| CARVIEW |
Select Language
HTTP/2 200
date: Sun, 27 Jul 2025 12:38:20 GMT
content-type: text/html; charset=utf-8
content-encoding: gzip
cf-ray: 965c3174293225e0-BLR
cf-cache-status: DYNAMIC
cache-control: private
set-cookie: prov=a97d7d64-58f2-40e9-8326-88f25b2d1708; expires=Mon, 27 Jul 2026 12:38:19 GMT; domain=.stackexchange.com; path=/; secure; httponly
set-cookie: prov=a97d7d64-58f2-40e9-8326-88f25b2d1708; Path=/; HttpOnly; Domain=stackexchange.com
set-cookie: __cf_bm=OWyWxebxg4XVXZVhj_MLxVc2LkMmW5Pd7JapSAnUZHY-1753619900-1.0.1.1-_DJflkBXnVHvOUgBbKXJjMtyZJVxmzxlltp58pbLw.BCUs7ZLLVafBsz7gKjF.Byh4LurKW9hqVa9_e6AZCOAGZY.00mv5c0t6IgClv7_M8; path=/; expires=Sun, 27-Jul-25 13:08:20 GMT; domain=.stackexchange.com; HttpOnly; Secure; SameSite=None
set-cookie: _cfuvid=p6t2I5TSJ4mYMxKadsZzWyOoGjTRBmUfr5wMGSJNwJ8-1753619900072-0.0.1.1-604800000; path=/; domain=.stackexchange.com; HttpOnly; Secure; SameSite=None
strict-transport-security: max-age=31536000; includeSubDomains
vary: Accept-Encoding
content-security-policy: upgrade-insecure-requests; frame-ancestors 'self' https://stackexchange.com
x-clacks-overhead: GNU Terry Pratchett
x-frame-options: SAMEORIGIN
x-request-guid: 5c3540b5-da70-4ce0-85c2-e92be0767a67
x-worker-origin-response-time: 491000000
x-dns-prefetch-control: off
server: cloudflare
Newest 'sensors' Questions - Arduino Stack Exchange
Skip to main content
Stack Exchange Network
Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Visit Stack Exchange
Teams
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
Learn more about TeamsQuestions tagged [sensors]
Use this tag for questions about selecting, connecting, using, and debugging sensors.
1,256 questions
- Bountied 0
- Unanswered
- Frequent
- Score
- Trending
- Week
- Month
- Unanswered (my tags)
-1
votes
1
answer
102
views
MFRC522 RFID RC522 Only Works Sometimes – Unreliable Detection Issue
Problem Overview
I’m using an MFRC522 RFID module with an Arduino Uno, and it only detects RFID tags sometimes. The behavior is inconsistent—sometimes it reads the card instantly, and other times, it ...
0
votes
1
answer
56
views
Connecting two Arduinos via BLE 5.0
I have this issue where I'm transmitting sensor data from Nano Sense Rev 2 (transmitter) board to Nano 33 BLE rev 2 (receiver). The receiver keep failing to detect and connect to the transmitter and ...
0
votes
1
answer
94
views
ESP32 pressure sensor readings (RFP602)
I have two RFP602 sensors that I use.
One connected to GPIO2, the other to GPIO4, each connected to a 1Mohm resistance.
The sensor connected to GPIO2 reads the data how I want it, I have to press a ...
-1
votes
2
answers
112
views
50 Hz powerline noise using Arduino and mikroe ECG 2 (ADS1194)
I am trying to take ECG measurements using the Mikroe ECG 2 (ADS1194), connected to an Arduino Uno via an Arduino Uno Click shield.
I am able to measure the ECG, and can read the heartbeats somehow in ...
2
votes
1
answer
152
views
Custom (external) reference voltage for ADC: is there a lower limit?
I'm reading an analogue oxygen sensor (SGX-4OX) with a Nano Every (ATmega4809-based). We're seeing up to about 60mV* in ambient air (it will reduce as we purge with nitrogen), and the ADC is 10-bit. ...
1
vote
1
answer
124
views
ESP32-S3 Does not read BME680 Data
I build a PCB using ESP32-S3-WROOM-1-N16R2 Controller. I programmed a BME680 sensor with this MCU. My pinouts are,
BME_SCK 38
BME_MISO 19
BME_MOSI 15
BME_CS 5
This is my Arduino code,
#include <...
1
vote
2
answers
216
views
Why is my BME280 sensor returning 0 for all data values?
