Year: 2015

This is a large current Relay module with single pole double throw switch which provides normally closed and normally open operations. The Relay is the most common used module in application such as home automation, industrial automation, and machine on/off. Sometimes you...

The infrared (IR) is invisible radiant energy, electromagnetic radiation that we cannot see with our eyes, but we can sometimes feel on our skin as heat. The infrared light falls just outside the visible spectrum, beyond the edge of what we can see as red. Most of the thermal...

by Eduardo @ edusteinhorst.com: I’ve been meaning to hack my blood pressure monitor for a while, and I finally got around to doing it! So, the idea is to mod a regular electronic blood pressure monitor to make it wireless and connected to the Internet, much like iHealth BP5 or...

XPT2046_Touchscreen is a library for the XPT2046 resistive touchscreen controllers used on many low cost TFT displays. Touchscreen Arduino Library for XPT2046 Touch Controller Chip -...

Dave takes a look at the new Siglent SDG2122X / SDG2042X Arb Generator and compares it to the Rigol DG4162 and the older Siglent SDG5082. 1.2GS/s arb gen for US$499! Including some performance measurements on the Tektronix MDO3000 spectrum analyser. EEVblog #806 - Siglent SDG2000X...

Repair of PXI-2596 (Microwave Switch), PXI-4461 (Signal Analyzer) & PXI-4071 (7.5 Digit FlexDMM) -...

Brad has designed a cool binary PCB ruler, The DigiRule: So I made the DigiRule! – The DigiRule is a 15cm (6″) ruler with which is marked in binary digits rather than decimal. It has a number of built in digital functions including: logic gates, flip flops, counters etc. The...

4 Channel Infrared (IR) Remote is a simple project using the popular  HT12A and HT12D encoder / decoder chips from Holtek. Specifications Supply – Transmitter: 2.4 ~ 5 VDC, 5 V @ 20 mA & Receiver: 5 ~ 6 VDC, 5 V @ 50 mA  Output – 4 Latched/Momentary TTL compatible...