Arduino using a button to switch on and off an IR laser
Hi folks, just needing some help with this code, I'm trying to make it so when I push the button and it counts up it will turn on the IR laser and will stay on until the button is pressed again where...
View ArticleProgramming problems
Hi my friends, I am new on robotics and I really need your help. I have trouble with programming, here is the code:#include <Servo.h> // Define servo objects for 4DOF arm Servo servo1; // Base...
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Connect esp32cp2102 to pH sensor
Hello, I'm new to programming, and I have a question regarding a pH sensor and my ESP32. If the sensor signal is up to 5V, but my ESP32 only reads up to 3.3V, how do I make my ESP32 read the entire...
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Request for Assistance with Sphygmomanometer Readings Using HX710B Sensor
Dear friends, I am developing a sphygmomanometer using the HX710B sensor and need your help with the data readings. My issue is that the sensor only measures up to 60 mmHg; when the pressure exceeds...
View ArticleDS18B20 (Dallas temperature sensors) and strong EMF emissions?
Hello there! this is a post, which is not actually asking for a solution on a particular specific problem, but actually, asking for your opinion on something I have experienced. I have had a linear...
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3 wire bathroom load cell connect to HX711 and to esp wroom 32
My thesis project is to make a water bottle mount that measure the mL inside of a 32oz. For that, is it possible to connect 3 wire load cell to HX711? Usually a single load cells (the rectangular one)...
View ArticleMAX6675 with K Type Thermocouple
Schematic_Fryer_2024-09-16.pdf (67.6 KB) I'm working on a project using a K-type thermocouple with an MAX6675 module. I'm powering the PCB with an external SMPS (here's the link for reference:...
View ArticleIssue with myoware
Hi I'm using the new version of myoware and esp. My question is that my graph is totally inverse. I mean 4096 is on level 0 and when there's a pic for the muscle flexion, the graph draws the line...
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Calibration error in ZMPT101B i didn"t the sine wave using arduino
Hi everyone Initially i CALBRIATE the value in first step.. so didn"t get proper sine value while i turning 100k pot also Connection Arduino to zmpt101b 5V TO VCC A1 TO OUT (I Checked here in...
View ArticleGT911 touch module not reading zero coordinates
Hi, I'm using the test example of the GT911 library: https://github.com/TAMCTec/gt911-arduino on my ESP32_8048S043 with 800x480 resolution, the code works and there're readings on the serial monitor....
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RS485 Soil NPK Sensor Calibration
Hi everyone, I'm currently working on a project that involves using an NPK sensor via RS485 Modbus communication. Based on the sensor's user manual, the calibration formula for the sensor is Y = AX +...
View ArticleUnable to send request to roboclaw when integrating an accelerometer
I am creating an autonomous drive bot that contains an MPU6050, a 3x4 keypad, a dual channel roboclaw 2x60, and an Elegoo Mega 2560 R3. The keypad is wired to pins 3-9, the MPU6050 to 20 and 21, and...
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Arduino nano 33 ble rev2 magnetometer static reading
Have a nano 33 ble rev2 and am trying to output the magnetometer data as per the guide by arduino (https://docs.arduino.cc/tutorials/nano-33-ble-rev2/imu-magnetometer/) However, when serial print the...
View ArticleParallel Arduino Mega2560, transmitting Temperature to display on LCDs
Hi, sorry if i have chosen the wrong category, I have 2 boards connected in parallel both with an LCD connected, my master board can read and write the temperature to the LCD connected but i cant seem...
View ArticleEMG Sensor Basics
Hi all - I'm interesting in monitoring some EMG activity. My basic understanding is that most of the EMG "add-ons" out there are essentially just high-powered amplifiers that get connected to a...
View ArticleRc522 disable when bike starts or horn blowse
When I was start bike or blow horn then rc522 was disable I was trying shielding or use dc to dc isolator to isolate Arduino and sensor from battery of bike and also use inductor or x2 capacitor but...
View ArticleVoltage logger using Voltage Divider
Hello, for an investigation I am using an Arduino Uno WIFI r4 to log the voltage of a 10-20kV circuit. This is for an investigation into EHD thrusters. I am using a voltage divider with an R1 that is...
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PIR Sensors won't reactive after being activated
Hi all, I'm trying to create an installation that has two audio tracks playing simultaneously and when activated by a pir sensor, they switch tracks. I have two DF robot MP3 players, each...
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PM2.5 planttower/adafruit - arduino uno r3
Hi I am trying this code here [Interfacing PMS5003 PM2.5 Air Quality Sensor with Arduino] to work on PMS5003 sensor but the serial monitor is showing some crazy shit output i've never seen anything...
View ArticleNeed to find a part
I am trying to create a 3D model of the flight path of a 3D plane. I am trying to find a part that can do all of these things on its own and is relatively small and light (because the plane is not...
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