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Questions tagged [raspberry-pi]

For questions related to using the Raspberry Pi in IoT applications or solutions. Questions about a software or hardware issue with Raspberry Pi are usually more appropriate at Raspberry Pi Stack Exchange. Programming language questions are usually more appropriate at Stack Overflow.

2
votes
0answers
16 views

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 ...
-1
votes
0answers
33 views

Fail to Read real-time data in node from neo-6m gps module in Raspberry pi 3 plus [closed]

I am using something like this in node js. And I am getting the correct lat lon details, so I am sure that gps device is connected properly to raspberry pi. const SerialPort = require("serialport"); ...
4
votes
1answer
51 views

How to add resistor between two connections on breadboard [closed]

I am trying to replicate a circuit-diagram for my Raspberry Pi and DHT temperature & humidity sensor. I noticed that the author of the tutorial added a resistor between two connections (see orange ...
1
vote
1answer
48 views

How to implement out-of-home when developing an IOT device?

I have a Raspberry Pi that tells you through web sockets and a sensor the amount of electricity you are spending in real time. I created an iPhone app as a front-end that basically just paints the ...
0
votes
0answers
39 views

Unable to configure nrf24l01+ with Raspberry Pi 3 B+

I have a new Raspberry Pi 3 B+ model. I also bought a few nrf24l01+ modules. I hooked up one of the nrf24l01+ modules to my RPi with these connections: RPi | nrf24l01+ -------|---------- 3.3 ...
3
votes
2answers
48 views

How to send data collected by two different sensors simultaneously?

I have two different sensors connected to my Raspberry pi and I have to send the data to other device. The transmission of data is through wireless network. I have been asked to send the data in ...
4
votes
2answers
63 views

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 ...
4
votes
2answers
69 views

Raspberry Pi emulate phone Bluetooth stack

I'd like to use my Raspberry Pi to emulate phone Bluetooth stack. I'd like to get it paired with car radio, simulate arriving/outgoing call, simulate SMS and the more alerts/notifications I can manage....
3
votes
1answer
60 views

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 ...
1
vote
0answers
30 views

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 ...
3
votes
1answer
56 views

Will my Raspberry Pi home automation hub be able to do all that?

I am setting up a DIY home automation, and just planning how my solution will look. I will have a Raspberry Pi 3 as the "hub" of the network It will run Node Red, MQTT (mosquitto), a DotNet website, ...
4
votes
2answers
181 views

Using Raspberry Pi as a Lora Node for a TTN setup

I already have a LoRa gateway that I made using a NodeMcu with ESP8266 and now I want to send data from a Raspberry Pi 3 through that gateway to the TTN. The first thing that I did was to connect ...
2
votes
1answer
36 views

publish image data to mqtt not showing

I am trying to publish image data to MQTT (CloudMQTT) with following code, but the data is not appearing on MQTT, don't even see any data on MQTT broker. import identity import json import paho.mqtt....
3
votes
0answers
69 views

greengrass ggc_user changeable? [closed]

While installing AWS IoT Greengrass for Raspberry Pi, there is a need to create ggc_user & ggc_group as mentioned in Greengrass developer guide step 9: sudo adduser --system ggc_user sudo ...
5
votes
6answers
200 views

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 ...
3
votes
1answer
47 views

Is static IP needed if using VPN to connect to IoT devices?

I have an IoT solution that I need to connect to from remote. I don't have access to open ports nor set static IPs on-site where the IoT devices will be hosted so I was looking for other solutions. ...
2
votes
0answers
52 views

Connect IoT devices to AWS

I have a Moxa I/O Remote connected to a Raspberry Pi running some scripts through pymodbus. I am using MQTT to publish & receive changes/requests in the I/O remote to a web service. The idea is ...
1
vote
0answers
46 views

Change Cloud URL using SimpleLink App for TI CC3200 SensorTags

I have some TI CC3200 Sensortags WiFi which I want to use out-of-the-box (without programming anything) Purpose I want to send the sensor information from the sensortags to an MQTT broker running on ...
4
votes
0answers
70 views

