ATtiny84 USBtiny AVR ISP programmer

Rupert Hirst writes: My through hole, home etch friendly version of the surface mount FabISP, which is based around the USBtinyISP AVR ISP Programmer. The new USBtinyISP drivers also support for Windows 8 This design uses the ATtiny84 microcontroller instead of the larger ATtiny2313 of the USBtiny. Project design flies can be found on RunawayBrainz […]

Hand powered USB charger from hacked IKEA flashlight

Werner sends this handy hack he found at IKEAHackers. Giovanni Gentile devised this simple hack which mods an IKEA Ljusa hand powered flashlight into a USB charger. “The procedure was simple, it was enough to eliminate some resistors and use a capacitor sufficient to handle the charge given by the Ljusa’s dynamo. I set the […]

GPIBUSB Adapter update

Another update on Scasagrande’s project, GPIBUSB Adapter rev4: After working closely with a few individuals it was discovered that some of the pre-existing GPIB software (such as KE5FX’s tools) has some hardcoded serial port settings, one of which being the use of hardware flow control. After getting builds of the software tools with these disabled, some […]

Linux security tip: moving your /boot partition to removable media

Today threats to your data can come from many quadrants. It’s not enough to protect against malicious online attacks; there’s the very real threat of government confiscating and examining the electronic devices carried by international travelers, and even planting spyware. In this post from “The Doctor”, we’re shown one way to mitigate this threat, which […]

USB to Serial converter using AVR microcontroller

Yet another great project by Dr. Ayman Shalaby of Electronics Lab, a USB to Serial converter using an ATMEL AVR microcontroller: This project is a USB to Serial converter using an ATMEL AVR microcontroller. There are two version of the converter, one with SMD parts and another with TH parts. The mcu used is an ATmega8 and […]

LemcUSB: software USB for EFM32ZG (ARM Cortex M0+)

Viswa informs us that the crew have implemented a purely software based USB peripheral for ARM Cortex M0+ devices and a made a tiny Quick start board for EFM32ZG110 MCU. “This software enables Cortex M0+ devices to act as a Low speed USB device. It includes a lightweight USB & HID Stack and can […]

Arduino + NES controller = USB keyboard

Grouflon has written up a unique project using an Arduino and an NES controller. “This week I worked on little script/manipulation that turns an Arduino and a NES controller into a USB Keyboard. Maybe it can be of use to some of you, so feel free to grab the code on this github repo. This […]

µ-Wire: USB on ATtiny10 controlling a WS2812 LED

cpldcpu writes: I tried to push the ATtiny10 to its limits and succeeded – I implemented a seriously gutted version of V-USB on an SOT23 ATtiny10 with just 1kb flash and 32b of RAM. It implements a subset of the little-wire protocol to control a single WS2812 LED. I am currently also working on size […]

Open hardware USB to RS485 adapter

Ethan Zonca of Protofusion writes: While developing the Luma RS485-networked LED driver we discovered a need for a small and inexpensive USB to RS485 adapter. We designed an adapter with a FTDI basic UART chip (FT230XS) and an inexpensive TI differential receiver (SN75176). Our small selection of parts brings the cost down to just over […]

Video: Multiplexed Wired Attack Surfaces

In this presentation from the recent Toorcon 15 in San Diego, CA, Michael Ossmann and Kyle Osborn detail their efforts in hacking cellphones via multiplexed USB signals. Manufacturers of mobile devices often multiplex several wired interfaces onto a single connector. Some of these interfaces, probably intended for test and development, are still enabled when the […]

Blackhat Euro: cheap open source USB drive write blocker

At last year’s Blackhat Europe con, Philip A. Polstra, Sr. from the University of Dubuque gave a presentation detailing how to protect your USB security drive toolkit from auto erasure by the target machine. He describes the design of an open source USB flash drive write blocker based on the FTDI VNC2 MCU. His presentation […]

HID-class USB Serial communication for AVRs using V-USB

This video by Ray Wang demonstrates HID-class USB serial communication for AVRs using the V-USB library: Serial communication is helpful for debugging and checking sensor values, and HID-class means it can work on all operating systems without driver installation. This is useful for many software-only USB projects such as based on ATmega328 or ATtiny45/85. To receive and send messages between the […]

USB random number generator

Dilshan Jayakody has written an article detailing his open hardware project the USB random number generator: This project is about USB port base true hardware random number generator and it is design around the avalanche noise which occurred in reversed biased P-N junction. This random number generator is design using commonly available electronic components. The core component […]

M-Stack open source USB stack for PIC microcontrollers

Here is an open source USB stack for PIC microcontrollers and DSPs. It features a dual LGPL and Apache licenses making it suitable for commercial open source projects. So far it only supports the HID device class. A USB device stack is the software necessary to drive the USB device peripheral hardware on a microcontroller […]

MSP430F5529 USB LaunchPad evaluation kit

TI has announced their latest LaunchPad evaluation kit. The new MSP430F5529 USB LaunchPad Evaluation Kit includes USB 2.0-enabled MSP430F5529 16-bit MCU (up to 25 MHz), 128KB Flash, 8KB RAM and a 12 Bit SAR ADC. Also included are eZ-FET lite (the open source onboard debugger with application UART) and the standard 40 pin LaunchPad connector […]

AVR: Attiny 2313 V-USB media volume control

Rupert Hirst has written a detailed article on his AVR V-USB media volume control: My most rewarding projects are the ones which i actually use. I like my audio gear so, this was the perfect companion project! On my desk i have a headphone amplifier for my AKG K702’s headphones, below it i have my self built […]