Year: 2015

by Akin Yildiz @ instructables.com: it was one year ago that i have published the plant pot - world's first stand alone smart plant pot that can email you when it's thirsty, cold, hot, sleeping etc. a lot has changed since the first release. today I would like to share with you...

An easy to build spectrum analyzer for the homebrewers. Specan - A reboot of the W7ZOI/K7TAU spectrum analyzer -...

This simple A2D (Analog to Digital) Converter Board can log upto 8 channel of analog signal with 8 bit resolution. This board uses the ADC0808 chip from National Semiconductor. Analog to Digital Converter module -...

0 – 20V LED Voltmeter kit displays the voltage of the source using 20 LED’s. This projects is based on the famous LM3914 IC from National Semiconductor. Power Supply Input: 5 VDC Max @ 30 mA in DOT mode and 300 mA in BAR mode 0-20V Bargraph Voltmeter -...

  If you are looking for a touchscreen LCD display for your next project you should take a look at Riverdi LCD solutions. Their aim is to produce innovative, high quality LCD solutions at affordable prices. They were kind enough to send us a sample of a FTDI FT801 controller...

by Ethan Zonca @ protofusion.org: Therm is a very small PID controller with an OLED display, thermocouple interface, and USB port. It can switch an external solid-state relay for driving large loads, or a transistor for driving small loads. When attached to a computer, it enumerates...

A loudspeaker without a membrane which can be mounted on any flat surface solves aesthetical and technical problems. Fans of HiFi sound and similar „audiophils“ usually don´t cover their loudspakers and surely not their membranes. Firstly, to cover a beautiful top-class...

This project introduces the use of PCA9550, an LED driver that causes the 2 LEDs to ON/OFF or in a flashing state at programmable rate. It has 2 selectable, fully programmable blink rates between 0.172Hz and 44Hz or 5.82 seconds and 0.023 second respectively. Its internal oscillator...