DIY super simple Arduino electronic component tester

This time I will show you how to make a super simple autodetecting and auto-ranging electronic components tester
The device is capable of testing:
- PNP, NPN transistors
- N or P Channel MOSFET
- Diodes, Double diodes
- Resistors
- Capacitors
- ESR of capacitors
- Inductors
- Thyristors, Triacs
- IGBT-transistors
The project was developed by Markus Frejek and the next Development of the project continues by Karl-Heinz Kübbeler and Markus Reshke. This is a great example of how to make a quality device with a little hardware and good software. There are many versions of this device that usually contain add-ons that complicate making and usually the software is given in the form of ready-made firmware (.hex file), which is also relatively difficult to set up on Arduino. It is also important to emphasize the use of the given libraries because they also have certain modifications
The hardware part of the device is incredibly simple and contains only a few components:
- Arduino Nano microcontroller
- Seven Resistors
- Small monochrome OLED display SSD1306
- and momentary switch
According to some instructions, the LED resistor on pin13 from Arduino should be removed (this resistor is circled in red in the picture), but in my case, the device worked without any modifications to the microcontroller. The instrument works stable with only one 3.7 Volt lithium battery.
The accuracy of the instrument mostly depends on the resistors R1 to R6, so they should have a tolerance of 1%. In addition, in the video, I will present you testing of several different electronic components.
Finally, the device is placed in a suitable box and is an indispensable accessory in your lab.

Instructions, schematics, and code at:

Visit my Youtube Channel for more Projects, DIY and How To Make videos:
by mircemk
SUBSCRIBE LIKE AND SHARE !!!!
Thanks for your Support !

Song: Jarico - Landscape (Vlog No Copyright Music)
Music promoted by Vlog No Copyright Music.

#NoCopyrightMusic #VlogMusic #VlogNoCopyrightMusic

[Cesarsound]

Nice project, simple and efficient, congratulations!

[UKCFT]

Очень классный проект! Спасибо! Обязательно повторю!👍👍

[EmersonCapuano]

Awesome. Can't wait to build this.

[chainleang]

Thanks for sharing.I've built it by following your instruction on arduino project hub, most things work finely except the display of resistors and capacitors and their unit character

[bonez]

Love it.. There a like for like to buy on the internet, but building your own like this, gives more satisfaction, and can be modified or amended at will, excellent project.

[luigimorelli]

FIRST TO COMMENT! :-D
A very intersting and easy-to-do device, thank you Mirko!

[markgreco]

Very very nice. So easy and clear thank you

[ciclovlogdewilly]

Genial lo voy a ensamblar siempre lo quise tener pero aca en Colombia son costosos los probadores comerciales . Muchas Gracias 😉

[electrokar]

hi sir can this device measure esr of capacitors in circuit without de soldering them? if not can you make one circuit and share it? that would be awful

[ciclovlogdewilly]

Amigo podrias decirme si puedo utilizar una pantalla nokia 5110 y donde puedo encontrar las bibliotecas nescesarias para el codigo principal Gracias

[zatisungur]

well done mirko 👍


I have 84x48 LCD for Nokia 5110
will it work if i use it?



Anyone using a 680K in a similar circuit, could this be it?

[jonatanrojas]

Hi I have a question in my assembly I tried it but it always returns me wrong data and not because it is if I am using the correct resistors and all, thanks

[Z-TechSolutions]

Brother can you share your modified libraries to show correct symbols?

[HermannLabs]

Very nice project. Please I made one from your schematic and code and it works well on serial monitor but the oled display doesn't work. What can be the problem?

[scify]

Hi, I want to build a PAT tester with an Arduino. Is it possible? Is there a tutorial? I can not fnd one

[drxftyplaya]

can u pls help me my circuit works well like yours but for some reason the capacitor prefix or ohms symbol is corrupted and it does not look well, tell me how to fix these things please

[jmmfbmk]

It works on 5v With internal 3v regulator?

[leewimbs]

This is an excellent project. Perfect. I can get the display to work on a .96 oled but can not get it to work on a 1602 display with a I2C. What do I need to do to use the 1602?

[kareemelmounier]

😍😍Very useful project
But I had a query because the code is a bit complicated
Can the code work on an OLED 1.3-inch screen? If the code has been modified, please reply, thank you, bro,

Welchen Widerstandsbereich deckt das Gerät denn ab.