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.
150
questions
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5 views
What Type of System Should I Use
I have a system like the image shows. Now instead of it being connected with an Ethernet cable, it is going to be wireless. I am conflicted between what kind of system to use, timed or event trigger, ...
1
vote
1answer
141 views
Quality water IoT system - Which device choose
I want to develop a quality water IoT system. The picture below shows the idea.
I'm not sure the device that I have to use for this project.
My idea is:
Every X minutes (I'm not sure the time) get ...
0
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2answers
41 views
When use microcontroller, when use microprocessor and when combine both
For a long time I have had a simple question to which I can't find an answer which convinces me. Basically the title: when should I use a microcontroller, when should I use a microprocessor and when ...
1
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0answers
25 views
Getting a custom SBC board developed to spec
I need to design a single-board computer to the following specs. Can anyone please suggest companies that could build this economically?
Two full-size (USB-A) USB 3 ports
A CPU fast enough to handle ...
3
votes
2answers
51 views
What is necessary to employ a edge computing architecture
I've been reading about edge computing and use of nodes to decrease the distance between data and the server and most articles suggest the need of cloud to do edge computing. However, some papers that ...
0
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0answers
24 views
Does my local home automation system have to use secure communication?
I am creating (programming) my own home automation system. It will consist of 3 apps:
Client app, which will communicate (update) database in the cloud
Server on Raspberry pi, which will listen to ...
1
vote
1answer
37 views
Connect to Mqtt over websockets
I'm trying to connect on a broker with the following script
#!/user/bin/env python
import paho.mqtt.client as mqtt
import random
import requests
import warnings
import LoggingManager
logger = ...
0
votes
1answer
17 views
Is there a Hub that can receive a 915Mhz signal and report on it?
I'm looking for a device that can detect (and report to my raspberry pi) the presence of a signal from my Switcheroo:
Switcheroo - Sync Lights with No App, WiFi, Bluetooth, or Remote Control | Change ...
1
vote
1answer
26 views
Wheel skid detection
I am working on a project which sensed four speed by using hall sensor attached to wheel by using raspberry pi.
I have wrote program for that only issue with that it gives fairly good results when ...
1
vote
1answer
45 views
Access Raspberry Pi behind a NAT firewall through Internet
I have been developing projects with Raspberry Pi 4. For the current project I am running a NextCloudPi server on it. I am able to access the server using my Internal IP. I want to access it using a ...
0
votes
1answer
31 views
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 ...
3
votes
1answer
55 views
Monitoring temperature using AWS IoT
I've developed an Android app for my dad for monitoring temperature from a specific room.
He wants to be able to see the temperature even when he is not home.
I got working with Amazon IoT and it's ...
1
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0answers
156 views
MH-Z19B span point calibration: Anyone managed so far?
According to datasheet you can span point calibrate the MH-Z19B CO2 sensor. https://www.winsen-sensor.com/d/files/infrared-gas-sensor/mh-z19b-co2-ver1_0.pdf
E.g. with 0xFF 0x01 0x88 0x07 0xD0 0x00 ...
4
votes
2answers
69 views
Decoupling data fetching from processing and publishing
I am working on a project that involves raspberry pi and the accelerometer sensor ADXL355. The raspberry's responsibility is to fetch the data from the sensor, filter only useful data and publish it ...
4
votes
0answers
28 views
Alarm system built with raspberry + sonoff rf bridge
I am developing a personal project at the end of which I should be able to create a homemade alarm system.
All this should be protected against voltage drops/failures, the whole circuit will be inside ...
2
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0answers
43 views
ESP32 transmit data over BLE VS Wifi
I am working on a project where I have got an ESP32 device (Wifi & Bluetooth), which reads data from some sensors, such as temperature and soil moisture (outdoor environment).
The data is then ...
3
votes
1answer
2k views
Can Raspberry Pi be used instead of Google Nest as a hub to control my smart home via Google Assistant?
I am searching for a way to make my home "smart". I have raspberry pi 4 and pixel 2 phone. I thought that it would be cool to make my dumb devices "smart" and control them via ...
1
vote
2answers
93 views
I need to transform MQTT topic, is it possible?
I’m new with MQTT, I have a mosquitto MQTT broker on a Raspberry Pi.
I have some topics from a client in this format /topic/lighton can be true or false.
