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Internet of Things : Recent Questions and Answers

Find answers to your questions about Internet of Things or help others by answering their Internet of Things questions.

Are MQTT Brokers able to retain/cache some data for a certain amount of time and then send to the subscribers?

I currently have a Mosquitto MQTT Broker on which some IoT Nodes publish their information on a specific topic. I have an instance of Telegraf from InfluxData running that subscribes...

Asked on 11/07/2021

1 answer

ESP OTA from Github

I want to be able to program my ESP32 (same for ESP8266) remotely, I have used ArduinoOTA without problems, and I can upload the file into the ESP selecting the...

Asked on 11/07/2021 by Sembei Norimaki

1 answer

Do you know of any product that uses the uCOS RTOS?

For an assignment for uni I need to find consumer products using uC/OS by Micrium (currently Sillicon Labs). Can't find anything that's not from their customer stories. I think it...

Asked on 11/07/2021 by Kelvin Armitage

1 answer

Signal Processing in LoRa

I was working with LoRa interfacing with microcontrollers and realized that I'd require encryption of data in my design. Can someone tell me if I would require signal processing for...

Asked on 08/23/2021 by Pankajkumar

2 answer

Integrating STM32 device with smart lock via BLE

I am using a Particle Boron to integrate with a Smart lock but I am not being able to do it. I'm using Particle's...

Asked on 08/23/2021

0 answer

Securing wifi SSID and password during provisioning

This is yet another provisioning BLE/Wifi question. We are looking to secure the initial communication between our mobile application and smart device (esp32, ble and wifi). We want to make...

Asked on 08/23/2021 by AshUK

0 answer

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...

Asked on 08/23/2021 by Dharshinii Ravikumar

0 answer

Flutter vs React Native (for building IoT Applications)

Good day Experts! I need your valuable suggestions regarding a very important decision in my development life. I need to know which framework is best suitable for IoT applications like...

Asked on 08/23/2021 by user12326

0 answer

When and why to use MQTT protocol?

I am developing a device which measures temperature, humidity and mass. Currently it uses HTTPS to upload data to a remote server. Now I know that there is a protocol...

Asked on 08/23/2021

6 answer

Making Amazon Echo / Alexa work outside of US, UK, Germany and Canada

According to Amazon Echo's Wikipedia page, they're only available in the US, UK, Germany and Canada. Echo's Achilles heel is Amazon's unwillingness to look beyond the US. -...

Asked on 08/23/2021 by Coomie

2 answer
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