My BME280 is returning 0 for temperature in Celsius, 0% humidity, 0.00 pressure (hPa) and 44330.00m for altitude. I am connecting it with I2C on a Raspberry Pi Pico and everyone on the team has ...
0
votes
1
answer
130
views
How to control a stepper motor using an absolute position sensor which has an error band?
I am using Feather M4 express development board with DC Motor + Stepper FeatherWing and Ethernet FeatherWing stacked on it. The idea is to read the target position from the UDP from 0 t0 360 degrees ...
-1
votes
1
answer
51
views
How can I downsize protruding pins from sensors to so I can use a smaller housing?
I'm trying to create a system where I continuously measure color data from a fluid. I've created a 3D-printed box where the pins fit; if they're configured in their out-of-the-box arrangement, what ...
2
votes
1
answer
163
views
Software serial communication problem between ESP8266 and Arduino Mega for plant monitoring system (using Blynk IoT)
We're using the ESP8266 to receive data from the Arduino Mega board, where our sensors are connected. Supposedly, our ESP is connected to the Blynk App. However, the values showing up in our dashboard ...
1
vote
0
answers
89
views
Help with combining sensor codes
I'm trying to combine 4 sensors' codes into one to display on the serial monitor: MAX30205, MAX30100, AHT20, and ENS160. I'm using the Adafruit ESP32 Feather V2 board. Here are the libraries that I've ...
0
votes
1
answer
91
views
Keypad library isn't working or I am wrong somewhere [closed]
I am using PICSimLab to simulate a keypad. The configuration of the keypad is as shown in the picture:
and the code is:
#include <LiquidCrystal.h>
#include <Key.h>
#include <Keypad.h&...
1
vote
0
answers
121
views
KIE-TS-300B turbidity sensor not working
I'm working with a clone Arduino micro board. I've got the color sensor up and running fine. So the problem isn't the card.
I'm using the example code, just to try out the module:
// the setup ...
0
votes
1
answer
40
views
Arduino Uno/Nano + ML
I couldn't find any clear answers elsewhere, hence I'm asking here.
I have a TensorFlow/TensorFlow Lite model which I have already trained on some sensor data.
Now, how can I utilize this model on my ...
0
votes
1
answer
42
views
Arduino used as a multi-sensor controller, then sending results to a laptop to post on a web page
We are a non-profit group, we run a salmon rearing pond on Lake Michigan. We are upgrading our equipment that is over 50 years old with monitoring sensors.
We are adding 9 temperature, 5 oxygen, 2 air ...
- The Overflow Blog
-
-
- Featured on Meta
-
-
Related Tags
arduino-uno × 502
programming × 90
arduino-mega × 80
arduino-nano × 69
serial × 61
temperature-sensor × 58
i2c × 57
esp8266 × 53
power × 49
arduino-ide × 40
analogread × 36
led × 34
c++ × 33
pins × 32
esp32 × 31
interrupt × 27
servo × 27
accelerometer × 26
current × 24
ir × 24
robotics × 23
motor × 22
library × 21
code-review × 21
hardware × 20
more related tags
Hot Network Questions
- Early Sailing days in September 1066... Could Harold defeat William at Hastings, if it happened before Stamford Bridge?
- How to extend an MDF shelf?
- Moving multiplying cells away
- Shared-Memory Queue Implementation in C
- Why did the Holy Spirit send Jesus to the wilderness to be tempted by Satan?
- Why are police personnel of all ranks called officers?
- Statistics – Linear Inference – What is the moment generating function of non-central t-distribution?
- Can expanding foam provide interior strength for a large model?
- How do Japanese people understand the reading of a single kanji with multiple readings in their everyday life?
- How much of a really big a spaceship could a nuke take out?
- In Jurassic Park, is the lysine dependency intentionally fake (in-universe)?
- Are you required to protect trade secrets revealed to you even if you didn't sign an NDA?
- What is the weight of holy water?
- rock paper scissors game with randomized system choices. NOT using rnd()
- What is the meaning of 'Tel.......,qui......'
- Lower bound on ratio of expected maxima of i.i.d. samples from distribution on [0,1]
- How can I turn the text in a PNG file back into text layer?
- Rec Letter from Professor (who I haven't done research with) or from Work Supervisor
- When was the last time all humans were on the ground not in the air?
- Alternative to tedious assert-rewrite for trivial operations?
- Will an error in two of my published papers affect my PhD thesis evaluation?
- Did Denmark report that 64% Palestinian refugees from 1992 received serious fines or jail time?
- Book recommendations for theistic books about God's existence
- When did the OEIS get even better?