small …read more

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Hackaday Prize Entry: A Very Small Password Keeper

One of the more popular security builds in recent memory is USB password vaults. These small thumb drive-sized devices hold all the passwords you have to deal with, and are locked behind a authentication code on the drive itself. For their Hackaday Prize entry, [Miguel] and [Noel] asked how inexpensively one of these devices could be made. The answer, coming in the form of their Memtype project, is very inexpensively.

The Memtype project is based on the cheapest and most simplistic USB implementation on the planet. It’s built around an ATtiny85 and V-USB‘s software only implementation of a USB keyboard, …read more

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Dirt-Cheap USB Arduino Hack From the Past

Mass production is a wonderful thing. Prices fall, and hobby hackers get cheap gear. The mind then wanders towards what can be done with it. So it’s little wonder that someone like [Aaron Christophel] would try to repurpose those sub-$3 AVR programmers that are all over eBay (translated poorly out of German here, but demonstrated in the video embedded below).

[Aaron] didn’t have to do much, really. The only trick is that you’ll first need to re-flash the existing ISP firmware with one that lets you upload code to the device itself over USB. If you don’t have an Arduino …read more

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