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.

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25
votes
6answers
3k views

Is there a big jump between prototyping on a Pi, and using a microcontroller?

This question asks, amongst other things, if there is a big learning curve between using Python on a Raspberry Pi to prototype an endpoint, and using a microcontroller. Clearly there is a big ...
27
votes
3answers
624 views

What are the best security practices to secure a remote IoT camera?

I have done a bit of home automation such as building a remote camera that can be turned on via SSH locally and publishes images on a Raspberry Pi run Linux server. I'm curious, though, as to what ...
13
votes
2answers
814 views

Which IoT platform should I use for low-energy temperature sensors to be powered by battery?

I'd like to setup two temperature detectors: one outside and one inside my house, in order to compare temperature and act on the difference (opening/closing the window for example). The issue I'm ...
10
votes
1answer
384 views

Would RPI 3 serve as IoT server with MQTT?

I answered to the below linked question and started to think, what are the hardware specs for running an IoT stack of for example MQTT over LoraWan? Would Raspberry PI 3 survive or not? I do not care ...
7
votes
2answers
2k views

Raspberry Pi to send sensor's data to server continuously and receive commands from server

I would like to design a system using Raspberry Pi that sends the sensor's data to server continuously and receive commands from server. Will MQTT suit my needs ? Is there any way to do so if I use ...
10
votes
3answers
723 views

Power reduction for Raspberry Pi GPS/GSM tracker

I've recently built a fully functional IoT GPS/GSM tracker with a Pi Zero for a college project and now that it's finished and done with, I would like to minimize the current draw of the entire system ...
12
votes
3answers
936 views

How to efficiently control my dumb TV via Alexa?

I have a more or less dumb TV (Toshiba 42SL863G) and home cinema system (LG HX806SG) which I want to control via Alexa voice command. At least switch them on and change into either TV or home cinema ...
10
votes
1answer
663 views

Connecting a sensor to ZigBee

I am planning to measure water level in a well, which is about 10 m deep with maximum water level up to 5 m. My plan is to use ultrasonic sensor HC SR04 to measure depth, transmit it via ZigBee to a ...
8
votes
1answer
372 views

Confused about which technology to use in Smart Home System

In my college project (Smart Home System) there's a functionality in which if someone knocks on the door an image has to be displayed on a monitor (in a browser). I am implementing the door knock ...
3
votes
1answer
394 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 ...