1. 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...
  2. 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...
  3. 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...
  4. 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...
  5. 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...
  6. 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...
  7. 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...
  8. 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...
  9. 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...
  10. akarpe

    Haptic Relaxation Bracelet components

    Hey guys so I’m trying to work on a wristband/bracelet that executes haptic rhythmic vibrations when the user is perceived to be stressed/angry (detected through their heart rate). I’m not very experienced in electronics so wanted to know what components I’d need to do this project.
  11. A

    I want to combine isochronic waves from my phone output with strobing light and electrical pulses like a TENS, it is possible?

    I've been studying brain waves for a while and I want to do a project like this for educational purposes, manufactured TENS devices do not have an "audio input" they are programmed with an operating pattern, it would be necessary a circuit that "receives" the analog signal from the output sound...
  12. wizardman1313

    How to remove noise from sensor data in python?

    Hello everyone. I have a sensor that I am continuously reading data from, at a constant rate, using python. Looking at the data there is obviously noise in it (bounces around when it should be zero or a constant value). After googling for 2 days I've not been able to find a way to remove the...
  13. saviobezerra

    SAW Sensor - Why is my circuit not oscillating?

    First, sorry for the bad english. It's not the first time I've been looking for help on this circuit on the forum. I'm from Brazil, I'm doing a university project using which basically consists of using a colpitts oscillator with differential pair, with a SAW sensor in its feedback loop. The SAW...
  14. ShortCircuitJ5

    Battery, Light sensor and a mini motor?

    First the picture, because a picture is worth a thousand words. Is this possible? If the light is OFF, then the motor stops. Low light brigthness = low motor speed. High light brigthness = high motor speed. Thanks.
  15. azmathmoosa

    Low cost height sensor Lidar or ToF for detecting box heights on a conveyor

    Hi, I need some help in looking for a Lidar/ToF or any other height sensor for a barcode reading application. We have a machine vision camera with liquid lens whose focus can be adjusted to predefined focus planes. Now, if the height of the box is known, we can adjust the camera to the right...
  16. Matthias7

    Pressure Sensor for endoscopy

    Hi Do you know some pressure sensors, that can be used in medical application, especially endoscopy? Can You recommend me some, which are commercially available? Regards, Matthias
  17. JimAV

    How can a BGS sensor detect colors?

    Hello, I've been searching how can a Background Supression sensor detect colors but I still can't find an answer nor understand how is this possible. From what I've read, I know this sensor can detect an object regardless of its color since it measures refraction angles and not light intensity...
  18. priombiswas22

    State machine design for sd card detection and logging

    I am trying to design a state machine for the logging sensor which has the following scenario : Bootloader will send the signal whether a sd card is valid or invalid. If logging sensor receives valid signal, and there are error messages present, sensor will write the data to sd card and...
  19. Answerz

    PsOC 4 BLE (pins problems)

    I am running a project using a thermistor. I started by using the evaluation board as shown: The program runs fine. After that, I removed the module from the evaluation board and powered the module using an external power source (3V). I moved the resistor and thermistor from the evaluation...