Node-Red, MQTT and the new Weather Station (Part 3)

Node-Red, MQTT and the new Weather Station (Part 3)
The circuit The circuit is very simple thanks to the I2C component. Noted with the NodeMCU dev board, when configuring for deep sleep, one will need to connect GPIO16 to RST. More, GPIO2 must be keep High while GPIO15 must keep Low. This is not explicitly mentioned anywhere but in their design doc. Looks like ...

Node-Red, MQTT and the new Weather Station (Part 2)

Node-Red, MQTT and the new Weather Station (Part 2)
Node-Red Node-Red is a browser based tool to let you quickly and easily construct your own logic of handling various IoT devices, including subscribing the MQTT messages, listening to HTTP requests, reading and writing to Databases, publishing to MQTT brokers and responding to HTTP requests. It also allows you to define specific functions written in ...

Making your solar power station 2

Making your solar power station
My house’s balcony does not have a power outlet, but I want to take the weather data from there to feed my Home IoT the information on the temperature, relative humidity, sun light, etc.. All these time my weather station in my balcony (recently upgraded) was living on a 8800mAh Li-ion rechargeable battery pack, and ...

Node-Red, MQTT and the new Weather Station

Node-Red, MQTT and the new Weather Station
The weather station and home monitor I built using the Particle-Core were working perfectly well, except that the weather station, being far from any power source, need to be run on battery. However, the power consumption of the Particle-Core was not too battery friendly even though it is designed to wake up each 10 minutes to report ...

NodeMCU, ESP8266 and Lua (Part 1)

NodeMCU, ESP8266 and Lua (Part 1)
I have been browsing different forums on discussions about micro-controllers with wireless capabilities, and one thing I noticed people keep talking about is the low cost, low power ESP8266. I didn’t pay much attention to it as it does not come with a cloud service like the Particle.io with their Core and Photon devices, nor ...

Particle-Photon with HMI display 1

Particle-Photon with HMI display
This color LCD display is not an ordinary LCD display which you will need special driver and a relatively powerful processor to blit all those hundred thousands of RGB values to those pixels in order to display something simple such as your temperature sensor’s output. This kind of displays is known as HMI displays and they are ...