by Kerry D. Wong: LM2596 based step-down DC-DC converter modules can be bought on eBay quite cheaply for around a dollar each. But how do they perform? Is it safe to use it to power your design? Let’s find out. According to TI’s website, these LM2596 step-down (buck)...

Simplified structure. Portable so you can take it anywhere. Quality prints at breaking low price. Take it wherever you want. The Freaks3D weighs 2.945kg and battery compatible. It is completely portable. Small enough to blend in with any table but large enough to unleash your...

In the last period we can see, that producers go on the way of processors combined with interface converters grouped into a single chip. Company Wiznet also goes this way. At the end of May 2015, Wiznet launched on the market the new W7500, combining the HW TCP/IP interface...

New aerial from 2J will surely not surprise you by its size, however features of the antenna are worth noticing. 2JW035 antenna measures only 52,5mm and is intended for WiFi and Bluetooth devices in 2.4 a 5GHz bands. The gain is 5dBi and the VSWR value is below 2.6:1. A big...

Here is an all-analog, all-through-hole, cheap & cheerful preamplifier for that perennial problem of getting the microphone amplification just right, which is a challenge not only with the faithful reproduction of lead vocals during concerts and recordings, but also with campfire...

Felix of LowPowerLab posted an update on his DoorBell Mote project: My first DoorBell Mote prototype was working nicely and it allowed monitoring the door bell (while also triggering it remotely – toddlers love it). But I wanted more. On weekends the family likes to get a well...

by Matt Venn: A wristband that tells you energy changes in your home. It connects via a Raspberry Pi computer to a base station like a 'current cost' or similar. When a change in energy usage occurs, the wristband vibrates and a small LED bargraph shows your current usage from 1 to...

by toptechboy.com: This series of lessons will teach you how to take your Arduino projects to the next level by having the Arduino interact with the Python programming language. Python is a free program you can download. Since you have already learned the fundamentals of programming...