Questions tagged [arduino]
For questions related to the IoT applications that use Arduino. If question is about software or hardware issue with Arduino, consider whether asking it at Arduino Stack Exchange would be more appropriate.
127
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Can I disable read access to an SD card by removing the read wire? [closed]
I want an internet connected host, such as a Raspberry Pi, to be able to write uploaded files to a directly-connected SD card, but I don't want it to be able to read the card. This is for protection ...
- 101
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49
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Mini weather station project not working
I have been trying to do this project for 2 weeks. The project is about mini weather station. It uses esp8266, DHT11 sensor,BMP180 sensor and FC 37 rain sensor. I have taken reference from the ...
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2
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2
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88
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wireless moisture data transmission
I am mainly from software background with very very basic level of electronics/microcontroller knowledge.
I recently did a small IoT project for moisture/temp detection following this tutorial
At a ...
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1
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154
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Arduino MKR GSM/NB + CAN + SD Card
I have some questions about a new Arduino project I'm starting:
Since Vodafone (Italy in my case) is shutting down 3G in 2021 (keeping 2G/4G up apprently), is ARDUINO MKR GSM 1400 still valid in next ...
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4
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1
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253
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How to get stepper motor to rotate smoothly and continuously?
I'm trying to build my own motorised roller blinds based off this project. It uses the Stepper_28BYJ_48 library.
The problem I'm having is that the motor is either very slow and jittery, going forward ...
- 2,283
0
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0
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333
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Send data from GSM module to cloud server like Firebase
I am trying to search for anything to send my sensor data from Arduino + GSM SIM900A to a cloud server, preferably Firebase. Does anyone know how can I achieve this operation to Firebase or any other ...
- 171
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1
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129
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IoT Dashboard for customers (data comes from Arduino)
I push my sensor readings from product A, B, C, D to an online cloud provider.
Then my customer (call him E) needs to access all these sensor readings and make a dashboard for his customer X, Y Z.
...
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304
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Best way to store the data received from aws iot core
What I am trying to achieve is that I have an Arduino base which periodically uploads data to AWS IoT-Core. But I am looking for a way to store that data and make it accessible to my web application ...
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1
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345
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How can I increase the size of the receiving sms Buffer in GSM
Recently I am working on programming IoT Project, to receive messages from the phone. That part worked, but the problem that I am currently facing is that the message does not arrive fully because of ...
CommunityBot
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40
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Identify the ancient IOT hardware model and find out its driver
Found from the bottom of my gadget box, I am trying to use this board for my hobby project, but I cannot even remember what model it is.
Could anyone help please to identify the model of this board?
...
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743
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switching setDebugOutput off on esp8266
This thing is driving me nuts.
I tried to debug my MQTT secure connection on nodecmu. Following some post from year 2015 I was switched on debugging output with Serial.setDebugOutput(true). Now I ...
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2
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1k
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Remote Firmware Update Arduino Nano
I am working on Arduino Nano (32Kb flash memory of which 2Kb used by boot loader, 2Kb SRAM, 1Kb EEPROM).
The micro-controller takes input from an electrical device via RS485 module and posts the ...
- 111
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2
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What is a good way for an IoT device to receive its network settings?
I'm in the process of building an IoT device using ESP8266. The device will eventually contain a couple of motors, and I would like to control these motors using MQTT. I would like to make the device ...
CommunityBot
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How fast can I send data to firebase from nodemcu 1.0?
I was sending some variable value to the firebase database I have created: how fast can I send it? What would be minimum time interval between two values nodemcu can send and fire base can receive? I ...
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2
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77
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Where to find descriptions of the example ESP32 sketches in the Arduino IDE?
I chose this one at random
https://github.com/esp8266/Arduino/blob/master/libraries/ESP8266WebServer/examples/HelloServer/HelloServer.ino
but looked at the code of others & hope that there is ...
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7
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981
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How to detect desk occupancy in office
I'm working on a POC to try and find desk occupancy in an office. The aim is to identify which desk is occupied and how many are free and where are the free ones. Also I would like to identify who is ...
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Not getting data from nodemcu to the firebase
I've done almost everything to get the data from nodemcu but nothing happened.
