Build your own IoT/MQTT node for less than $2
albert-david.blogspot.com
Build your own IoT/MQTT node for less than $2
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Re: Build your own IoT/MQTT node for less than $2
#2For those new to this, you can get little esp8266 based modules with usb, header pins etc for about the same price.
https://en.m.wikipedia.org/wiki/NodeMCU
Arduino software compatible too.
Re: Build your own IoT/MQTT node for less than $2
#3For those new to this, you can get little esp8266 based modules with usb, header pins etc for about the same price. https://en.m.wikipedia.org/wiki/NodeMCU Arduino software compatible too.
Those are really cool. Here's an esp8266 framework primarily intended for home automation: https://github.com/xoseperez/espurna
Re: Build your own IoT/MQTT node for less than $2
#4For those new to this, you can get little esp8266 based modules with usb, header pins etc for about the same price. https://en.m.wikipedia.org/wiki/NodeMCU Arduino software compatible too.
> Arduino software compatible too.
The Moddable JavaScript (ES2017) runtime[1] works great on ESP8266 and ESP32 microcontrollers as well.
Re: Build your own IoT/MQTT node for less than $2
#5Is there an hobby equivalent for Bluetooth Low Energy (BLE)? Wifi tends to be power hungry for battery-operated devices. With BLE, you can get months of lifespan while still being able to connect to it with your phone.
I was looking at the micro:bit, but it's still $15. Anything in the $2 range for BLE?
Re: Build your own IoT/MQTT node for less than $2
#6Is there an hobby equivalent for Bluetooth Low Energy (BLE)? Wifi tends to be power hungry for battery-operated devices. With BLE, you can get months of lifespan while still being able to connect to it with your phone. I was looking at the micro:bit, but it's still $15. Anything in the $2 range for BLE?
There are some cheap nRF51822 modules from China which come close to that price range. You might even be able to get them working with the open source Apache Mynewt stack, though I never got around to trying.
Re: Build your own IoT/MQTT node for less than $2
#7For those new to this, you can get little esp8266 based modules with usb, header pins etc for about the same price. https://en.m.wikipedia.org/wiki/NodeMCU Arduino software compatible too.
Those are really cool. Here's an esp8266 framework primarily intended for home automation: https://github.com/xoseperez/espurna
I use this in about ten devices (one of which is a custom-built dog feeder) and love it. I hate using closed-source IoT devices and this is a perfect alternative.
Re: Build your own IoT/MQTT node for less than $2
#8Is there an hobby equivalent for Bluetooth Low Energy (BLE)? Wifi tends to be power hungry for battery-operated devices. With BLE, you can get months of lifespan while still being able to connect to it with your phone. I was looking at the micro:bit, but it's still $15. Anything in the $2 range for BLE?
ESP32 does BLE
Re: Build your own IoT/MQTT node for less than $2
#9Is there an hobby equivalent for Bluetooth Low Energy (BLE)? Wifi tends to be power hungry for battery-operated devices. With BLE, you can get months of lifespan while still being able to connect to it with your phone. I was looking at the micro:bit, but it's still $15. Anything in the $2 range for BLE?
Try the ESP32, it might fit the bill, although I've never worked with its Bluetooth capabilities and don't know much about them.
Re: Build your own IoT/MQTT node for less than $2
#10For those new to this, you can get little esp8266 based modules with usb, header pins etc for about the same price. https://en.m.wikipedia.org/wiki/NodeMCU Arduino software compatible too.
I would go with the Lolin D1 mini, it's better designed and has a more convenient form factor, in my opinion.