A development board with the ESP8266-12E including a USB interface for programming and serial communication. This board is identical to version 1.0/2.0. It can be powered via the USB port, via 5 volts on the Vin pin, or with 3-3.6V on the 3.3V pins. Additionally, it has an output for the USB voltage (see pinout). …
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Here is a brief overview of the NodeMCU Base add-on board for the NodeMCU V3 by Lolin. Apart from a voltage converter that operates from 6-24V and a few brought-out pins, the board offers nothing else. Facts Description Value Slot for NodeMCU V3 1 piece Voltage converter 6V-24V Brought-out pins 9 pins Brought-out pins with power supply 10 pins …
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I came across the term MQTT online and really liked the approach behind it. So, I treated myself to a small experimental setup, which I've described below. First, a few details about MQTT. About MQTT General Information MQTT governs communication between data sources and data sinks using a broker. Data Source Sources for…
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There is an expansion board with a motor driver for the NodeMCU V2. It allows two small motors (up to 1.2 Amperes) to be controlled via an L293DD motor driver. It is also possible to connect a stepper motor. Furthermore, it offers two separate connections for the power supply of the board and the motors. Most of the ESP pins are brought out with an additional ground/power pin, which makes connecting...
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I bought two almost identical 128×64 displays to test them. These are controlled via the Wire (I2C) bus. However, there are also variants for the SPI bus, which are not covered here. The two displays have only two obvious differences at first glance. First, they have different sized drill holes and...
Continue reading "ESP8266 SSD1306 Monochrom OLED 128×64 I2C"
I still had two OLED displays from a test and was wondering what I could do with them. Since I've been experimenting with nodes with integrated displays lately, I was planning to give my old ESP8266 NodeMCU V3 a bit of a boost. I want to briefly outline the process here; don't hesitate to ask questions and leave a comment. ...
Continue reading "NodeMCU V3 mit Oled Display aufmotzen"
A development board with the ESP8266, including a USB interface for programming and serial communication. The board can be powered via the USB port, via 5 volts on the Vin pin, and with 3-3.6V on the 3.3V pins. All connection pins are led to the outside; the node just fits onto a breadboard. Views Front view Top...
Continue reading "Node MCU V1.0/2.0"