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Results tagged with sensor
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user 187471
Sensors convert a physical quantity (e.g. temperature, pressure) into an electrical signal.
9
votes
Sensor to distinguish between different types of pegs on a pegboard
Linear Hall Effect Sensor Datasheet - Honeywell
(11) Allegro A3144 Datasheet
(12) TCS230 TCS3200 Color recognition module Color sensor module - US$4.6
(13) MCP3008/MCP3208 10/12 bit ADC Testing and Programming … - EESE, tlfong01
Appendices
Appendix A - Pressor Sensor Spec
HALJIA 5Pcs BX120-3AA High Precision Resistance Strain Gage Strain Gauge GAGE Full Bridge Used for Pressure Weighing Sensor
Price: £6.99 …
- 2,956
24
votes
Why does it take time for electronic scale to measure?
The balance usually has four load cells at four corners, each of which connects to a HX711 weight sensor with a sort of Wheatstone bridge measuring voltage. … The HX711 sensor itself is 24 bit accurate, and only takes 0.1 second to do the analog to digital conversion. …
- 2,956
1
vote
220VAC to 12VDC Capacitive Dropper Power Supply Driving Relay Problem
Question
How come my capacitive dropper is not working?
Answer
Update 2020oct13hkt0914
The OP seems using a relay switch without any flyback diode. The back EMF from the inductive coil of the relay …
- 2,956
-2
votes
What kind of sensor can sense Infrared radiation from any direction?
References
(1) PIR Motion Sensor Module
(2) PIR (motion) sensor product sheet US$10 - AdaFruit
(3) PIR (motion) sensor tutorial - AdaFruit
(4) Fresnel lens - Wikipedia
(5) Rpi3 LIRC Library and UART IR …
- 2,956
3
votes
Capacitive moisture sensor not quite working
What I have researched so far
(1) I started by a preliminary inspection of the three moisture sensors to get a overall picture of capacitive sensor, and why and how it is different from resistive sensor … F - Calibrating the Capacitive Sensor
Now I am calibrating my capacitive moisture sensor. …
- 2,956
7
votes
How can I use a 2N2222 transistor as a temperature sensor?
Question
How can I use a 2N2222 transistor as a temperature sensor? … Actually my calibration plan is to use the DS18B20 temperature sensor to replace my cheapy home use thermometer. …
- 2,956
7
votes
What are the two sensors doing in the automatic bread production line?
Sensor 1
Sensor 1 blinks Green when no bread in sight. Blinks Yellow as soon as bread comes up. So I guess it is a bread detector. … Sensor 2
In the same video, Sensor 2 is not blinking at all. I think, similar to Sensor 1 above, reflection get interrupted means bread (in this case, another tray of bread arrives. …
- 2,956
1
vote
Reflective optical sensor
Question
How come it is so hard to calibrate the TCRT5000 IR reflective sensor? … References
(1) TCRT5000 IR Reflective Sensor Module - AliExpress US$1
(2) Op-am Comparator - Electronics Tutorials
(3) TCRT5000 IR Reflective Optical Sensor Module (approx 1″ detection range) - ProtoSupplies …
- 2,956
0
votes
Inappropriate readings of pulse and temperature sensor (LM35)
LM35 shouldn't give such an ridiculously inaccurate reading. The spec below shows how precise (+- 0.5°C) it is!
Perhaps your calculation is dodgy! :)
Let me check your calculation. Suppose yo …
- 2,956