ATmega8 Thermocouple Thermostat
https://www.electronics-lab.com/47832-2/
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 Atmega8’s ADC, but 31855 is for lazy people and has everything inside, […]
Multi-Function SSD Shield for the Raspberry Pi 2
https://www.electronics-lab.com/multi-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 popular Raspberry Pi 2. The CSB502SSD Multi-Function […]
Arduino – Processing Laser CNC Project
https://www.electronics-lab.com/arduino-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 and send them to an Arduino Mega, […]
USB Cable Tester
https://www.electronics-lab.com/usb-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 – [Link]
Circuit lets you test capacitors for leakage
https://www.electronics-lab.com/circuit-lets-you-test-capacitors/
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 of CREF in the circuit is near […]
RFM69 to MQTT gateway using ESP8266
https://www.electronics-lab.com/rfm69-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 of ESP8266 RFM69 driver and free time on my […]
ATTiny25 based tea timer
https://www.electronics-lab.com/the-perfect-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 you might know the problem: You prepare […]
iBlinds – Make Your Existing Blinds Intelligent
https://www.electronics-lab.com/iblinds-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 multiple devices with a touch of one button on a phone, tablet, PC […]
PULPino – An open-source microcontroller system based on RISC-V
https://www.electronics-lab.com/pulpino-an-open-source-microcontroller-system-based-on-risc-v/
PULPino is an open-source microcontroller system, based on a small 32-bit RISC-V core developed at ETH Zurich. The core has an IPC close to 1, full support for the base integer instruction set (RV32I), compressed instructions (RV32C) and partial support for the multiplication instruction set extension (RV32M). It implements several ISA extensions such as: hardware […]
Time-based One-time Password fob for Google Authenticator
https://www.electronics-lab.com/time-based-one-time-password-fob-for-google-authenticator/
conoroneill.net has coded an Espruino Pico to work like a HID device. Now that the Espruino Pico has (beta) HID support, it can pretend to be a keyboard or mouse (or other HID compatible device). This makes it possible to send characters to the active window on your Windows/Linux/Mac PC. I’ve cobbled together some code which […]