MOXA Modbus with Raspberry Pi – Can't get slave to work

I have two Moxa modbuses that I have daisy-chained together, and then connected to my network's ethernet port. The modbuses are hooked up to a control board with LED lights for the coils and buttons ...
3
votes
3answers
337 views

Options for cheap and “open” wireless thermometer/humidity sensors

I'm starting to explore IoT in my home, the first step being to connect a raspberry pi 3 B+ to a DHT22 temp/humidity, record DHT readings in a database which I then surf via a node server running on ...
3
votes
2answers
43 views

Using RBP as a broker between door locks & web server

I am relatively new to RBP3 and what it can do, but Ill try to summarize what I want to do and maybe I can get some pointers in the right direction. So the idea is to have a web app running on a PHP ...
4
votes
1answer
646 views

mosquitto_sub: command not found

I'm using a raspberry pi image that has the mosquitto broker installed. To troubleshoot, instruction was to run: pi@raspberrypi:/ $ mosquitto_sub -v -t "gateway/+/rx" However that resulted in: -...
4
votes
2answers
51 views

SBC similar to Banana/Raspberry Pi with USB comms

I’m looking forward to develop a handheld device that could communicate with PCs over WiFi network, Bluetooth and USB. I have looked at the forums about Rpi, and they say it does not support Usb ...
4
votes
1answer
64 views

Using Raspberry Pi as USB bridge

I wanted to use my Raspberry Pi as USB bridge between multiple devices. We can assume that I want to connect my iPad which has POS software on it to my thermal printer. Most of star or Epson thermal ...
5
votes
1answer
604 views

Home Assistant on Raspberry Pi Zero W

I tried to install Home Assistant on a Raspberry Pi Zero W, following this blog post. I followed all steps, including starting the daemon as needed. WiFi is connected, and accessible via ‘ssh’ ...
5
votes
1answer
110 views

Can I use Android Things to detect a doorbell press via an RF Transmitter/Receiver pair?

I've bought a pair of 433MHz RF Tx Rx modules. I've been struggling to find any information on getting them working on Android Things (Raspberry Pi). My goal is to set up AT to detect the RF ...
2
votes
2answers
113 views

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
votes
1answer
82 views

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 ...
0
votes
1answer
42 views

First steps to learn IoT with watering plants project [closed]

I am an experienced developper, and I want to learn IoT beginning with a small project. Automatic Watering the plants of my house. Here are the requirements: The project is for learning purpose It ...
6
votes
1answer
186 views

How to register an IoT device to a user account

I'm designing on an IoT device that connects to a web server and publishes/subscribes to the MQTT service. Users download an iOS app to setup/register/use their device. Question: What's the ...
2
votes
2answers
257 views

ESP8266 code using Python [closed]

I need to connect some sensors wireless using an ESP8266 which transfers data over my home Wi-Fi network from sensor to Raspberry Pi. Now, I was told on the Raspberry Pi Stack Exchange that when using ...
7
votes
0answers
88 views

Connecting air conditioner to Apple's HomeKit

I'm planning to connect my air conditioner to Apple's HomeKit app. At first I searched for ways to do it, but I couldn't find a solution that would work for that project. As I've found, Apple ...
2
votes
1answer
111 views

Industrial Controller Vs Prototype Controller(Study level Controller)

What is the difference between industrial Controller and prototype(Study)level controllers or Raspberry pi/Arduino Vs. Industrial Controllers(PLC, NON PLC) controllers
7
votes
1answer
189 views

Control arduino via MQTT

I working with several arduino board and now I need to control them via a web interface. Via web interface I want to activate GPIO. I have two ideas: Each arduino acts as web server and I can ...
4
votes
0answers
159 views

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, ...
10
votes
1answer
100 views

Need Suggestion HD Camera to be integrated with Wifi module

I am working on one of my IoT project which needs to wide angle HD camera modules to integrated with Wifi Modules (open to Raspberry Pi, NodeMCU or anything else). I have checked various options but ...
5
votes
1answer
508 views

SSH to Raspberry with Windows 10 IoT

I set up a Raspberry Pi 3b with Windows 10 IoT to try it out. In the past I had Linux running and I would just ssh connect to it. However when trying to ssh from powershell to the Windows 10 IoT it ...
8
votes
1answer
333 views

How to Use Alexa & Raspberry Pi switch things wirelessly?

