Photo resistor 5 or 3,3V ESP32
Hi Hopefully a simple question. On my system I have both 3,3 and 5V. Uses ESP32 WROOM 32 I want to add a photo resistor to the system, GPIO26. My fist thought was to use 5 v and in series a 4,7kOhm...
View ArticleWhen connecting A4 and A5 to MPU-6050 Serial Monitor Stops Working
The Problem: The serial monitor stops printing data immediately when the MPU-6050 SDA and SCL pins are connected to the Arduino. Here is the schematic. 3.3V --> VCC GND --> GND A5 --> SCL A4...
View ArticlePin (10, 11, 12) conflict/collision
I try to use poor atmega 168 mini for recording data from GY521 on SD memory card. The pins 10, 11, 12 are used by USBasp programmer, the same pins are used to communicate with SD memory card. The pin...
View ArticleNon-linear to linear transformer
Hello, for a project I plan to measure force with moderate accuracy using the RP-S40-ST force sensor; however, its response is not linear and has a rather steep curve that does not allow for precise...
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DS18B20 temperature sensor was showing bad readings. They are above 900, i...
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View ArticleMPU6050 Acts Strange When Roll Limit Is Exceeded
I am working with mpu6050 in my project and my axis limits are -180 degrees to +180 degrees. Only when doing the Roll movement reaches -180 or +180 degrees, (when it is upside down) other values (Yaw...
View ArticleArduino nano ble 33 vs UnoR3 I2C issue
I have a sensor when connecting to UNO in I2C it is working fine, but when connecting to Nnao ble 33, after uploading the code, the board gets disconnected suddenly and needs a factory reset. My...
View ArticleError while uploading data on firebase using esp32
Hi everyone, I'm working on a project where I have multiple sensors connected to an Arduino Uno. The sensors I'm using are MQ5, MQ7, MQ135 (for gas detection), DHT11 (for temperature and humidity),...
View ArticleSensitivity of MPU6050 and communication between Arduino and Processing
Hello, I am trying to create a serial communication between Arduino and Processing for the MPU6050 acceleration sensor. When I run the code in Processing and my UI shows up, I see that the MPU6050 is...
View ArticleDS18B20 on 3.3v logic
There was a thread on this group regarding DS18B20 and 3.3V logic. I cannot add comment there (the thread is closed) however google still points there anyway. It might be good to reopen it or to...
View ArticleReceiving data from 3 sensors
Hello, I am working with Arduino Uno and Mega for a project assignment. In this study, I aim to get movement data from the MPU6050 sensor, stress data from the GSR sensor, and pulse and SPO2 data from...
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MD-PS002 with HX711 for TPMS
hello everyone, I'm having trouble using the MD-PS002 pressure sensor. I have connected the sensor using the HX711 module to be able to strengthen the reading results from the sensor because the...
View ArticleCan´t read FC-28 data sensor using ESP32
I use the FC-28 sensor and I can't read data when using it in my main code, but in a sensor-only code it works great. Does anyone have an idea on the issue? #include <Arduino.h> #include...
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EC Meter Analog Conductivity Meter, incorrect values
Hi guys, I have buy this product on Aliexpress : EC Meter Analog Conductivity Meter And i have utilized the code present in description in product ( I attached the code ). I see the value of analog is...
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Arduino 3x4 Keypad returning random values at random times
I am using an ELEGOO MEGA R3 Board with a 4x3 keypad. I want to return the key pressed and activate a specific function depending on the key. But, when I run the code I only receive 4's and 1's at...
View ArticleEquações matemáticas
Estou usando uma equação com os dados de um sensor de umidade e temperatura, porém observei que ao aplicar operações matemáticas utilizando os dados como variáveis, o sistema não utiliza as casas...
View Article...Configuration of chinese ATGM336 GNSS
Hi... Just to help users here on the ATGM336 GPS... I tried to configure the popular (e.g. cheap) ATGM336 GNSS/GPS receiver, but most information is in Mandarin... Finally, after online translation...
View ArticleATMEGA 2560 Pots Hooked Up to the Analog Pins not reading
Hello All, I have two 10K pots hooked up to pins A0 and A1. They used to read nicely and smoothly. They gave me a brightness level for some LEDs I am driving. The LEDs are being driven just fine. The...
View ArticleWaypoint driven car
I'm working on a small robot car that can drive from room to room and stop at a predefined terminal. I'm trying to build a real life drone video game. I started out with an Arduino connected to a 3...
View ArticleIR not working after using servo
I'm using DeMos D1 R1. the code is working great without a servo.attach(pinNumber), but with the ir is not printing. this is the working code: #include <Servo.h> #include <IRremote.h>...
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