miniLOG is a precise standalone voltage logger that save the data on a SD card. It has 4 basic analog channels: – one has 12bit resolution for voltage measurements, – two channels have 10bit resolution for voltage measurements and – one channel has 10 bit resolution for current measurements. Input voltage range is 0-25V and […]
miniLOG – Precision Standalone Voltage Logger Continue Reading
Motivation Though I am a musician I don’t care for calling an expensive hi watt stereo my own. For years I have used a homebuilt stereo amplifier built around the TDA1554Q IC (basically just this chip in a nice box) and I am still very happy with the sound quality. This amp serves as a
digitally controlled HiFi Amp with 4 way mixer Continue Reading
Overview The Arduino WiFi Shield connects your Arduino to the internet wirelessly. Connect it to your wireless network by following a few simple instructions to start controlling your world through the internet. As always with Arduino, every element of the platform – hardware, software and documentation – is freely available and open-source. This means you
Arduino Wifi Shield is back on the store! Continue Reading
Motivation As you may have seen in earlier articles, I produce my own PCBs at home with the toner transfer method. After some experimentation the PCB quality is quite satisfactory, but drilling the holes for even a moderate number of through-hole components is very tiresome. When you design your PCBs with a proper CAD software
(semi) automated drill press table for PCB manufacture Continue Reading
A while ago I needed some small value resistors as current shunts and I started wondering about the feasibility of using traces as resistors. There are many theoretical reasons as to why copper traces make bad shunt resistors, but I found surprisingly little practical data. So with my next OSH Park order, I threw in
Using Traces As Resistors Continue Reading
A synchronous PWM controller for negative-to-negative or negative-to-positive DC/DC conversion, the LT8709 from Linear Technology is easily configured for buck, boost, buck-boost, and inverting topologies to accommodate a wide range of power-supply designs. The device’s synchronous operation means that the output diode is replaced with a high-efficiency P-channel MOSFET, increasing efficiency and allowing for higher
Buck/boost/inverting controller delivers up to 20 A Continue Reading
There is a new addition to the popular WS2812 family of RGB LEDs with integrated controller: A 8mm through hole version. Right now they seem to be in pilot production stage. The only place that has them is Soldering Sunday where they are called PixelBits. My understanding is that they will also be available at
New member of the WS2812 family Continue Reading
We are eager to announce the launch of the official Arduino Starter Kit! We have been working hard together in developing a complete selection of 15 projects that will let you become a true arduino tinkerer! But that’s more: read through for the whole components and projects list We are aware this kit will let a
Arduino Starter Kit is here to Rock Continue Reading
KORG INC and Noritake Co., Limited are proud to announce the successful development of the ground breaking technology, Nutube, a new miniaturized and high performance tube. In cooperation with Noritake Itron Corporation, KORG INC. has developed the Nutube to offer incredible reliability and efficiency while still generating the same rich harmonics which vacuum tubes are
KORG INC and Noritake Co., Limited Release Innovative Vacuum Tube: the Nutube Continue Reading
When at home, I do not carry my phone with me everywhere… so sometimes phone rings or an SMS comes in and I do not hear that. With the volume of music played by the teenagers at home, that is not a surprise 🙂 so I decided to build a small accessory that will show
Bluetooth mobile phone accessory for Missed calls and SMS Continue Reading
