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 [...]
DIY Linear Actuator Controller circuit

DIY Linear Actuator Controller

T.K. Hareendran - 01/05/15

Linear actuator uses a lead screw driven by a permanent magnet dc motor to create linear motion from [...]

DIY DS1307 RTC Module

T.K. Hareendran - 11/07/14

Although ready-made real-time clock (RTC) modules for microcontroller projects are available in every online shop, an inspired electronics [...]
hand crank generator

Hand Crank Generator

T.K. Hareendran - 03/03/14

Here is the circuit of a compact hand powered generator that can awake little electronics by hand crank. [...]
hot glue gun

Hot Glue Gun Hack: Temperature Ready and Power Indicator

T.K. Hareendran - 02/27/14

Hot glue gun is an indispensable tool for electronics hobbyists and professionals. Reasonably priced glue guns (and glue [...]
Attalus pcb laminator

PCB Laminator

P. Marian - 01/22/14

I used to design my PCB using one of the free pcb design software available on the website [...]

DIY SOT-23 Adapter

Jim Keith - 02/07/13

I mentioned in a previous article that TO-92 devices are starting to go away. Do not get me [...]
water softener power indicator schematic

Power Indicator for the Water Softener

P. Marian - 01/22/13

This power indicator circuit is intended to be used as an extension for the water softener. It might [...]
diy water softener system

DIY Water Softener System

P. Marian - 01/16/13

Hard water has a high concentration of minerals, and of these calcium salts are the most troublesome. But [...]
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