ATmega8 Thermocouple Thermostat
morethanuser.blogspot.com has published a thermocouple thermostat based on ATmega8 and MAX31855KASA Thermocouple to digital converter IC from Maxim. Here is a circuit, I used popular thermocouple type K and MAX31855KASA+ to interface it. I could also put some op amp, and connect to...
Continue ReadingMulti-Function SSD Shield for the Raspberry Pi 2
We came across this kickstarter campaign that features a multifunction SSD shield for Raspberry Pi 2. The shield includes SSD, WiFi, RTC w/Battery and high power USB: Pi 2 Design is excited to introduce the first offering in a new line of Embedded and Media-based I/O shields for the...
Continue ReadingArduino – Processing Laser CNC Project
Neumi @ github.com has build an Arduino based CNC project and source files are provided. This is my scratch build Laser CNC Engraver and PCB Exposer. It uses a 150mW 405nm laser diode and two CD drive motors and mechanics. A Processing sketch calculates the position of the pixels...
Continue ReadingUSB Cable Tester
davedarko wanted an easy way to check a USB cable, so he created this project: A little ATtiny45, some LEDs and transistors – battery powered. It scans through the cable with some blinking LEDs, then goes to sleep. USB Cable Tester -...
Continue ReadingCircuit lets you test capacitors for leakage
Raju R Baddi @ edn.com has published a circuit that enable you to test electrolytic capacitors and decide if worth using it on a circuit. The values in the figure are typical for general testing of all capacitors, from 1-nF ceramic versions to 1000-μF electrolytic types. The value...
Continue ReadingRFM69 to MQTT gateway using ESP8266
Martin @ harizanov.com has published an article on how to forward traffic from RFM69 to MQTT using ESP8266: I’ve mentioned my plans for this project during the IoT hangout session few months ago, it has finally materialized as working prototype. The blocker so far was the lack...
Continue ReadingATTiny25 based tea timer
Michael @ acidbourbon.wordpress.com has built the “perfect” tea timer project. He wrote a post on his blog detailing its assembly: Maybe you just drink coffee. Then this article is not particularly interesting for you. But if you like a cup of black or green tea once in a while...
Continue ReadingiBlinds – Make Your Existing Blinds Intelligent
Z-wave Alliance contest winner and Texas-based HAB Home Intelligence has launched a crowdfunding campaign on Kickstarter.com to bring iBlinds, a DIY home automation kit, to the market. The product will allow customers to make their existing window blinds “smart” and to control...
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