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

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.

Liked the app. 8 out of 10 times it shows the correct resistance value from the colour codes. Helpful for those who are colourblind or sometimes even colours printed on some resistors have slightly different hues. I mainly liked the zoom and exposure sliders provided on the app screen. It would be nice if colour hue adjustment could be added for using under yellowish fluorescent light. Although the app is too big in bytes it's good enough.

I scanned a new pack of resisters with labels. It finds the color bands, but just can't seem to get it right. Back to the glasses. Response to developer: Yes I tried black background. If it had calibration I would give it another try.

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!