![]() ![]() This backlight uses considerable battery power. There are few negative things on the design:ġ) The press to test switch is lacking a large surface to press.You might want to add a small cap to it or replace the original button with your own more user friendly button.Ģ) The choice of LCD (white on blue) requires the use of the LED backlight always. The unit does provide the same 2.1/5.5 MM power jack as used on Arduino’s if you want to power it with a 9vdc wallwart. This version uses the ATMEGA328P-PU (same 28 pin DIP package that the Arduino UNO uses). This allows you to extend the design, change its behavior or just use it as is, the choice is yours. Since the PC board in this kit implements the open source project schematic with 100% accuracy, the board also uses the open source AVR code. This kit is an accurate implementation of the open source project described in all detail at and a newer version of it at. Here is my circuit (with my own measurement leads added to kit) measuring BS170 FET: When I turned around it (needed de-soldering and re-soldering), everything stated works well as designed. I first accidentally installed in wring way, and the circuit worked a little bit strangely (but almost worked). Only problem I had building: There was no clear indication the way the button should installed to circuit board. When you put all components in right places add the solder – you’ll end up with a working instrument. But, that’s okay because when you install the parts per the component outline/value printed on the top of the PC board. The parts and board are excellent quality, no missing or wrong parts.īeginners beware – there are no instructions or documentation with this “kit”, it is a PC board and a bag of parts. The kit comes in a small plastic bag that included all the components and circuit board. This device is sold as DIY kit that you must solder yourself. Zener-diode: If reverse break down Voltage is below 4.5V, these are shown as two diodes with different voltage drops Thyristor and TRIAC: meter shows only the component pin-outĭiode: diode direction, voltage drop and capacitance MOSFET: threshold voltage and gate capacitance measurement Potentiometer: Support two measuring resistors connect at the same time -> can measure potentiometerĮSR measurement: Can detect more than 2UF capacitor equivalent series resistance (ESR), with a resolution of 0.01Ohm.īipolar transistor: amplification factor (B) and conduction voltage emitter junction (Uf). Resistor: 0.5Ω ~ 50MΩ (resolution is 0.1Ohm)Ĭapacitor: 30pF ~ 100mF (resolution up to 1PF) The kit has 25 mA operating current and 20 nA current in shutdown, so suitable for battery operation (without separate power switch). The device can be powered with 6FF22 9V Battery, or DC 5.5V ~ 12V via DC socket. The device has auto power off with delay. Each test time is about two seconds, only large capacitance and inductance measurements will take a long time. The meter features single key measurement operation: Just press key and meter does measurement automatically (determine component type and measure it’s values). ![]() ![]() You can connect the measurement wires to components as you want, the automatic detection pin definitions will tell which wire is which pin. The meter has automatic detection PNP and NPN type bipolar transistors, N, P -channel MOSFET, JFET FET, diodes, two diodes, thyristors, resistors, capacitors, inductors. It can detect component types and measure them. The reasons for interests are good specifications, based on open source hardware design and price is reasonable ( $12.22 / 9.37 Euro).ĭIY Meter Tester Kit For Capacitance ESR Inductance Resistor NPN PNP Mosfet M168 is an electronics component measurement device. I saw an interesting kit at and decided to try it: DIY Meter Tester Kit For Capacitance ESR Inductance Resistor NPN PNP Mosfet M168. DIY, Open hardware, Product tests, Tools. ![]()
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