Measurement (126)

Browse through a total of 126 measure projects. Easy-to-build DIY measurement projects, kits and electronic circuit schematics with guides.

audio indicators   battery indicators   battery monitors   metal detectors   temperature sensors   thermometers   vibration  

digitimer 2

Matchbox-Sized Digital Timer

T.K. Hareendran - 04/12/17

For one of my hobby projects, I needed to add a small countdown timer at an affordable cost. [...]

Simple EMF Detector/Meter

T.K. Hareendran - 02/09/17

I recently built a simple electromagnetic field (EMF) detector based on a code by Christian Figge that I [...]
live fence tester

Cordless Live Fence Tester

T.K. Hareendran - 07/11/16

Electrified fencing is usually used to control animals with smaller and cheaper fence constructions than would otherwise be [...]
label sensor circuit

Detect Labels w/ Reflective Optical Sensor

T.K. Hareendran - 10/05/15

Here is the circuit of a little label sensor ideal for detecting labels on bottles. The circuit offers [...]
Input Offset Voltage Test Schematic

Test Op Amps Via Simple Input Offset Voltage Measurement

Jim Keith - 10/04/15

Measuring this one vital parameter (Input Offset Voltage) provides a simple means of determining if the DUT (Device [...]
inductive sensor working principle

Inductive Proximity Switch w/ Sensor

T.K. Hareendran - 09/28/15

Position Sensors play an important role in our daily lives. A position sensor, as the name indicates, provides [...]

Motor Speed Sensor Module Circuit

T.K. Hareendran - 09/22/15

Here is a motor speed sensor module, the major goal is to check the rate of an electric [...]
usb charger doctor

USB Charger Doctor Unboxed

T.K. Hareendran - 07/05/15

Recently I bought a little gizmo called as “USB Charger Doctor” from an online store. The little usb [...]
arduino fingerprint module

How To Use Fingerprint Identification Modules

T.K. Hareendran - 05/18/15

Biometric identification from a print made by an impression of the ridges in the skin of a finger [...]
Mains Voltage Sensor circuit

Mains Voltage Sensor

T.K. Hareendran - 05/07/15

This compact mains voltage sensor is intended to monitor and signal to another circuit, for instance a microcontroller, [...]
circuit diagram of the wind sensor from modern device

Measuring Air Flow

T.K. Hareendran - 04/24/15

Here is an introduction to the low cost anemometer (wind sensor) from Modern Device ( . This small [...]
humidity to frequency converter circuit

Light & Humidity To Frequency Converter

T.K. Hareendran - 04/21/15

TSL235R is an eternal light-to-frequency converter, and its sensors are widely used as light sensor heads in today's [...]
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