PIR sensor Working principles
PIR motion Detectioion sensor is usefull device in perimeter monitoring system it depends on calculation of what? Or what is its principal of working 3 posts - 3 participants Read full topic
View ArticleMQ4 Sensor with Arduino
Would anyone know if the MQ4 sensor is capable of detecting farts? 4 posts - 4 participants Read full topic
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Temperature is showing without any thermistor
Hot end temperature is showing without any thermistor. Attached photo is self explanatory. I'm using Mega2560 + Ramps 1.4 combination with Marlin-2.1.x. I have replaced ramps 1.4 to 1.6 and tried...
View ArticleLots of analog i/o required
Hi there I´m trying to make a big mold temperature controller, I´m wondering how is possible PID 96 heaters with an arduino? system is composed by 96 type J tc each input to convert to analog input...
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TMP36 best practices
I just tried using a TMP36 for the first time, and quickly found out the hard way that basic tutorials (even from high quality sources like Adafruit and SparkFun) that just tell you to slap it on...
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Adding sensors to complex Arduino nano Every bread board
Hello! I need help modifying an existing bread board set-up to add another sensor, because this is not my own set up, I am not sure what I can change or if it is even possible to change. Also any tips...
View ArticleNine Axis Motion Shield
Hello, I'm looking for general advice using the Nine Axis Motion Shield (or the BNO055). I am wondering about the calibration. There are four outputs about calibration status for the sensor: ( 0-3)...
View ArticleProblemas na Leitura de Cores com Sensores Ópticos TCRT5000 no Arduino Mega 2560
Olá a todos, Estou enfrentando dificuldades ao tentar ler cores (verde, branco, cinza, preto) usando sensores ópticos reflexivos TCRT5000 em um Arduino Mega 2560. Estou usando três sensores conectados...
View ArticleConverting Quaternions to Euler (Sparkfun LSM6DSV16X)
So I've got a Sparkfun LSM6DSV16X (6DOF IMU board with sensor fusion) and although the Sparkfun library doesn't seem to output the sensor fusion quaternions (as far as I've been able to tell from the...
View ArticleWorks in arduino IDE but does not work when implementing in cloud
I am trying to get the code below to work. It works flawlessly in the IDE. Does not work when using this cloud platform. Very simple test code to read analog values... void loop() {...
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Wrong reading of transducer voltage
Equipment: Arduino UNO 3, Adafruit SD shield Hi, This is my first Arduino project and I am bit confused with the results I am getting. I want to read the voltage from a transducer that is powered by...
View ArticleMQ-2 sensor confusion (possibly more)
Good day fellow Arduinerds, I have some questions on using MQ sensors. I purchased a lot of 9 MQ sensors from Amazon (MQ-2 thru 9 and a 135 sensor). I'm going to use the MQ-2 sensor as the example...
View ArticleHow to get raw values from the MPU9250 Magnometer sensor or "AK8963"
Hello everyone, for the past month or so I have been attempting to make a working and accurate IMU (Inertial Measurement Unit) using the GY-91 sensor, which packs the BMP280 and MPU9250 sensor into...
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How to use multiple MPU6050 with one Arduino board
I'm trying to get values from multiple MPU6050 gyro sensors with one Arduino board. I've tried I2C communication, but the two sensors are giving their values into one variable instead of the two...
View ArticleTaking every other pulse from a rotary encoder
Hey guys and girls, i have a general question regarding a project. I have a rotary encoder on a crankshaft to measure engine speed with 3600 increments per revolution. At 750 rpm that comes down to a...
View ArticleHw611 sensor with arduino nano
In file included from C:\Users\ciebe\AppData\Local\Temp\.arduinoIDE-unsaved2024524-7344-a1svhb.dy9v\sketch_jun24a\sketch_jun24a.ino:3:0:...
View ArticleInterfacing an Ultrasonic Sensor with Arduino
Hi, I am Jinnox, and I work as a Bolt Manufacturer in India. I'm trying to interface an HC-SR04 ultrasonic sensor with my Arduino Uno to measure distance, but I keep getting inaccurate readings. The...
View ArticleUnderwater Arduino data logger with DS18B20
Does anyone know how i can get a DS18B20 to this code? Now it can read and save the temperature from the RTC, but i want to read and save the temperature from a seperate DS18B20. Would be great if...
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Humidity / Temperature sensor failing startup
The image is of the wiring of my project The code i am using is below #include <LiquidCrystal.h> const int rs = 8, en = 7, d4 = 3, d5 = 4, d6 = 5, d7 = 6; LiquidCrystal lcd(rs, en, d4, d5, d6,...
View ArticleGY-87 angle drifts
Hey everyone, I recently purchased two modules, the GY-87 and the GY-521, both of which utilize the MPU6050. I have the following code, which I borrowed from Joop Brokking and made some slight...
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