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.
166
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Calibrating MPU6050 sensor
So I'm using an MPU6050 module for detecting the impacts on a board to which it is attached, in-order to detect hits on the board, using the accelerometer sensors. The module is placed vertically(z-...
- 119
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aeotec aërQ temp/rh sensor or zwave-js not reporting state change
I have a simple iot app:
raspberry pi 4
aeotec Z-stick7
aeotec aërQ temp/humidity sensor
mosquitto
zwave-js-ui
The setup works fine, yet state changes are not being reported so often.
Yesterday ...
- 163
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0
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22
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Raspberry Pi 3 kubernetes face recognition cluster
I need an advice whether this system is possible the way I planned to implement it. I got a project to build a kubernetes cluster for face recognition using raspberry pi 3 devices. The idea is to have ...
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1
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48
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Send Alexa a command from another device?
I'm in the process of creating a Raspberry Pi-powered home automation system. I have a complicated node.js script running on the Pi, and I want to be able to send commands from the Pi to my Alexa (e.g....
- 113
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29
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Private ip in raspberry pi?
I have a Raspberry pi 4 that is connected to a therm sensor ds18b20. The Raspberry Pi is running a flask application in 0.0.0.0 in port 5000, the app gives the current temperature using the sensor ...
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2
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35
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Time Out for Raspberry Pi running Node-RED, Mosquitto, Wireless Xiao ESP32C3
I have a Raspberry Pi Zero 2W on 32bit PiOS running the following Docker containers: Node-RED, Mosquitto, and Influxdb. I have a Seeed Studios Xiao ESP32C3 running a C program compiled by the Arduino ...
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118
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Relay for Multiple Camera Streams
Is there any open source software available for a Raspberry Pi that will read multiple camera streams on the local network and rebroadcast, keeping them as separate streams?
- 111
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161
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How to effectively control Arduino via a web application?
I have a web application in PHP on remote hosting. The application is connected to a MySQL database, from which it reads states, draws graphs from the data that Arduino sends to the database.
The ...
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81
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How to configure WS2812B adressable LED strip with RPI?
I hope this is correct place to answer this kind of question.
I know this might be a basic question and yes there are a lot of tutorial out there.
Purpose: To make dynamic ambilight effect behind my ...
- 111
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21
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How to setup an alternative algorithm to ADR?
I've setup a simple LoRaWAN network with a Seeeduino node and an RHF2S001 gateway module using a Raspberry pi 3. I'm working on a project where I need to setup an alternative algorithm to ADR (...
- 11
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62
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Where can I find the firmware for RHF2S001 gateway?
I'm using this LoRa LoRaWAN Gateway - 868MHz Kit with Raspberry Pi 3 to set up a simple IoT LoRaWAN network.
https://www.seeedstudio.com/LoRa-LoRaWAN-Gateway-868MHz-Kit-with-Raspberry-Pi-3.html
I have ...
- 11
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1
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115
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Named URLs on Local Network
How can I access my IoT peripheral device (raspberry pi B3+) on my local network in a reliable way? I want to use WiFi not BLE. I want to protect against the device getting a different IP when it is ...
- 103
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1
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1k
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Make connection between react native & raspberry & MQTT
I am currently making an IoT App that I'm trying to connect to a Raspberry Pi using MQTT. I use the react_native_mqtt package. The problem I have is that it doesn't connect. What I'm trying to achieve ...
- 179
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164
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Node-red running on DietPi show gpio nodes as not available [closed]
So this, running the latest DietPi (DietPi_RPi-ARMv6-Bullseye) on Raspberry Pi zero W and using node-red-node-pi-gpio to talk to hardware.
However after deployment I see this:
RPi.GPIO python library ...
- 111
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85
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4-Channel 16-Bit ADC for Raspberry Pi (ADS1115) - Can I connect two analog sensors?
I have a RP4 and thinking about buying EC and PH sensors from Grove. I've learned that RP4 doesn't have an analog input so I'm thinking about connecting it through ADS1115 from Grove.
I'm not sure ...
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1
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890
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Can't Connect to ZigBee Devices (Raspberry Pi4, HomeAssistant, Docker-Compose, ConBeeII)
I'm stumped on this one - everything appears to be correctly configured and working properly...except that HomeAssistant can't discover any ZigBee devices. Adding the ConBee II appears to work just ...
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172
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Are micron feature-size LIDAR sensors available?
I want to scan various writing materials such as card, cloth, various grades and qualities of paper, wood, even hemp-based or other writing surfaces. The reason is I wish to write a GPU-accelerated ...
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170
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Who can help me with the LIRC config for AEG Hood with Hob2Hood functionality?
Has someone already had success in retrieving the LIRC codes for AEG Hood with Hob2Hood functionality?
I've allready found the following codes:
FAN_1 0xE3C01BE2
FAN_2 0xD051C301
FAN_3 ...
- 11
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1
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220
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BLE Sensor Gateway & RaspPi Project
Goal:
To build a gateway using a RaspPi 4 which will receive the BLE data from the sensor and be able to see this on my mobile remotely anywhere.
Sensor:
Temperature & Humidity BLE (T201), you use ...
- 13
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0
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78
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What Kinda of Trigger to Use for a System with Two Raspberry-Pi's
I have a system like the image shows. Now instead of it being connected with an Ethernet cable, it is going to be wireless.
The SBC's represent Raspberry Pi's.
SBC0 reads the data all the time and is ...
- 101
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1
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164
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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 ...
- 119
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2
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270
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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 ...
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33
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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 ...
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2
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149
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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 ...
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1
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1k
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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 = ...
- 13
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1
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145
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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 ...
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3
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1
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93
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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 ...
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92
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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 ...
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1
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50
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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 ...
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1
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83
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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 ...
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0
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700
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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 ...
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2
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124
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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 ...
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73
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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 ...
- 141
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0
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166
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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 ...
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1
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4k
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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 ...
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2
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569
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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 /...
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1
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66
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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 ...
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1
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235
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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 I'm using an Arduino UNO with a Dragino Lora/GPS ...
- 241
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1
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68
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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. ...
- 151
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0
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966
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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 ...
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213
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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 ...
- 113
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0
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92
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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 ...
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95
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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 ...
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0
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114
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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....
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1
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129
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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
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0
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49
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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 ...
- 201
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43
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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
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1
answer
329
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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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0
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76
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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 ...
- 21
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2
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484
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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 ...
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