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votes
1answer
39 views

Trying to read different gas levels with MQ2 Gas Sensor

I found a link on how to connect MQ-2 Gas Sensor to Arduino Uno. http://electronicsprojectshub.com/how-to-connect-mq2-gas-sensor-to-arduino/ After I bought all the parts and tried it out, the sensor ...
0
votes
0answers
28 views

Check if the fingerprint exists and enroll with it? Adafruit_Fingerprint.h

I need to verify a fingerprint before being registered, but I have to put the finger 3 times on the finger sensor, which I prefer to do it just twice. The verification is ok, but I don't understand ...
0
votes
0answers
172 views

Using the Broadcom AFBR-S50 with Arduino

I'm trying to interface with a Broadcom AFBR-S50MV85G ToF sensor over SPI using an Arduino, which is complicated by the fact that the provided library and reference application is written for Cortex ...
0
votes
1answer
239 views

Not able to find right library for MPU9250

I am using an Arduino Uno and learning to use the motion sensor. Currently I was not able to find the library which looks simple and would like to get your suggestion. I found this https://github.com/...
0
votes
2answers
260 views

Arduino library redeclaration error

This is my first time here and I hope someone can be of help! I'll try to keep it as concise as possible. So I have two sensors/modules, 1 is an LCD screen from elecrow and another is the DS1307. ...
0
votes
2answers
225 views

My Ultrasonic sensor is only showing 4cm range?

I am using an ultrasonic sensor SR04 with Arduino Uno and a sample program which I got from the library. However, my output reading is only 4 cm even when there is no object in front of it. I even ...
0
votes
1answer
71 views

MAX6675 gives a climbing reading

I am using a MAX6675 board and a k-type thermal couple to measure temp. The problem is even when running the example the temp value keeps climbing. MAX6675 test 27.25 C = 27.25 F = 130.10 109.00 C = ...
0
votes
0answers
227 views

MPU9250 library exposing raw values

I'm looking for a library which would allow me to read the MPU9250 data without having to deal with float. So far, I have found 3 libraries: FaBo_202_9Axis_MPU9250 MPU9250_asukiaaa SparkFun_MPU-...
0
votes
0answers
2k views

Using Capacitive Sensing Library with a 74HC4067 multiplexer

I'm trying to use the Capacitive Sensing Library by Paul Badger in conjunction with one or more 74HC4067 multiplexers to achieve a lot of capacitive touch inputs. I came across this youtube video ...
0
votes
1answer
182 views

Arduino Gesture Sensor error:No such file or directory

I cloned https://github.com/sparkfun/APDS-9960_RGB_and_Gesture_Sensor and copied the libraries into the Arduino libraries folder. I then launched Arduino and selected the example. I opened the file ...
1
vote
1answer
12k views

Arduino Uno Sensor DHT11 Failed to read from DHT sensor

I get this error every time. I used the DHT tester file from this library. Which gives me an error. And then I realized that in my code Arduino recognizes only the readTemperature function, not ...
3
votes
2answers
777 views

Replace Wire library with TinyWireM

I want to integrate Pololu's vl53l0x Time of Flight distance sensor into a project of mine. They created a library to interface with the vl53l0x over I2C, which works great on my Uno. The only problem ...
1
vote
0answers
101 views

Teensy and MS5803 sensor

I'm trying to use the MS5803 pressure sensor with a Teensy 3.2. Compiling the Sparkfun, or other, libraries, however, results in no output. Can you provide guidance on how to modify the libraries to ...
-2
votes
5answers
3k views

BH1750 Light sensor always giving output as 54612lx

urgently need some inputs, Connection: VCC-5v GND-GND SCL-SCL(analog pin 5) SDA-SDA(analog pin 4) ADD-NC or GND Code pasted below used library from GIT : https://github.com/claws/BH1750 #include &...
0
votes
1answer
152 views

Querying streaming sensor data on the Arduino board

I am new to Arduino and this forum, so please forgive me if I am asking something really trivial and stupid. I have an Arduino board which collects sensor readings from an MPU6050 sensor (...
10
votes
1answer
8k views

Emulating 1-wire device(s)

What I want to do is make a ATTiny IC become a slave on the 1-wire bus, with its own S/N and command list for its specific functions. What I want to know is if I can use the one wire library from ...
3
votes
1answer
326 views

NodeJS (Galileo-IO) + Arduino sensor library

I've done some basic apps with NodeJS firmata where I can connect to my Arduino Uno and do the basics like reading a pin or doing a servo write. I'd like to go further and play with some different ...
0
votes
1answer
6k views

TCS3200 color sensor not reading with delay lower then 4000 ms using TimerOne.h

I'm trying to get the color sensor TCS3200 to give color values with a delay lower than 4000 ms. I've found a library to interface the TCS3200 from this link. I've modified the code to serve my ...
7
votes
1answer
3k views

Why does increasing resistance make a capacitive sensor more sensitive?

From the Capacitive Sensor Page on the Arduino website, it states the following: The capacitiveSensor method toggles a microcontroller send pin to a new state and then waits for the receive pin to ...