An ultrasonic audio transmitter receiver system from Vinod S. Hi all, this is another mad project. Aim of the project is to transmit laptop audio via ultrasound to few meters and then receive it and demodulate it and playback the audio on a speaker. See the full post on his blog. Check out the video after […]
Tag Archives: Atmega32u4
Cherry MX keypad
Dan Watson documented on his blog an open source Arduino-compatible Cherry MX keypad he designed using the ATmega32U4 microcontroller: The board that I designed includes four Cherry MX keys. I used MX Blues, but it is also compatible with other types such as Brown and Red. It’s simply a matter of soldering on the ones […]
MIDI controller – Tannin 2
Shantea has a nice build log about the DIY MIDI controller he built: For second revision of Tannin controller, I decided to use PCBs crafted specifically for Tannin 2, instead of using OpenDeck reference board. This proved to be a very challenging task, as I literally had to do everything from scratch. The main premise […]
A Silverlink clone to rescue pre-USB calculators
Geekboy1011 over at the Cemetech forum has been working on a Silverlink clone software for the Arduino Leonardo (ATmega32U4) microcontroller development board: Texas Instruments’ Silverlink is a product to connect calculators without USB ports (namely everything except the TI-84 Plus series and the TI-89 Titanium) to computers’ USB ports to transfer files, screenshots, and operating systems.
Nomech mini, a 4×4 capacitive touch button grid
Kasbah posted an update on his Nomech mini project we covered we previously: So after some wrangling with the code I got the charging and discharging of the sampling capacitor working. CH1 is the slope pin which is used for discharging the sample capacitor (and then measuring the time it takes to discharge ). These […]
Nomech mini, a 4×4 capacitive touch button grid
Kasbah posted his Nomech mini project, a 4×4 projected capactive touch board using Atmega32u4 and back-fire LEDs for each button in the project log forum: It fits SoB 100x80mm but the top acrylic will sit right on top of the PCB as the dielectric properties of whatever is touching the electrodes matters a lot. If […]
SNES FLASH/ROM runs custom Super Nintendo code
dext0rb from The Electrified Fooling Machine Company has just finished work on a project which allows custom Super Nintendo code to run on an SNES FLASH/ROM. He writes, “I wanted to make and play an updated version of NBA JAM an SNES hardware, so I made this device. Load a game ROM to the device […]
ATmega32u4 breakout board+
Here’s a small breakout board for the ATmega32U4. A power supply, decoupling caps, button, USB jack, and an AVR programing header are populated on the board. As an added feature an open source bootloader that works with AVRDUDE is pre-programed. We like the AVR 8-bit family and were excited to see Atmel upgrade the series […]
Introducing the Microtouch
The Microtouch is a lightweight AVR based open source touch screen device powered by the Atmega32u4. It features a 320×240 pixel touchscreen, an accelerometer, full speed USB, a micro-SD card reader and support for a lithium ion battery. It is supported by an application framework of sorts and it is possible to run a variety […]