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“The GeigerMller counter is a relatively simple tool to measure ionizing radiation. To increase sensitivity, construction presented here contains three (instead of one as usually) soviet STS-5 lamps. This is important for measurements of natural sources of (low) radiation …

“A retro hand-held gaming system cheap enough for a kids’ project. Possible? Absolutely! Just bring on the power of Arduino and cheap Chinese components! This project was designed as a soldering project for a group of half-a-dozen 9 and 10 …

“Ive been thinking about building stuff with FPGAs for a while, and usually get turned away because FPGAs are considerably harder to implement than microcontrollers since they have no on-chip memory. It is necessary to re-program the gates every time …

“In my last post Ive described the design and construction of my LED dimmer project. This project here is similar but a bit more involved. It controls RGB LEDs so it can not only change the brightness but also the …

“The MSP430 is a great little micro, and with some proper marketing, it could easily have provided an alternative to the AVR and PIC. However unclear, obfuscating, archaic documentation, spread very thinly over the web has made this little micro …

“This simple A2D (Analog to Digital) Converter Board can log upto 8 channel of analog signal with 8 bit resolution. This board uses the ADC0808 chip from National Semiconductor.”

“DC Motor Direction Control project offers direction control using digital logic gates and a DPDT relay.”

“An Arduino Nano based Spot Welder for battery welding. This Spot Welder can be used to weld 18650 batteries. It needs a 7-12V power source (12V recommended) and uses a 12V car battery as welding current supply. Typically one 45Ah …

“Hi all! After a couple of months with a lot of work, I come here again with the last board I develop before Christmas. Its a dual USB serial and I2C converter based on two MCP2221 Microchip 2.0 USB …

“This instructable is about a universal short circuit protection that I’ve designed to use in bench power supplies. I’ve designed it to fit in most power supplies circuits. In order to this circuit fit in your bench power …