Resistor Scanner

Contains adsIn-app purchases
2.6
2.4K reviews
500K+
Downloads
Content rating
Everyone
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About this app

*** Please leave a review/rating!!! ***
*** Like the app? Please consider buying the Donate version ***

Tired of looking up resistor color codes? Using this app, you can get the resistance of a resistor just by taking a picture of it!

The resistor should be horizontal on the image in order for the app to find/detect it correctly!
Some colors depent highly on the device, please use the "tendency" sliders in the settings to adjust.

Features:
- Automatic detection: No aligning of the resistor needed*, the app locates it automatically and analyses the rings
- Aligned live detection: Align the resistor with the rectangle and get the resistance instantaneously
- Automatic live detection: Like the automatic detection, but live!
- Manual adjustment: Not the correct rings found? Tap on the rings to correct them
- Manual mode: Choose the ring-colors and get the resistance
- Detect multiple resistors at once
- Exposure compensation
- Manual tuning of different color-tendencies.
- Zoom, flash and different focus modes
- Touch to focus
- Load image from gallery

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

* The resistor should be held horizontal with the tolerance-ring to the right
Updated on
Feb 19, 2020

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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Ratings and reviews

2.6
2.35K reviews
Dan Wilson
January 1, 2023
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.
3 people found this review helpful
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David Hanson
January 19, 2023
Great idea. I really wanted this one to work but after trying with a number of different samples it failed to decode any of them correctly. Tried on two different devices with the same results on both. Reading some of the other reviews suggests results may improve with a higher end device but we have to work with what we have. Will be sure to revisit when I next upgrade my phone.
4 people found this review helpful
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A Google user
May 14, 2019
This resistor scanner did a great job, it can even scan multiple resistors at once with high accuracy, wish I can post screenshots in this review. For those who haven't succeed using this app try to lessen the glare on the resistors and make sure you have a good focus, no need to take a big resistor foto, just take the best focus that you can. I never write app reviews unless they are really good or really worse. And this one is a great app.
76 people found this review helpful
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What's new

+++ Complete rework of camera interface +++
+++ Added manual focus (focus using a slider) +++
+++ Focus should work a lot better on most devices now +++
+++ Added white balance setting +++
+++ Added option to remove ads from within the app, instead of buying the Donate version +++
+++ Minor adjustments +++
- - - Live detection has been temporarily disabled - - -