I tried by changing the fingerprint.
I have also used project secret and copy it in FIREBASE_AUTH part.
I also ...
- 4,872
1
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1
answer
103
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Cayenne IOT widgets greyed out using ESP8266 NodeMCU-12e
I'm using an ESP8266 NodeMCU-12e, connecting to Cayenne IOT platform. Most things work fine (I can update most widgets using virtual channels), but some widgets are unavailable (greyed-out), or simply ...
CommunityBot
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2
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0
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55
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Custom flashed Sonoff basic doesn't work when connected to main power
I flashed a sketch to a Sonoff basic switch R2 through Arduino IDE (with FTDI).
Flash is completed and Sonoff runs the sketch successfully.
The code is just a typical setup for making esp8266 a soft ...
- 346
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2
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2k
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How many local IoT, MQTT devices on a single WiFi router?
I am working on a dedicated WiFi network of real-time, IoT devices communicating with MQTT. Messages are very short, approximately 100 bytes. There will be at least 85 devices on the network.
IoT ...
- 2,283
2
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1
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341
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Building bidirectional people counting sensor
I am trying to build a people tracking sensor for counting the traffic of a specific area (building or shopping street). I need to detect people coming in or out of a room, also if two people are ...
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1
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60
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Motion detector system that can be flashed remotely
I want to build a motion detector that performs a similar service to security
services, which notify me upon intrusion and provide video feed. The other main
requirement is that I can update the ...
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1
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What is the difference between Particle Photon, Argon, Xenon, Boron, etc?
For one project I have used the Particle Photon, an IoT device similar to Arduino, and am considering changing to a different device for another project (a motion detector that has its own question). ...
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678
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What are lower latency alternatives to using MQTT brokers with the ESP8266
I'm experimenting with the nodeMCU board attempting to proto type out an IoT project. My first iteration involved using an MQTT broker to send messages between my computer and the board. Due to the ...
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54
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Plotting data from arduino via server [closed]
I'm sorry if I'm not posting this question on the wrong part of stackexchange, but I have no idea where to go with my needs.
I have an arduino sensor that meaasures a quantity every day. The goal is ...
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1
answer
66
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RFID Specifications and Project Recommendations [closed]
I'm very new (one day) to the IoT world. I've got a specific project I want to tackle, as a intro to IoT, but I'm also open to general advice on getting started. In summary, I want to know if my ...
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3
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1
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265
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How do IOT platforms like Blynk, ThingSpeak etc. communicate with hardware (e.g. ESP8266) without port forwarding?
I use port forwarding if I want to access my local server NodeMCU from internet. However if I use IOT platforms like Blynk, ThingSpeak... then I dont need to care about port forwarding. We can access ...
- 12.6k
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188
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ultrasonic sensor reflecting waves in water or not [closed]
When an object is kept opposite to an ultrasonic sensor, it reflects the waves. In case the object is water, does it reflect or not? How does one know?
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What is the library to be used to implement CoAP in ESP8266?
I am using Arduino IDE to program my ESP8266. I would like to send data from one ESP8266 module to other. So I would like to use CoAP for this communication. Is there any standard or good library to ...
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1
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74
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Remote sensor cloud connection
i'm just starting out in Arduino, IoT etc; I was given the Elgoo Uno R3 Arduino starter kit at the weekend and i've been trying to soak it up.
I would like to make a number of sensors for my van, ...
- 11
3
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1
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79
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How to store non-volatile data (an ID) inside a passive physical object?
I'm starting a project that evolve some kind of multiple small physical IoT objects that can be plugged dynamically to a wood board and trigger some leds.
My question is so simple that I'm afraid of ...
- 12.6k
2
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2
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317
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IoT and middleware
We are building a solution as described below:
Arduino-based sensors read data and send it to Raspberry every second.
Raspberry Pi processes these data and then communicates with a backend system ...
- 4,872
4
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1
answer
79
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For my "switch on light with clap project " will sound sensors detect other sounds other than a clap and switch on the light?
I am just a high school student who is trying to self-learn for my IoT home automation projects.Please excuse me if this question sound silly to you.This time I am working on this "clap to switch on ...
