ianjohnston.com has designed a nice power supply based on  ATMEGA328P and Arduino bootloader. The output is dual channel 0-24vdc @ 3A each, with preset constant current and independant voltage/current control. This isn't a full design blog but I've tried to document/add stuff as I...

Linear Technology Corporation introduces the LTC4123 to further expand its offerings in wireless battery charging. The LTC4123 combines a 30mW wireless receiver with a constant-current/constant-voltage linear charger for NiMH batteries, such as Varta’s power one ACCU plus series. An...

Maurizio tipped us with his latest article on how to use Serial Port in C#. The article does cover the basic code needed to achieve serial communication. The serial port of the PC is a very important resource both in industrial environment and in home-made electronics, due to the...

Researchers at MIT has announced a new RFID chip that is almost impossible to hack and it could mean that an identity thief couldn’t steal your credit card number by sitting next to you. The researchers’ new chip uses a bank of 3.3-volt capacitors as an on-chip energy source. But...

Linear Technology Corporation announces the LT3089, a rugged 800mA wide input voltage range linear regulator with key usability, monitoring and protection features. The device has an extended safe operating area (SOA) compared to existing regulators, making it ideal for high...

educ8s.tv has uploaded another tutorial on how to use a e-paper display with Arduino. Source code is provided. Electronic paper and e-paper are display technologies that mimic the appearance of ordinary ink on paper. Unlike conventional backlit flat panel displays that emit light,...

Daniel Johnson @ danielelectronics.com has build a VFD Tube Clock based on MSP430 microcontroller and explains it's code. I wanted to do a follow-up to my last clock build, the MSP430 Analog Gauge Clock, reusing some of the code from that project, and I had an IV-18 vacuum...

Denis @ envox.hr has designed a great PSU that is reliable, modular, programmable and of course Open source. The power supply is controlled by an Arduino and a touchscreen TFT screen is used to monitor and control it. It comes with a bunch of features you can check on the link...