Pup05 shared his SmartMatrix project in the forum. He writes: The panel fits perfectly, just had to shim it with a little bit of folded card stock on each side. There’s plenty of room for the Teensy and SmartMatrix board, wiring, SD card, etc. I cut out a piece of white printer paper to size, and placed […]
Tag Archives: DIY
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 […]
Constant Current Electronic load
Juan of ssihla build this DIY electronic load. He writes: The design is based on some of the various diy electronics loads out there (like the one from Dave Jones). The mosfet is a P45N03LT , most likely I took it from some of the PC power supply I’ve “recycled”. I’m using two 25k potentiometers, one for […]
Arduino based waveform generator
Hemal Chevli made this Arduino based waveform generator. He wrote a post on his blog detailing its assembly: Finally, after sitting in the TODO list for a long time, I’ve made a basic wavefrom generator based on arduino, made using this instructable as reference. I had an enclosure laying around which has incorrect dimensions for […]
Hakko T12 soldering controller
Diogoc shared his Hakko T12 soldering controller in the project log forum: I finally finished my Hakko T12 soldering controller. Thanks to sparkybg and arhi for all help and sugestions. Some features of the controller: – 3310 graphic display – rotary encoder for easy and fast temperature selection – sleep mode when the iron is in the […]
Wireless controlled robotic hand
Gabry295 wrote this Instructable detailing the build of his wireless controlled robotic hand: It consists in an artificial hand controlled by a glove with flex sensors. The artificial hand reproduces the movements of the hand with the control glove. The hand and the glove works both with Arduino. Check out the video after the break.
DIY prototyping board with 3.3V, 5V, 12V and -12V built in power supplies
Electro Labs’ new project the DIY prototyping board with 3.3V, 5V, 12V and -12V built in power supplies: This DIY Prototyping Board is designed to provide all the most used supply voltages that a designer will need during prototyping a circuit. The switching power supplies on the board output 3.3V, 5V, 12V and -12V rated at […]
Bubble display alarm clock
Markus Gritsch build another bedside table alarm clock, the schematic and source code is available here: recently some vintage bubble displays popped up at various places [1][2], so I felt the urge to build another bedside table alarm clock, this time a really tiny one, roughly the size of an AAA battery. Check out the video […]
DIY acrylic skeleton clock
Benmurton posted a step by step guide of his DIY acrylic skeleton clock build: This is a clock made fully out of acrylic! This was originally was my year 13 mechanical engineering college project, we had to research, design and build a project for a stakeholder, this including lots of recording so there is no shortage of photos. […]
DIY 100W LED flashlight
In this video Julian Ilett demonstrates his DIY 100W LED flashlight: I discovered that due to a lucky co-incidence of voltage and internal resistance, a 100W LED can be connected directly across the terminals of two 18V Nickel Cadmium power tool batteries. And that means you can build a 100 Watt (7,500 Lumens) flashlight for less […]
Power bar, a small breadboard power supply
NsN has been working on a power bar, a small breadboard power supply: The power bar is a small breadboard friendly power supply with three independent voltage regulators and built-in current monitoring. The target applications are small, mostly digital projects, which don’t need a large 0-30V, 6A benchtop power supply, but at the same time want […]
Infrared Receivers – signal lag and distortion
The crew from AnalysIR writes: Many electronics enthusiasts will be familiar with how Infrared receivers demodulate IR signals. In this post we show a visualisation of the time lag and distortion of the signals as they pass through the IR receiver for demodulation and noise filtering. Most DIY projects use the raw timings from the […]
Piezoelectric crystal speaker build
This video by RimstarOrg demonstrates how to build a Piezoelectric crystal speaker: I make a loud speaker for a clock radio using a piezoelectric crystal. Actually I experiment with a variety of piezo crystals. That includes a piezoelectric igniter crystal from a BBQ lighter and a homemade/DIY rochelle salt piezoelectric crystal. I also try out a piezo buzzer from […]
Simple DIY JBC soldering station
jry shared his simple DIY JBC soldering station in the project log forum: Current status: transformer inside old PSU housing as temporary solution. I don’t want to mess with mains on my desk. For now battery powered (3.2V LiFePO4) logic part. Opamp, Atmega328p, three buttons, LCD (waiting for b&w OLED instead of this one for […]
RF remote control
Michał posted his DIY USB Infrared Toy: I’ve redesigned IR Toy’s v2 board a bit and managed to build it on my own and it works perfectly! I have decoded my Medion’s radio remote control codes via the WinLIRC Via the forum. You can get IR Toy v2 for $22.05, including world wide shipping.
Color wordclock project
EverLost shared his color wordclock in the project log forum: Display: It is now 2:45pm (Simulated, the RTC part is still WIP…) I am always fascinated with exotic clocks. You may have came across a DIY word clock before (if not, google it). This is my own flavor of word clock. Color, Traditional Chinese character, with a […]
Remote flower watering project
Lucy Matchett, Nicole Yi Messier, and Joselyn McDonald (Snax_and_Macs) made a remote flower-watering device so you can water your loved ones’ plants when you water your own. We used Arduinos, a photoresistor, a servo, Arduino and Processing sketches, Spacebrew, and a little elbow grease to put it all together. Via Hacked Gadgets.
Arduino plant mister
In this video Johnny Klaus demonstrates using a car door lock motor and an Arduino to mist his plants: A little project I’m working on. Using a car door lock motor and arduino with relay because it will be misting the plant every hour or so, and the 12v transformer doesn’t have to be constantly on. Via […]
Self balancing robot
In this video Trandi demonstrates his little self-balancing robot project: It’s really been a very long time since I added this on my todo list, and in the past couple of week-ends I finally found the time to do it. And for once, I managed to avoid over-designing it, and produce something that actually works and is fun […]
Alarm clock using an OLED
Markus Gritsch writes: Inspired by this and this wrist watch, I decided to build yet another iteration of my bedside table alarm clock, this time using an OLED. As a first step I made a handy breakout board for an 1.3″ 128×64 OLED. The rest is soldered together on a perfboard. The hardware is complete and […]