Resistor Scanner

MhTechDev

Contains adsIn-app purchases

About this app

Tired of looking up resistor color codes? Using this app, you can get the resistance using your phone camera!

Features:
- Automatic detection: No aligning of the resistor needed*, the app locates it automatically and analyses the rings
- Live detection
- Manual adjustment: Not the correct rings found? Tap and hold to correct them
- Manual mode: Choose the ring-colors and get the resistance
- Detect multiple resistors at once
- Brightness and zoom sliders
- Touch to focus
- Load image from gallery

If there are issues, please send me a mail (attach screenshots)

* in the free version, resistors need to be placed horizontally

Ratings and reviews

No single correct answer. The program is nice, it is even trying to read many at once, and is trying to recognize the color bands. You can put a 10-pack, and it will start to show values for all. I tried with a few packs. Unfortunately, among those different values, and it can be "a choice" with as many as 3 to 4 values for a pack of identical 10 resistors, I never saw a correct result, tested on black, white, grey or brown background.

Sorry man, I wanted to give this tool a real good try, but I could never get it to detect the correct value on any resistor. I tried various white balance settings, brightness, etc. Nothing worked. Most of the time, the main problem is that it never detects a brown band properly. It always reads it as black. I tried different backgrounds as well, and also tried both 5% resistors (beige body) and 1% resistors (blue body). Also tried manual specifying the number of rings. I love that you tried.

Overall it seems to work but takes very specific lighting. using an S22+ the flash creates glare that confuses it. a sheet of black EVA foam, construction paper or felt reduces the glare and improves the contrast. link to upgrade and remove ads would not work. Just got it so I don't yet know about long term. 100ohm vs 220ohm detection worked mostly if the light was good and the zoom was larger. The more focused zoom the better so far. that makes sense as it has more pixels to work with

What’s new

Drastic rework of most aspects of the algorithm.
Improved UI.
Support for automatic direction detection
Pro version now supports freely oriented resistors
Various fixes and improvements.
Added faster performance mode
Further detection improvements are on the way!