This DIY sous vide cooker was made by my friend Markus. He built it for about 1/10 of the price of the commercial cookers. And it made some really good chicken =)
A sous vide cooker is a machine for cooking food using a temperature-controlled bath.
You can take whatever you want to cook – chicken, fish, steak, etc. – and put it in a vacuum-sealed bag. Next, set the temperature on the DIY Sous Vide to the temperature you want for your food. Then put the vacuum-sealed bag into the water and let it cook slowly for a long time (several hours).
When the chicken (or whatever you are cooking) is done, fry it quickly in a frying pan with high temperature to get a crispy finish.
This digital stopwatch circuit is a circuit I built for testing some 7-segment displays. It consists of four displays that I control using a microcontroller. The microcontroller counts and makes sure the correct LED segments on each display is lit up.
I have been looking for a good stereo amplifier circuit diagram for a long time. I am not a HiFi geek, I just wanted to build a simple stereo amplifier that could drive some speakers for my desktop computer.
All the schematic diagrams that I could find seemed to involve lots of hard-to-find components or you had to use it together with a pre-amplifier or some other amplifier stage. It was always something that made me hesitate.
But recently I found this awesome little chip called TEA2025! You only need a few capacitors to make a decent stereo amplifier out of it. It is so simple to build that I put it together on a stripboard in just a few hours.
Here is a really cool and huuuge recycling machine we built for a music festival in 2010. It is an interactive recycling station. The idea was to make recycling fun.
When you put garbage in it, the machine detects it and moves the ball on the left side one step up. When the ball has made its way all the way to the top, it is released down a pinball-ish slope while a “Tivoli” kind of tune is playing with lots of blinking lights.
The machine was on display for the first time at Øyafestivalen 2010 in Oslo. It was a real hit! Lots of people came by and recycled their garbage to get the ball to the top. People even picked up trash from the ground to put in it =)
In the following video, you can see it in action at Øyafestivalen. Elias (from thing-printer.com) is pretending he doesn’t know what it is and asks one of the girls who work there how to use it.
There are so many cool things you can make with mini radar circuits. I thought I’d share some examples from my time in the radar business. Then end with a few examples of where you can get a hold of a radar circuit.
Just to be clear: A radar is a sensor that uses electromagnetic waves for sensing. This is NOT ultra-sound. This is the real deal.