I wanted to use my Amazon Echo Dot to connect to my Raspberry Pi, and have it turn on switches wirelessly. What I have done: I have been able to use Makermusings's Fauxmo and a relay board to "trick"...
4
votes
1answer
639 views

SSL/TLS connection to Mosquitto broker from Android app

I have configured the mosquitto mqtt broker on a raspberry pi via this link SSL/TLS Client Certs to Secure MQTT I have the ca.crt,client.crt and client.key. How do I use them in android? It would be ...
5
votes
1answer
57 views

Network type for streaming from RPi to several ESP8266 modules

I would like to host a web page from a RPi that has websocket controls that update in 'real time' such as a slider that transmits its value as you move it. I then want to broadcast the values to ...
6
votes
1answer
88 views

Synchronized data between Hardware's storage and Server's database

I saw in China's bus system, that there are devices inside the bus which can handle e-payments. The process is something like this: Passengers come in the bus. Passengers use a QR-code in their ...
7
votes
2answers
236 views

Local and distant MQTT communication

In my project I have a set of sensors in a local network that should communicate with a Raspberry Pi 3 and then with a distant MQTT broker. Since I'm using ESP8266 for the sensor nodes I thought I ...
4
votes
1answer
95 views

What are the best / recommended approach for communicating or sending message between iOS/Android app to hardware / Raspberry Pi? [closed]

I want to have a hardware where it will send an occasional message or notifications to the mobile app. For example, when the hardware camera is now low on battery it should send a notification to the ...
7
votes
3answers
1k views

In IoT, Is it necessary to involve single-boards such as Raspberry Pi as the only communication devices?

Are single boards always necessary when implementing an IoT connection? Can they be substituted by normal smartphones in, let's say, a business setting so as to communicate to POS/Internet-enabled ...
9
votes
1answer
128 views

Unable to receive RF signals from a remote using a RF receiver

Problem I am unable to receive the signals sent with a KaKu APA3-1500R remote with a RF receiver connected to a Raspberry Pi 3. Hardware -RF Receiver (in Dutch) -KaKu APA3-1500R (in Dutch) ...
3
votes
0answers
156 views

How to handle AWS IoT with a Raspberry Pi to connect to my Node.js API?

I created an API in Node.js to connect my iOS app to my database. In my app, I have a button to start an action which will be connected to my Raspberry Pi. This action will happened after ...
10
votes
3answers
2k views

Is a range of 50 km+ possible in LoRa?

I read this article which said I could get upto 50 km with a LoRa module. But when I read the product description it says the in-built range is only 16 km, so I obviously need an antenna. But what ...
3
votes
1answer
229 views

Program with MQTT hanging after starting, LDR processing is not working with no MQTT messages

I am trying to connect the LDR sensor to IoT by using GPIO pins (pin 4) of Raspberry Pi kit and publish MQTT messages. I am using a laser as a transmitter and the LDR sensor as a receiver, the output ...
8
votes
1answer
343 views

How to get Google Home assistant to read a value from the Internet?

Using IFTTT, I am able to send POST REST requests, which then it is able to flip the lights on/off on my Raspberry Pi. I can make a GET REST request (using postman) to get the value of the light, ...
3
votes
1answer
264 views

Cannot publish AWS IoT messages from Raspberry Pi

I run a simple publish message from a Raspberry Pi. It seems that my device is connected to AWS IoT, but the message is not publishing and the on_connect and on_publish methods are not invoking. Can ...