1. J

    Through Beam Sensor (Flame and Smoke immune). Product search.

    Hi guys, I'm searching for a Through Beam Sensor to use in a boiler room. The beam can not be affected by open flame and smoke. I'm having trouble identifying such sensor, did any of you guys ever use something like this?
  2. ponas.jonas

    Can I trim off the pins on a Force sensitive resistor without affecting the sensitivity?

    Hi all, I have some FSR 402 sensors that look like this: (Datasheet here) I also have some FCI clinchers that look like this: (LINK) Now I realized that I can add the clinchers only to a FSR without the pins. Can I trim off the end up to here: so I could add the clinchers? I would like...
  3. F

    Car side-mirror dimmer simulator circuit - DIY

    Would like to make a simple car side-mirror simulator circuit. The side mirrors I installed (for better blind spot) do not have a dimmer circuit and I am getting LIN bus errors since the dimmer wires are disconnected. Would like to DIY something that fools the car into thinking it is...
  4. M

    How to solder wire on Piezo Disc?

    I am working on a project that has this piezo sensor I want to know how I can solder wire to it 1)What kind of wire do I need to use 2)Do I need to place any contact points on the piezo disc (contact are metal plate placed on some piezo) 3)What is the redial and normal resonating frequency in...
  5. Ajaygoshbin

    Simulation of ultrasonic sensor

    This is a system to detect any intruders using ultrasonic sensor . The buzzer should ring if the timer gets triggered . Somebody help me with the simulation using proteus or any other softwares
  6. fedimakni

    underwater fish detector

    I would like to create an underwater fish detector - completely operating underwater (personal project) The enclosure will be a waterproof hollow cylinder (possible material to use are: acrylic, Polycarbonate or PVC), a PCB will be sealed inside that enclosure containing the sensor (the sensor...
  7. M

    Circuit board to amplify and filter the electrical signals from the piezoelectric disks

    Hi, im working on creating a step counter using piezoelectric disks. The idea is that I want to use the disks as sensors and be able to read their voltage and current values with an Arduino Uno. Im also using a voltage sensor, the sensor that will be used is an ACS712 that can detect the flowing...
  8. TommasoB

    Custom Flight Controller Board design - Suggestions and Criticisms

    Hello community, My name is Tommaso Bugliesi and I am currently designing a custom flight controller board. It's not just one board, but rather two boards to be stacked on top of each other using rubber dampers. The hole spacing is 30.5mm, and the overall dimensions of the two boards is...
  9. Q

    Would You Be Interested in an Affordable DIY Lock-In Amplifier?

    During my PhD, I spent countless hours conducting optical experiments, where lock-in amplifiers became an integral part of my research. Their precision and effectiveness were unmatched, but so was their cost. Recently, while doing a personal optics project, I found myself in need of a lock-in...
  10. Stephanus Kevin

    Symmetric Output Sensors (Help)

    A sensor works by outputting a voltage of -400mV to +400mV with a impedance of 1M Ohm. a. Design and simulate a circuit that only uses active components, such as an in the form of an OP-AMP so that the output reads 0V to 5V. Create the circuit in LTspice. Can anyone help me with this topic...
  11. B

    Photodiode ThorLabs DET08CL not outputing what's expected

    I'm currently trying to characterise a NIR 940nm laser device that I have recently made. The main thing I want to achieve is to see if the laser is truly doing what the enable signal told it to. I began with a rather slow square wave - 1Hz at 50% duty cycle. I used a ThorLabs DET08CL...
  12. MrNams

    ESP32 to control 3 Phase Submersible Pump

    Hello All, I am working on IOT based Smart Irrigation project. In first phase I shall work on controlling water pump, right now my 7.5hp motor is controlled by "3 phase star delta starter". Could you please provide/point to web source for following queries? 1) Three phase motor don't have...
  13. R

    Combine grain loss sensor questions 2: Electric Boogaloo

    I'm back. Sorry about letting the tread go cold, but we got busy in the field. If I have new eyes and brains here, the old thread is here: Combine grain loss sensor questions | All About Circuits . We used the combine to cut rye, and I managed to catch (as a couple people mentioned) that I...
  14. R

    Combine grain loss sensor questions

    Hello, I am a farmer not an electrical engineer, but I have recently been trying to learn more about the electronics we use in farming. I have been trying to troubleshoot the grain loss system on our combine that hasn't worked in years. Keeping in mind that I am a farmer, as I understand it the...
  15. levi_ackerman

    Search for UART sensors

    I’m developing a Modbus RTU architecture. The master of this architecture is my Beagebone Black , which I want to connect via RS-485 serial communication to my sensors. Since I’m using RS-485 converters (RS-485 Converter) which need a UART input as far as I understand, I was looking for sensors...
  16. cinar

    Troubleshooting circuit design for sensor input and desired output range

    I designed a circuit to process input from a sensor with a range of -300 mV to 300 mV. The desired output of the circuit is 0 V to 600 mV. To achieve this, I used the op-amp equation Vout = Vin + 0.3 as a basis for my design. However, when I simulated the circuit, the output was only around 900...
  17. boodlefin

    Flow sensor integration with the Car electronics system

    I need to integrate a Fuel flow sensor mentioned here to the car dashboard system, so as to display the flow readings on the dashboard screen and/or to a seperate display screen when fuel passes through the sensor . I'm specifically using this device which has a Working Voltage: DC 5V~18V...
  18. D

    Extend Frequency Range of 4.5hz Geophone

    Hi Everyone. Please go easy. I'm an electronics noob with little experience. I'm good with programming, mostly in Python. I've been messing with a 4.5hz natural frequency geophone and looking at ways to extend the bandwidth to 0.1hz at decent gain. I found a paper and got some help trying to...
  19. amishenglol

    How to add sensor to the following code

    Hi, I have a code that uses 1.1Vref (because the system is powered by battery) (ATTINY44A IC). I have connected one sensor to it and now i would like to read value of the sensor. Please check the code below. This code uses internal reference voltage and outputs unchanged voltage rating.(THE...
  20. serhiip

    How to send sensor signal to 5-10km?

    Now I detect motion with my Arduino Nano and 3pin motion detector: When detector triggers, I need to send signal (distance at least 5km) to another Arduino Nano and catch it. As far as I understand, 433Mhz is the optimal frequency for this. Please suggest me what should I use? Which circuit...
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