Dilshan Jayakody writes: This article introduces high quality digitally controlled 2.1 channel analog audio power amplifier system. This project is mainly based on TDA7377 AF power amplifier and PIC18F452 8bit microcontroller. Basic features of this receiver are 2 × 6W + 20W audio output power, ±14dB bass and treble controls, fully configurable +35dB bass booster […]
Category Archives: open source
Data logger handles four thermocouples
Charles Edward Pax has announced that the T400 temperature datalogger is now being offered on Kickstarter! The Pax Instruments T400 datalogger is an open source four-channel thermocouple temperature datalogger based on the Arduino™ Leonardo platform. It is ready to use out of the box with the features you want most. Measurements can be logged to […]
Video: JTAGulator introduction and demonstration
Hardware hacking guru Joe Grand of GrandIdeastudio has posted this new, detailed introduction/demonstration of the JTAGulator, an open source hardware tool te hat assists in identifying on-chip debug (OCD) and/or programming connections from test points, vias, or component pads on a target device. (We note the Bus Pirate usage at 5:40.)
Energia vE0013 release adds low power, CC3200 WiFi LP and CC3100 BP support
The Energia team announces the availability of version vE0013. We wrote about it previously: A new version of Energia has been released. Energia is an open-source electronics prototyping platform started by Robert Wessels in January of 2012 with the goal to bring the Wiring and Arduino framework to the Texas Instruments MSP430 based LaunchPad. It […]
Tutorial: GNU Radio with the HackRF SDR
Michael Ossmann, one of the developers of the amazing and affordable HackRF SDR transceiver, is releasing a tutorial series on using GNU Radio. “This ongoing video series will be a complete course in Software Defined Radio (SDR). In this course, you’ll build flexible SDR applications using GNU Radio through exercises that will help you learn […]
OpenHardwareExG: An open source platform for ECG, EEG, EMG, ENG, and EOG signal processing
OpenHardwareExG, An open source platform for ECG, EEG, EMG, ENG, and EOG signal processing: The OpenHardwareExG is a platform for ECG, EEG, EMG, ENG, EOG, and evoked potential applications. The OpenHardwareExG platform was originally developed as part of the eeg-mouse project. Project goals The main goal of the project is to build a device that […]
DEFCON 22 badge source code
Parallax has released the zip file containing the SPIN source code for the Parallax Propeller based DEFCON 22 badge. As noted in a previous post, the links to the schematics are also available on the Parallax website.
Tutorials: GNU Radio for beginners
GNURadio.org has been revamping their website, updating information on the latest release. As part of this process Marcus has posted a new seven part tutorial series on GNU Radio. “Our task is to build a beginner-level tutorial, which will then live on the static part of the web site. Someone put it as an “online […]
Open source Android thermostat project
Android Thermostat, an open source DIY home thermostat project based on Android: Android Thermostat is an open source thermostat project ideal for programmers and electronics hobbyists. As the name suggests the application runs on Android phone that is connected to some basic electronic components for controlling your home HVAC system.It costs around $140 to build […]
The Protoptimus open source CNC Machine
An open source Arduino-based CNC machine from Brazil. Jeferson, the Protoptimus founder, writes: It’s time for Brazil to show its strength in the maker movement” My name is Jeferson, the Protoptimus founder. I’m on a Catarse.me campaing, the largest Brazilian crowdfunding website, and I need your help. We yearn to be the first big manufacturer of low […]
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 […]
blueShift – An OpenXC LED tachometer
In this video Pete Mills demonstrates his blueShift project, an OpenXC LED tachometer he is working on: An Arduino, some addressable LED’s, a bluetooth module, code and a 3D printer come together to make blueShift – An OpenXC LED Tachometer. blueShift is so named for the Bluetooth protocol used for data communication, and the use of […]
OpenBuilds Open Source Embroidery machine
sausagePaws over at OpenBuilds shared his open source embroidery machine project: A simple Embroidery machine using an XY belt and pinion drive to drive a hoop under a standard sewing machine. Needle timing, machine power and stepper control are all provided by a PIC processor. A tablet provides the higher level formatting required for communicating with […]
Analysing 433 Mhz transmitters with RTL-SDR
Yashin has posted this tutorial at ArcanumX demonstrating how to read and decode 433 MHz digital data transmissions. “I intend to demonstrate how the RTL-SDR can be used to sniff 433 Mhz transmitters. These are pretty cheap and can be found in a lot of appliances including alarm sensors. This post is also intended to […]
minDUINO v1.5, a small footprint, educational Arduino clone
Steve Smith G0TDJ of ProjectAVR writes: The minDUINO is designed to be easy to assemble, so it is a two layer through-hole design, not SMD. It has headers for FTDI, ISCP and port breakouts. Another project I designed was VAYU-NTX, a High Altitude Balloon Tracker. As expansion for this, I designed two small daughter boards for […]
Digital audio amplifier with PLL synthesized FM radio
Another open source hardware project by Dilshan Jayakody the digital audio amplifier with PLL synthesized FM radio: This is high quality stereo digital audio amplifier with PLL synthesized FM radio receiver. Some of the high level specifications of this receiver are listed in below: Audio output power: 4W + 4W (with 8ohm speakers) Input sources: FM and 3 […]
Build an Arduino based sonic pest repeller
Just in time for Summer, here’s a design for a sonic pest repeller. Carla Schroder developed this project which uses an Arduino Uno along with the WAVE shield and a Maxbotix ultrasonic rangefinder. This simple yet reportedly effective design senses critters nearing your garden plot and plays sound files (stored on an SD card) intended […]
Poor maker’s IR receiver #2
As promised, the AnalysIR crew has released their design for a simple IR receiver, this time using the Arduino. Our recent post about the silver bullet IR receiver proved very popular and we promised that we would follow-up with another variant of the poor maker’s Infrared receiver. This time we are using an IR LED […]
Open source PCB ruler v1.0
An open source PCB ruler by Hemal Chevli, that is available at Github: PCB ruler with different foot prints ,SMD proto-typing area, tables, various AWG size holes and inches and cm scale.
Re:Load Pro – A DC active load
Here’s an interesting open source project on Kickstarter the Re:Load Pro by Nick Johnson of Arachnid Labs: Today I’m finally launching the Re:load Pro on kickstarter. The Re:load Pro takes all the advantages of the original Re:load, and improves upon them with a robust benchtop case, a good quality display and UI, an isolated USB interface, and an […]