Monthly Archive: May 2017

2

Homemade Arduino (Arduiniq ver.3.0)

If you need to use Arduino shield on your projects must use an Arduino Uno or Arduino Mega boards or made your Arduino style development board. Schematic and board was designed using (Autodesck) Eagle PCB...

9

Pseudo-stereo adapter

TDA3810 is an old spatial, stereo and pseudo-stereo sound circuit who is hard to found, so I search replacement solution. In an old romanian book named “Electronica peste tot’ (Electronics everywhere) writted by mr. I.C.Boghitoiu,...

1

LED bulb for solder gun

I use an old solder gun for made quickly some montages who is equipped with 6,3V incandescent bulb. So, Inadvertently, I broke the bulb. Because, I want to quick solve the problem, inspired by my...

30

Monostable relay with 555

A practical application for monostable relay is temporary stair lights. After you short push on a button, light is on for few seconds (or minutes), after that lights is off. In roumanian old magazine...