Philip Peter posted an article describing how he designed his Minimalist AVR programmer: I always like a challenge, so when I saw [simpleavr]s vusbtiny programmer, I started to wonder how small I could make an AVR programmer. All in all … Read more
Ryan Fanelli and David Hartino, students in Cornell University’s Electrical and Computer Engineering program, have written a detailed explanation of their ATmega 644 based VGA adapter. The pair developed this “homemade video card” as their final project in the program, … Read more
Kerry Wong documented his sweep generator build: In this post I will show you a simple sweep generator I built. It can be used to generate both the sweep waveform and synchronization signal needed for any function generator that has … Read more
Michael from AcidBourbon writes, “This project is about adding a MIDI output to a vintage organ, the Korg CX-3 (famous Hammond compact organ clone). My Korg was built in 1979, so before the introduction of the General Midi standard. But … Read more
Davide Gironi documented his DIY AVR Atmega dehumidifier controller board build: Suddently my dehumidifier stop working, the original humidity switch get broken, it was a mechanical hygrometer, based on a thin transparent strip that react to humidity and engage the … Read more
Umair Mukati wrote in to show off his project the ULTI-ISP USB key programmer which supports programming for AVR & 8051 microcontrollers: The ULTI-ISP can be used to program a wide range of AVR microcontrollers as well as 8051 series. … Read more
1Hz to 10MHz frequency meter using ATtiny2313: This AVR-based Frequency Meter is capable of measuring frequencies from 1Hz to 10MHz with 1 Hz resolution. The hardware of this project consists of seven 7-segment displays, AVR ATtiny2313 uController, and a few … Read more
At the recent Shmoocon conference in Washington, DC, Teddy Reed and David Anthony presented their DIY guide to using Trusted Computing on embedded devices. This is NOT an introduction or overview of Trusted Computing. We introduce a low-cost schematic using … Read more
Emanuele has informed us of a new open source project known as OpenduinoGSM. This is a standalone wireless remote control board which communicates via GSM. With OpenduinoGSM you have the option of using the Arduino development environment, so anyone, even … Read more
Zak Kemble posted his AVR based PWM fan controller build: So this is a bit of a continuation on my 555 timer based PWM controllers, but now using microcontrollers and MOSFETs instead of 555 ICs and transistors. I made 2 … Read more
If you have an old Nokia phone and want to hack it to send SMS messages, this tutorial by Alex at InsideGadgets should prove interesting. He’s produced a detailed tutorial showing the hardware and code needed to interface a Nokia … Read more
Here is an open source ATmega325 development board designed by Dilshan. The board includes a crystal oscillator circuit for the MCU, a MAX232 serial driver, hardware reset button, and breakouts for all the MCU pins. This post is about simple … Read more
Hudson from NYC Resistor was inspired by Beth’s avrfid.S project to try to build a replacement for the multiple HID Prox card he carried for work. Hudson notes that “Beth’s design is simultaneously a technical tour-de-force and an example of … Read more
Vinod S acquired some resistive touchpads and decided to interface one with a Bluetooth module so it would function as a wireless computer mouse. He explains, “I have used a cheap ATtiny13 (8 pin) microcontroller which runs at internal 9.6MHz … Read more
Bertho is working on an {Avr|Pic} Stamp development board for his local hackerspace. These USB interface boards are based on the ATmega32A and PIC18F46K22 microcontrollers. Both boards use the MCP2200 USB-to-Serial IC to interact with computers over a USB virtual … Read more
Steve takes apart an USB keyboard and mods it into an AVR programmer. All it takes is the controller board from a keyboard and an opto-coupler IC. Most keyboards have at least three indicator LEDs (Num-, Caps- and Scroll-Lock), which … Read more
As a final project in their class Mohamed and Michael developed the Virtual Archery game. It’s based on the ATmega1268p, an accelerometer, and a stretch sensor. The stretch sensor lets the game know how much force there is behind the … Read more
Here is an open source surround sound dock for Apples i-devices. It features the standard Apple connector, has two 1W speakers, and an external output for headphones. It’s uses the LA2610 analog surround sound processor and an ATTiny13 microcontroller.
What’s the fewest components you need to have a functional Arduino? Wolf Paulus gets it down to just an Atmega168 chip, power connector and LED for good measure. He describes, “This is probably the most minimal ATmega168-20PU based Arduino you … Read more
András Veres-Szentkirályi, IT security expert, OSCP, GWAPT, writes, “I’ve built a device that acts as a USB HID keyboard, enters a script as a series of keystrokes into a PC, which can extract itself into an executable. This in turn … Read more
In The Forum
Recent Comments