Jesus @ jechavarria.com pointed us to his latest project, a portable temp, humidity and ambient light datalogger. Hi all! I’m continuing here with the last board I design and now I’m continuing testing. It’s a battery-powered small datalogger based on a PIC18F2620...

Max Maxfield @ embedded.com discuss about IoT security and single chip solutions to this issue. The Internet of Things (IoT) has the potential to change the world, but only if it's secure. Securing the IoT is currently one of the greatest challenges for the creators of IoT devices...

Low-cost, open-source "sip-and-puff" interface to enable new methods of expression for people with and without limited mobility. by Jason Webb: Commercial sip and puff devices have been available for quite some time but are generally prohibitively expensive, highly specialized,...

SunDuino is a Single Board Computer with integrated Battery Charger, Voltage Regulators, I2C, Digital and Analog IO. It's main benefit is that it can run a compiled C app for years on a small battery or forever using built in solar charger. A background RTOS provides SLEEP...

Texas Instruments “TI” recently announced  FemtoFET series. There are N-channel MOSFETS like CSD15380F3 and P-channel MOSFETS like CSD25480F3 and CSD23280F3 in this series. These transistors are SMD (Surface Mount Devices) available in a very small package, the land grid array (LGA)...

David Jones made a tutorial on the fundamentals of zener diodes over his EEVblog youtube channel. David started the tutorial comparing between zener and regular diode. Both have the same characteristics and same I-V chart, but zener is designed to work in the negative voltage...

Magnetic field sensor project using AD22151 IC from Analog Devices, The AD22151 is linear magnetic field transducer. The sensor output is a voltage proportional to a magnetic field applied perpendicularly to the package top surface. The sensor combines integrated bulk Hall cell...

baelza.bubba @ instructables.com build his own PWM controller which is able to operate as a 12V Motor Speed Controller, LED Dimmer, Heat controller, voltage controller for an electrolytic etcher etc.   I did some hunting around on the interweb and found a pretty good starting...