Microwave Sensor Help
Would like suggestions for a microwave motion sensor that I can install/encase in a thin wooden box that will activate a MP3 or Wave recorded voice message. Would like an all-in-unit with sensor,...
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Ph-V2.0 problems connection with esp32
Hello I have ph-v2.0 sensor and it's different So can any one help me to how connect it with esp32 4 posts - 4 participants Read full topic
View ArticleAC Voltage input in Arduino NANO
Hey there I am dev I am working on a project where we read magnetic values and send them to phone via bluetooth magnetic values are fetch by Hall Magnetic sensor that has limited range where as we...
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Weird average signal voltage dropping minute by minute
I recently bought a Grove sound sensor from the Arduino Official Store and connected it to Arduino Mega 2560. I wanted to measure the mid voltage I'm getting in silence and surprisingly found out that...
View ArticleA0221AU ultrasound distance sensor
Hi all, I bought 2 A0221AU UART ultrasonic distance sensors. I tried both with the official arduino code on an Arduino Uno R3, checked the code several times, ... but the sensors (both were tested...
View ArticleBH1745 communication not working
My friend and I are trying to write a library for the Pimoroni BH1745 color sensor breakout, as the existing libraries do not completely support all features. However, Wire.available() always returns...
View ArticleUltrasonic sensor HC-SRO4 giving 0 distance whenever I tried to test the...
Hi all, I need a big help. I am new to Arduino and trying with a Ultrasonic sensor for my school project. I used below code and did the wiring correctly, but it give Distance 0 all the time, then I...
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Using RCtime with Potentiometer
I am using rctime (resistive/capacitor) to read values from a 10k linear potentiometer like so; void loop() { Serial.println( RCtime(sensorPin) ); delay(10); } long RCtime(int sensPin){ long result =...
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Line following using QTR-8RC
I want to start by saying that I am really new to all this electrical stuff and any advice would be greatly appreciated. So, I am building a line following robot with the following components: 4...
View ArticleSourcing Industrial keypads to work with Arduino
I am not sure this is the correct category, but I am looking to source an industrial keypad (either 3 x 4 or 4 x 4) that will work with Arduino. I intend to connect it to a I2C bus through a I2C...
View ArticleSmartUltrasonic – Predictive Non-Blocking Ultrasonic Sensor Library with...
Hello Arduino Community, I would like to share a library I developed called "SmartUltrasonic" – a non-blocking and intelligent ultrasonic sensor library designed to improve the reliability and...
View ArticleESP32 with MPU6500
I have an ESP32, which works fine with some test code. I have some EMU6500 boards. The chip on them is marked as MP65M, which fits with them being 6500s as claimed. I can't get them to talk. I have...
View ArticleAbsolute wet pressure sensor
Hi im looking to do some pressure waveform simulations with a water pump. Ive been looking for small wet pressure sensors for my setup but cant seem to find any. Would anyone have any suggestions...
View ArticleLong wires with sensors and arduino
my requirement is interfacing the sensor such as wcs1700(current sensor) with arduino here the distance is 10mtrs long so which kind of wire is suitable to avoid noise ,and voltage drop 6 posts - 4...
View ArticleConnecting a SparkFun PPG to an Arduino
#include <Wire.h> #include <SparkFun_Bio_Sensor_Hub_Library.h> SparkFun_Bio_Sensor_Hub bioHub; void setup() { Serial.begin(115200); Wire.begin(); Serial.println("Initializing sensor...");...
View ArticleATMEGA2560 and ADS8568
Hi Has anyone been able to interface via SPI an ATMEGA2560 to an ADS8568 ? In my current application, the ADS8568 is layout to operate in serial mode. Until now I have been unsuccessful in getting...
View ArticleMarble thickness sensor
Hi there, We need to measure the thickness of a marble slab and we wanted to know what kind of sensor to use with Arduino. We then thought of using Arduino OPTA. The marble slabs in our case can be 2...
View ArticleConnection of LEM LA 25np
I need help to in the connection of Current Transducer LEM LA 25np. How to wire the 10 pins of the LEM LA 25-NP, do I use only one pair (like Pin 1 and Pin 6)? Can I leave the others unconnected?...
View ArticleProject Update and Sensor Help
Hello Everyone, Recently, I made a post regarding a CO2 Sensor with an Arduino MKR Zero kit and asked about calibrating the device. It was a success and thank you to those who responded so quickly....
View ArticleMeasuring current with zero touch
I would like to measure current that flows through a wire. And have an analog input on an Arduino tell me what the current value is. I would like a "no touch" approach to avoid warranty issues, I'm...
View ArticleSourcing for Class 2/3R laser sensor
Hello, I'm looking for Arduino-compatible distance sensors. Specifically, I'm interested in sensors that can accurately determine the point of measurement — knowing exactly where the distance is being...
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One wire sensor data gets weird when I open the Arduino's serial monitor
Hey guys, I am recently using Arduino to test a one wire protocol temperature sensor chip. I built a breakout board based on this chip and wrote the related Arduino library. The example code is to get...
View ArticleDIY capacitive moisture sensor ESP8266
Hello, trying to develop a simple capacitive moisture sensor with two parallel strips of aluminum and hook it up to my ESP8266. Have made the circuit work with a 10uF capacitor but I get no reasonable...
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BNO08X not detected – ESP32
Good afternoon, A newbie question I have been unable to resolve at all. I have the following setup: ESP32 DevKit v1. BNO08x (GY-BNO08x). 128*64 OLED monitor. The monitor only works in SPI mode. Button...
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ESP32 WROOM-32 + BNO08x IMU (GY-BNO080) Fails to Return Readings — I²C Setup...
Hello everyone, I’m working on a VR project and need help getting sensor data from the BNO08x using an ESP32 Dev Board over I²C. Hardware I’m Using: BNO08x IMU (GY-BNO080/BNO085 breakout) Amazon Link...
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