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Figure 8 Front-end circuit of a diy Geiger Counter kit

Geiger Counters – Not So Hard To Build

T.K. Hareendran - 09/13/15

Although they’ve been on the shelves of many online retailers for quite a few years now, Geiger-Tubes have [...]
Dehumidifier Hack Schematic

Dehumidifier Hack

Jim Keith - 08/02/15

What does one do when the electronic control of a modern dehumidifier goes south? Simple; gut the electronics [...]
can transceiver schematic circuit diagram

DIY CAN Transceiver

T.K. Hareendran - 07/02/15

CAN or Controller Area Network is a bus standard designed to allow microcontrollers and devices to communicate with [...]
steam sensor circuit

DIY Steam Sensor For Microcontroller

T.K. Hareendran - 06/15/15

Here is the circuit diagram of a simple steam sensor, wired around a handful of inexpensive components. This [...]
beginning of the project

Retro Handset For Mobile Phone

T.K. Hareendran - 06/13/15

Once again here is a true recycling project - turning an yesteryear's telephone handset into a general purpose [...]
home-made prototype

ESD Protection For USB

T.K. Hareendran - 06/08/15

There are a number of solutions for connecting your do-it-yourself project to a computer. Serial ports are easy [...]
Circuit diagram of the bistable relay tester

Bistable Relay Tester

T.K. Hareendran - 05/26/15

Bistable relays (BR) are widely used in battery powered equipments or applications with “memory function”. No doubt, when [...]
counterfeit money detector circuit

DIY Counterfeit Money Detector Project

T.K. Hareendran - 04/19/15

Counterfeit bill/money detection is an everyday necessity in this world of smart printers and hi-tech criminals. Most modern [...]
usb condom circuit

DIY USB Condom Circuit

T.K. Hareendran - 04/14/15

In a commercial manner, "usb condom" is a security device for preventing data theft through universal serial bus [...]
capacitive touch switch circuit

TTP223 Capacitive Touch Switch Circuit

T.K. Hareendran - 04/13/15

Here is a simple capacitive touch switch circuit for electronics hobbyists. Even though the circuit uses smd components, [...]
diy attiny2313 development board cirucuit

ATtiny2313 Minimum DIY Development Board

T.K. Hareendran - 02/10/15

This article shows you how to build your own ATtiny2313 microcontroller minimum development board in an inexpensive way. [...]
drop sensor circuit diagram

Vending Machine Drop Sensor Circuit

T.K. Hareendran - 01/19/15

Microcontrollers come in all sorts and sizes, and it’s very tempting to use them everywhere. If you are [...]
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