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4
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2
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111
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Building a special effects rig
I'm not sure if this is the best place to ask but I will give it a try. I build mechanisms that are used in commercials, tv shows, window displays, multimedia art etc. They generally involve ...
- 473
3
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1
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125
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Smart gate - where to start?
I have this idea of writing an app/something to make the gate, that we have in front of our house, smart. But I just don't know where to start.
I assume that the gate uses IR because we have remotes ...
- 12.6k
4
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0
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293
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Sending temperature sensor's data to Kaa-IoT platform via 6LoWPAN
I want to set up some sensors in different places, which are wire connected to my development board, Raspberry PI or Arduino.
I'm going to send the data wirelessly but without using WiFi protocol, ...
CommunityBot
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6
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2
answers
2k
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Syntax for using HTTP GET with ampersand and float
I am currently working on a wireless gardening project and quite new to this field.
My sht10 sensor is connected to Arduino Uno and GSM AT commands is used for wireless communication. I am using ...
- 3,110
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0
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728
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Xamarin.Forms to ESP8266 Wifi moduleConnection [closed]
Am build new application for ESP8266.
Then how can i connect my xamarin.forms application to esp8266
any reference and documentation for this.
Already referred WIFIManager library in android many of ...
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1
answer
47
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Alternative way of developing own Hardware [closed]
Developing your own hardware is expensive. Our company has few requirements for our hardware. Cellular communication, GPS transmission and capturing acceleration.
Since we need only max to 1,000-5,...
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3
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0
answers
106
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run arduino code without a usb cable connected to a computer [closed]
I am using sim7000E with arduino uno and i want to be able to run it without a computer. I tried to connect it only with the power supply with the correct power and again it doesn't run my code. Does ...
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288
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Arduino MKR 1300 LoRa library and RTC problem
I have a really weird problem with the Arduino MKR 1300 and the use of the RTCzero library. Simply put when I use both of them the data does not get sent and I have no idea why. The alarms when not ...
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2
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142
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IoT app and software [closed]
I'm new to IoT and this is my first project, I didn't find the answer to my question anywhere.
Is there an app for Android and Windows software that can control an Arduino device from different ...
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0
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177
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SCT-013-000 with Arduino MKR 1300
Has anyone tried to use this particular sensor (SCT-013-000) with that particular Arduino (MKR 1300)? Cause I keep getting different results when connecting Arduino UNO and then trying the MKR, both ...
- 7,793
3
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156
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Does MQTT inresponse can cause a reset due to network activity?
Setup description:
I have 8 ESP8266s running an Arduino code to control windows shades up and down using relays, local switches and MQTT for remote operation, which work OK for the past few weeks.
...
- 7,793
8
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2
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344
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Make Embedded Board NTP Server for Arduino boards in the subnet
I have an Embedded Board where the distribution on it is a custom Linux Distribution based on Yocto.
I have added ntp and via ntpd I will sync time with the common ntp pools either via UMTS 3G dongle ...
- 1,558
2
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2
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247
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Scalable Arduino ESP32 IoT project ( with lots of users )
I'm planning to create a Arduino device that measures distance, and sends the data to AWS IOT via WIFI . After that i want to see the measurements on an Android or iphone App.
How can i make my idea ...
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0
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198
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Control GPIO of ESP32 using Bluetooth [closed]
I’m using ESP32 to control relays using MQTT ( both over Arduino and MicroPython ).
For special cases, and not for everyday operation, I wish to control a specific GPIO over Bluetooth ( a reset irq)....
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0
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65
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IoT hub on private network [closed]
I want to make a hub for file sharing in my private network like DC++.
Is there any library which I can use or do I have to develop it from start.
This can be developed for Arduino or Raspberry PI.
5
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1
answer
151
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Efficient Server- and Protocol structure for raspberry, smartphone and 3rd-party-device network
I am new to this forum and this field. I am looking forward to good criticism and tutorials/links/instructing suggestions to build a nice system with as less effort as possible while achieving all ...
CommunityBot
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3
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1
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831
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MQTT Library for Arduino using GSM
I am developing a vehicle tracking device.I want to send data to server through MQTT from my sim808 GSM module.But I couldn't find any good library of MQTT for Arduino. There are so much resources for ...
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