Difference between revisions of "Sensors"
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===Gas Sensors=== | ===Gas Sensors=== | ||
* https://www.eevblog.com/forum/projects/looking-for-a-sensor-to-detect-burning-smell-of-coal-and-wood/ | * https://www.eevblog.com/forum/projects/looking-for-a-sensor-to-detect-burning-smell-of-coal-and-wood/ | ||
| + | ===Infrared=== | ||
| + | * https://hackaday.com/2025/01/20/time-of-flight-sensors-how-do-they-work/ - IR sensors don't measure distance under 6 meters too well. You may have to make a LUT. This is because light travels so fast, the sensor can't keep up, supposedly. | ||
===Thermocouples=== | ===Thermocouples=== | ||
* https://www.eevblog.com/forum/beginners/calibration-how-to-mathematically/msg5367626/#msg5367626 | * https://www.eevblog.com/forum/beginners/calibration-how-to-mathematically/msg5367626/#msg5367626 | ||
Latest revision as of 07:58, 18 March 2026
List
Gas Sensors
Infrared
- https://hackaday.com/2025/01/20/time-of-flight-sensors-how-do-they-work/ - IR sensors don't measure distance under 6 meters too well. You may have to make a LUT. This is because light travels so fast, the sensor can't keep up, supposedly.
Thermocouples
- https://www.eevblog.com/forum/beginners/calibration-how-to-mathematically/msg5367626/#msg5367626
- https://www.eevblog.com/forum/beginners/calibration-how-to-mathematically/msg5367635/#msg5367635
example of finding a formula for thermocouple data (curve fitting)
Tips/Techniques
Sick Sensors Transistor Output
Some of these sensors (I've used the IR ones) require boosting via a transistor to get 5V output. They don't output 5V on their own (although if memory serves me there is some hack you can do to read the direct output without any transistor if you have a micro/arduino. I think it's something to do with reading it via an Analog pin. I'd have to check my code. https://www.eevblog.com/forum/beginners/any-help-raspberry-pi-prod-counter-w-reflective-sensors-output-concerns/msg5449463/ Example of data sheet here (note that the switching (digital output in newer data sheets) output is push/pull : http://web.archive.org/web/20190415090838/https://cdn.sick.com/media/pdf/6/56/756/dataSheet_WSE16P-24162100A00_1088329_en.pdf These can be expensive new. Look on the surplus market.
Misc
- https://www.eevblog.com/forum/repair/bad-suzuki-sas-(steering-angle-sensor)-ic-identification/ - Rebadged car sensor IDs itself on the CAN bus, blocking simple replacement.
