|Proconductor: NodeMCU Team|
Type: Multi-function board proprogrammable
Installation difficulties: Bassa
Ease of use: Media
|Review review: 1.1|
NODEMCU, THE RAW DIAMOND
NodeMCU is a small board based on the system-on-a-chip (SOC) ESP8266, or the same all-in-one chip that rappresists, for example, the heart of family devices ITEAD Smart Home and designed expressly for the and production .
The module NodeMCU it has very small dimensions and weight (4,8 × 2 centimeters - 15 grams) and can be used for many different purposes, from driving lights, relays, small or large engines, to act da clean contact and so on. It is an object extremely versatile because it offers connection Wi-Fi and possibility of being programmato in language Moon, which makes it a favorite object for those who delight in prodo-it-yourself jets with a technological base.
NodeMCU looks like a board with 30 contact pins, a blue LED, two buttons (one for reset and one for setting the module in mode flash, or for riprogrammarlo), a micro-USB port.
The module can be powered in very different ways, as explained in this nice Henry's Bench article.
The scheme, in short, is the following:
As explained by the image it is possible to feed NodeMCU with continuous voltages from 3.3v to 20v. In addition, the micro-USB port (normally used for riproprogram the module's firmware).
The board features 30 pins, some of which are dedicated to power, while the others are dedicated to use. THE GPIO (General Purpose Input / Output - general purpose input / output) are 16 (from GPIO01 to GPIO16)
In terms compatibility, there is not much to say: NodeMCUis not compatible at the factory. With nothing.
The reason is simple: initially it is a useless piece of iron; will eventually be our riproming to make it compatible with some specific environment.
Domotics integration is high.
NodeMCU accepts, as pre-packaged firmware, the known Sonoff-Tasmota which, although designed for use on ITEAD family devices Sonoff Basic, can also be installed and used with this board.
The adoption of Sonoff-Tasmota brings with it all its direct and immediate advantages: first of all, the adoption of proProtocol MQTT (which actually would also be available programmando in Lua), native compatibility with Home Assistant and Domoticz, indirect (via MQTT) with Homebridge and much more.
From a piece of iron to a powerful component useful for a thousand different functions in our home automation (and not only).
Nb. La proreimbursement orderprogrammation with Sonoff-Tasmota (or with other firmware) is the same as the Sonoff Basic, just use the contacts 21 and 22 for RX / TX transmission and use the "flash" button to set the module to write firmware mode.
On the topic of programmation and configuration of the firmware Sonoff-Tasmota su NodeMCU we have drafted an ad hoc guide.
|The inDomus judgment on NodeMCU is positive. For a few euros it is possible to have a multi-function device which is limited only by the users' imagination.|
An interesting example of use of the NodeMCU is the realization a panel of visual notifications based on LEDs and on this powerful little jewel.