In other hand I can invoke some topics like /...
4
votes
1answer
56 views
Control Raspberry Pi depending on Wifi-Users
I am creating a "digital dashboard", consisting of a TV and a Raspberry Pi 3B+. The TV just shows calendar, time, weather, etc..
In the tutorial I am following for that, the creator uses a ...
6
votes
1answer
62 views
Cannnot send from arduino to raspberry pi via LoRa
I am trying to send messages from my arduino to my raspberry pi. But I don't understand why the pi isn't receiving the messages.
On the arduino side Im using an arduino UNO with a Dragino Lora/GPS ...
0
votes
1answer
42 views
Ethernet communication via Raspberry3
I recently used an IP-camera to monitor my garden. Now I want to expand with various sensors and a microphone module. Therefore I would use an Raspberry, the camera for the Pi and an USB microphone. ...
0
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0answers
33 views
Cannot set_mode() with Dragino/GPS HAT 1.4 and Raspberry PI 4
I am using the https://github.com/rpsreal/pySX127x library Raspberry Pi4 and a Dragino LoRa/GPS HAT for RPi v1.4. Running test_lora.py in the library, the unit test test_mode() fails with the error ...
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0answers
140 views
How to reconnect to MQTT server after CONNECTIONLOST?
I'm using a Raspberry Pi 3B+ with SIM7600X 4G HAT for communication with Python.
I want to connect to MQTT server to receive messages via writing MQTT commands directly to the serial port of the ...
0
votes
1answer
60 views
Python Paho MQTT doesn't work via LTE
I'm using Raspberry Pi 3 B+ with a SIM7600X 4G HAT for SMS and mobile internet connection.
I want to use Paho MQTT library (it works fine), but it only works via Ethernet or Wifi.
How can I use the ...
3
votes
0answers
68 views
High data usage on a raspberry IOT [closed]
I have notice a signification data usage on my pi even when I am not using it. this can be a problem as I am using a IOT sim card with a small cap.
I have setup iftop and monitored the traffic for a ...
0
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0answers
51 views
Trouble pairing Sengled E12-N1E to CC2531 custom hub
I've flashed my CC2531 according to the instructions here and loaded up zigbee2mqtt on a raspberry pi and spent some time trying to get my Sengled E12-N1E to pair up but I am having no luck getting it ...
1
vote
1answer
35 views
How to toggle a SonoffS31 flashed with Tasmota via OpenHAB and MQTT?
I have a SonoffS31 flashed with Tasmota. I have set up a Raspberry Pi running OpenHAB and an MQTT broker. In the paper UI of openHAB, I have created a Thing that represents the switch.
I have set the ...
1
vote
0answers
50 views
Is there any way to use scanner front panel to scan to linux?
I have a EPSON WF-3540 MFP. I want to use it to scan files directly to my NAS. As this device does not support scan to FTP or any other network share, I thought of using a lightweight linux device (e....
6
votes
1answer
58 views
Connect raspberry pi with 4G
I have a robot (use raspberry pi 3) outside my home (no internet connection there) and I'm with my laptop at home and I want to see the graphical environment (with all applications it has) of ...
2
votes
0answers
44 views
How to decouple the hardware components
Is it possible to make the connections between the Raspberry Pi , Motor Controller and Stepper Motor connected wirelessly?
As you can see above, I have 1 Pi (connects to the Motor Controller), 1 ...
0
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0answers
20 views
Mqtt node connected to multiple router
I have NodeMcu which I wanted to work as MQTT node, and I will have 50 nodes which will connect to routers(total 3) where these routers are connected to the main router through LAN.
For a broker, I ...
2
votes
1answer
66 views
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 ...
2
votes
0answers
34 views
Secure External Network Control of a MQTT Server on a Raspberry Pi
I'm trying to build a home automation system using MQTT. I'm using a Raspberry Pi as the broker. Everything works great as far as controlling it when connected to the same network. But I want to have ...
6
votes
2answers
126 views
Encrypting sensor data on Raspberry Pi?
I am sending sensor data between two Raspberry Pis via lora. I am using two Lora Radios and NOT using a LoraWan network like The Things Network. How should I encrypt my data? Are there any open source ...
