Free Elektor Circuit – Acoustic IR Remote Control Tester
Test/Measurements

Free Elektor Circuit – Acoustic IR Remote Control Tester

In this circuit we use the output signal from a standard IR receiver (IC1 in the schematic of Figure 1) to drive a miniature loudspeaker. The IR receiver from Vishay used here is available for various frequencies ranging from 30 to 56 kHz. A large number of IR remote controls operate...

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Continuity Tester using ATtiny85
Test/Measurements

Continuity Tester using ATtiny85

This article describes a simple continuity tester based on an ATtiny85. The tester features a buzzer that sounds to help you determinate the trace continuity. It is designed for checking circuit wiring, or tracing out the tracks on a PCB. According to it's author David Johnson-Davies it...

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5848
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2 Comments
HPS140MK2, The New Handheld Oscilloscope
ProductsTools

HPS140MK2, The New Handheld Oscilloscope

Velleman Inc., a producer and a distributor of electronics, has produced a new handheld oscilloscope with the same power of its HPS140, but with smaller size and modern design. HPS140MK2 is a 11.4 x 6.8 x 2.2 cm versatile component tester that fits in your pocket. This small...

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4867
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Analog Capacitor ESR Tester
Test/Measurements

Analog Capacitor ESR Tester

TallMan's lab @ runawaybrainz.blogspot.com build a nice looking and simple analog ESR capacitor meter based on a EEVBlog forum topic. I finally got round to making my capacitor ESR tester this week after finding a nice simple 5 transistor version by EEVBlog member Jay_Diddy_B....

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10499
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1 Comments
iPhone Battery Charger / Tester
USB

iPhone Battery Charger / Tester

mozzwald.com has designed an iphone battery charger /tester. I have seen technicians often replace batteries when they may not necessarily need to be or ignore the fact that they could be the cause of the issue at hand. To remedy this I designed a basic iPhone battery charging...

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4914
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USB Cable Tester
USB

USB Cable Tester

davedarko wanted an easy way to check a USB cable, so he created this project: A little ATtiny45, some LEDs and transistors – battery powered. It scans through the cable with some blinking LEDs, then goes to sleep. USB Cable Tester -...

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3578
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LED Tester with LCD Display
Mcu

LED Tester with LCD Display

David @ robotroom.com build a microcontroller based LED tester with LCD display that shows the LED voltage, the current limit in mA, the desired led voltage and the calculated resistor value. The LED tester is based on ATtiny84 mcu which performs all the measurements and calculations...

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8134
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ATMEGA328 Component Tester
Mcu

ATMEGA328 Component Tester

baweja_akshay @ instructables.com has build a ATMEGA328 component tester that is able to test Resistors, Capacitors, Inductors, BJT, FET, Thyristors and more. Coming upon COMPONENT TESTER so it can test almost everything, obviously not the power components because they require more...

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18638
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