It seems that ESP32 boards are now coming down in price and increasing in number.
In today’s mailbag, this little number entitled WeMos® TTgo ESP32 WiFi + Bluetooth Board 4MB Flash UNO D1 R32.
This isn’t the cheapest ESP32 out there (though it is not expensive either) - some of the simpler ones with merely 2 lines of connectors and a USB socket are cheaper – but then they’re not size compatible with Arduino boards (if that is important to you).
Continue reading Another ESP32
My wife’s Chumby is on it’s last legs – and was about to go in the bin until along came a fortunate coincidence to save the day.
Some time ago, 4D Systems sent me one of their LCD touch-screens. As many of you know I’m interested in the range of boards that ITEAD do with intelligence built in – all you have to do is talk to them serially and send commands – they also send serial back when defined areas are touched.
With that in mind, 4D sent me one of their boards to test. Well, thanks to one thing or another and it got put to one side, until this weekend…
Continue reading 4D Systems Gen4 IOD
For some years now I’ve been using my own serial terminal for ESP8266 development – not any more!
As fervent readers will know, over a period of time I’ve developed software for the phenomenally useful ESP8266 and you can find out more about that, here, suffice it to say it is likely the most comprehensive code for general use of the ESP8266 out there, focussing on MQTT communication so to be particularly useful for central controllers with MQTT access such as “the script” makes available via Node-Red on a range of microcontrollers, for example for my own home control setup.
Update 17/10/2017 - New release today
Continue reading YAT and ESP8266
Some of you may recall that in the dim and distant past, Aidan and I wrote a SKILL for Amazon’s Alexa – which let us do anything by simply passing the speech back to Node-Red… and we could sent text as speech to Alexa. Well, that relied on SSL port access and writing skills and… we’re still waiting for something easier and so without effort, that arbitrary response is still a little way off, but..
If you want REAL EASY - read on. (updated 13/10/2017)
Continue reading More Alexa Marvels
The SHT30 is a chip able to measure temperature and humidity and it is very tiny. It is available on a “shield” board for as little as £1.76 including shipping – and will work with any system able to handle I2c – such as my own ESP8266 kitchen-sink code.
Now, ask yourself, why would we want yet another temperature/humidity chip?
Don’t we already have the DHT11 and similar? Read on.
Continue reading Enter the SHT30
This is kind of interesting – the promise of an ESP8266 MQTT broker (not client – BROKER) able to talk to up to 25 connections. Really? Let’s find out.
Go here to get an account (free) and download the .BIN file for your ESP8266. Use something like the NODEMCU flasher to put the single .BIN file into the ESP8266. All of this takes no time at all.
Continue reading MQTT Broker on an ESP8266