2
votes
1answer
60 views
How to program my own smart home with raspberrypi 3? [closed]
Hello smart home enthousiasts,
I'm a software engineering student and I want to start a new project for myself. I really like smart home stuff, but I don't want anything to do with google or amazon.
...
4
votes
1answer
59 views
BLE Heart rate monitor slower without internet
I am working on a project that uses a raspberry pi and a BLE heart rate monitor. I am using the built in Bluetooth on a raspberry pi zero w 1.1, running the latest raspbian buster, using the bluez ...
2
votes
0answers
42 views
In what form should I store data in the cloud for a single device?
This question looks similar to What IoT services are available for storing/sending/publishing generic data in the cloud? though I haven't found a suitable answer yet.
I'm building a light/temp/...
2
votes
1answer
116 views
LoPy4 Gateway (LoRa RAW) connection to Raspberry Pi and AWS Cloud
I am attempting the following setup:
Sensor--> I2C--> Pycom LoPy4(Node)-->LoRa-RAW-->Pycom LoPy4(Nano Gateway)-->RPi-->AWS
I have established the LoRa RAW connection between the two LoPy4s, now I ...
1
vote
1answer
51 views
How to control an on/off switch with raspberry Pi 3(perhaps using Radio)
So I happen to know some python to turn lights on and off in rpi3. Also to automate my home I know how to use relay boards. But the problem is that I have one rpi3 and the light which I want to ...
1
vote
0answers
97 views
ESP8266 and MQTT not working with new router [closed]
Got a new router from the ISP and my ESP8266 NodeMCUs are causing problems, they need very long to connect to WiFi (3-4 mins), which wouldn't be that big of a problem, but they also don't connect to ...
2
votes
0answers
51 views
Google Home API Integration
I have a project that I want to start on that involves Google Home and a custom light system. I currently control some lights in my apartment VIA a website but I want to be able to control the lights ...
1
vote
1answer
172 views
Water meter reading using LORA
We need to get reading of meter using LORA.
Previously, we have used NodeMCU with Wifi module but it contains short range. We need long range which will be around 10 km to 20 km, So we must need to ...
1
vote
0answers
132 views
How to connect Raspberry PI 3 Model B to BLE Motion Sensor
I'm trying to connect my PIR motion sensor using gatttool and is giving me this error:
pi@raspberrypi:~ $ sudo gatttool -t random -b B8:7C6F:1A:D8:24 -I
[B8:7C6F:1A:D8:24][LE]> connect
Attempting ...
4
votes
1answer
55 views
remotely update a raspberry pi with limited data
What's the proper hence best way to push updates to a Raspberry-pi with a limited Mobile Data Cap (1mb/ day).
My first plan was to set up a Git repository and pull files from it once a week for ...
5
votes
1answer
447 views
How can I use Raspberry Pi to communicate with my Z-Wave gateway?
I am quite new to Z-Wave. I have a gateway, 2 z-wave sockets and 3 light switches. Everything comes from Keemple brand if that helps. However, using Keemple I cannot automate things the way I would ...
2
votes
1answer
141 views
Error occurred in installing ThingsBoard Raspberry Pi
I am installing ThingsBoard on Raspberry Pi by following this guide. It gave me an error when I tend run installation script in second last step:
Run installation script:
sudo /usr/share/thingsboard/...
3
votes
1answer
164 views
Installing drivers on Windows 10 IoT Core
First off, if this is the wrong Stackexchange site, please let me know so I can ask on the correct site.
I'm contemplating installing Windows 10 IoT Core on my Raspberry Pi model 3B+ (so ARM platform)...
2
votes
0answers
47 views
Re-link Google Home Account with Assistant Pi on Raspbian
I installed the Google Assistant on a Raspberry Pi 3+ and it works perfectly.
I see the Raspberry in my Google Home App and I can configure some features. However, by mistake, I have unlinked from ...
6
votes
2answers
97 views
Internet Connectivity at the sea
I am building a project which involves the application of geo-fencing at the international borders. An alert is received when the user is near the border. an email is sent to the coastal guards as ...
2
votes
0answers
83 views
What is the most safe and easy way to send a command to a remote Raspberry Pi? [closed]
I would like to send a command with some predetermined number of arguments to a Raspberry Pi and get the output back from it. I was thinking of using restricted ssh key but was wondering if that is ...
