Portable VCR Raspberry Pi

MisterM wrote this instructable detailing his 1981 portable VCR Raspberry PI media centre: This is an early ’80s Sharp VC-2300H portable VCR that I’ve converted – it now has a Raspberry Pi at its heart, running the excellent Raspbmc media centre software. Other upgrades include a snazzy arduino-based clock and an EL wire “tape” that ejects […]

$2 DIY compost thermometer build

afraser-kruck wrote this instructable detailing his DIY compost thermometer build: Here are some basic instructions on how to build a $2 compost thermometer using readily available supplies. It looks crappy (in a good rustic kind of way), but works great and uses few materials. You really don’t need to read this… I like this design because it’s […]

Go analog with a resistance-based calculator

tanishqjain340 wrote this instructable detailing the build of his analog calculator project: Do simple calculations with your math box. The next time you need to crunch a couple of numbers, resist the urge to grab a digital calculator. Instead, round up some variable resistors, also known as potentiometers, and wire them into an analog mathematics rig. By twisting […]

Solar tracking device using MSP430

vigneshraja wrote this Instructable detailing his solar tracking device using MSP430: Hi everyone.here i am showing my solar tracking project for solar panel. The two LDRs are connected to both edges of the solar panel.so it can able to follow sun direction from east side sunrise to until west side sun set. this project find more […]

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.

Simple LED driver/constant-current source 20 mA

Another Instructable by Jan Henrik,  a constant-current source which gives 20mA at the output.  He writes: It is a circuit, which limits the current to 20mA, what allows us to drive any normal led, without calculating a resistor, you can just plug the led in and see it emitting light… Also this allows us to test […]

Interactive LED beer pong table

Jeff wrote this Instructable detailing the build of his LED beer pong table project: This instructable will guide you through all of the steps to in order to create a one-of-a-kind beer pong table complete with cup detecting RGB pods, automatic ball washers, a 32×12 ping pong ball LED grid, side LED rings for spectators and an RF interface […]

PWM generator and servo tester with ATtiny45

Jan Henrik wrote this Instructable detailing the build of his PWM generator and servo tester with ATtiny45: This PWM generator also works as servotester, it supports all kinds of servos, which dont need more then 5V Features: Operating voltage: 5V Max PWM current: 1 A PWM frequency (by now) : 500HZ , I am trying to make that changeable, […]

Hacking a 3D printer into a tattoo machine

Here’s a cool instructable for a 3D printer tattoo machine: In october 2013, a famous design school in Paris, ENSCI les Ateliers, hosted a workshop organised by the French Ministry of culture. The idea was to use images, videos and sound fallen in the national pubic domain and use them in a sort of “Mashup”. The event […]

PCBs made using a laser cutter

Joebell wrote this Instructable detailing the process of making a double-sided PCBs with a laser cutter: With a little practice, you can make excellent double-sided PCBs by combining a laser cutter with chemical etching. The basic idea is: the laser cutter blasts away spray painted etch resist, then chemicals eat away the exposed copper. Once the copper […]

Digital/Analog clock – Arduino + PaperCraft

alstroemeria wrote this Instructable detailing the build of his Digital/Analog clock: In this instructable we will be recreating a clock inspired by Alvin Aronson’s original design. When I first saw this clock I was very impressed by how clean an elegant the design was I immediately wanted to recreate this effect. I hope some of you […]

Polyimide (Kapton) PCB solder paste stencil

cmiyc wrote this Instructable: Polyimide (Kapton) PCB solder paste stencil Creating a solder paste stencil for a toaster reflow oven or hot plate is simple when you have access to a laser cutter.  I used the Laser Cutter at my local TechShop to create this and other PCB stencils. This Instructable assumes you have created a PCB […]

Becks beer bottle with an audio recording scratched on it

Here’s an Instructable by GYRO:  Becks beer bottle with an audio recording scratched on it We ground a high-speed steel cutting tool which we polished to mirror finish resulting in a very quiet cut, all this taking place under a microscope! We also have a couple of sapphire tips which we used for some test […]

Geo Data Logger: Arduino+GPS+SD+Accelerometer to log, time-stamp, and geo-tag sensor data

This Instructable  describes a prototype of a road condition scanner using Arduino + GPS + SD + Accelerometer designed by TechBitar: I thought it would be educational to build a prototype that I can take on the road to log, geo-tag, and time-stamp sensors data to be analyzed later with mapping and data analyses applications.  […]

GOduino III – the breadboard-friendly Arduino-based robot controller

Techbitar wrote this Instructable detailing the build of his GOduino III – the breadboard-friendly Arduino-based robot controller. We previously covered the GOduino II. The GOduino III is based on the ATmega328p microcontroller and the L293D dual h-bridge. It’s built with DIP ICs and through-hole components for ease of assembly and repair.  This robot controller can handle […]

Reflow soldering toaster oven

Frank wrote an instructable about a solder reflow oven made from a toaster: As I get more serious into my electronics hobby, I need to work with more SMD components. Some component packages are very difficult or impossible to solder with a traditional soldering iron. To solve this problem, I decided to hack a toaster […]