AVAILABLE also on TINDIE Store : https://www.tindie.com/stores/nEXT_EVO1/ Today we will continue with the most requested typer os posts the “Driver Implementation Series”: Part 1 of the PCF8575 16-bit I/O Port Expander – Output. In the situation when you need more I/O pins that available on your MCU the simplest solution is to use a “port expander”.
PCA9685 Extension Board Module Available also on Tindie! ESP Basic Tutorials Series: PCA9685-16Channel 12-bit PWM I²C-bus LED controller Driver – Part 1 If you are looking for a very simple to use 16 Channel LED controller or just for a nice 16 Channel, high resolution PWM driver then this one is for you! The PCA9685 is an
Because of the very cheap ACS712 Current Sensor Board modules available all over the place, I really think that everybody heard about ACS712 sensor from Allegro MicroSystems. As I was asked if “Can be used as a current sensor module for our ESP8266 Projects without too much hustle?”, I ordered few of them and let’s explore
Autorange Analog frontend For a deeper Hardware description please take a look at the ESP8266 Analog Extension Board What we will need: ESP8266 nEXT EVO Board ESP8266 nEXT EVO – Analog Extension Board – AN1 For programming and uploading the driver and the software we will continue to use the LuaUploader as before. ADC Frontend description
This is just a very quick example on how to add a Voltage Divider to the ESP8266 Internal ADC input to increase the ADC input range.For more theory behind, please take a look at the previous related article: ESP8266 – Internal ADC Today project: Measure a voltage input range from 0-5V with the ESP8266 internal ADC
From today we will move on the Analog interface part of the nEXT EVO Board AN-1 and we will start talking about the Digital to Analog conversion, Analog Autoscaling input and Analog to Digital conversion . For the Digital to Analog conversion part the choosen one is the Microchip MCP4728 I2C DAC IC. The MCP4728 device is a
I think everybody knows already the popular SSD1306 0.96″ OLED Display available all over the place for a very good price: SSD1306 0.96″ I2C OLED Display My first option for a Alphanumeric Display still remain the ST7032i LCD one, but as looking also for a Graphical Display option found this SSD1306 OLED as a easy to use one with the CBDB
This is Part 2 of the ESP8266 nEXT EVO Analog Extension Board (AN1) Series In this part we will talk a bit about the nEXT Bus I²C protocol and we will start also a longer, multi-part discussion about testing procedures and software programming for the AN1 Board devices and functions (I/O Expansion port, Temperature, ADC,
This is Part 3 of the ESP8266 nEXT EVO Analog Extension Board (AN1) In this part we will talk about the ESP8266 nEXT Evo 8 Bit I/O Expansion Port based on the PCF8574 chip from NXP, testing procedures and software programming for the AN1 Board Previous related Articles: New ESP8266 DevBoard – CBDB nEXT EVO –
This Mailbag can also be seen as Part 4 of the ESP8266 nEXT EVO Analog Extension Board (AN1) In this part we will continue talking about the ESP8266 nEXT Evo 8 Bit I/O Expansion Port based on the PCF8574 chip from NXP, testing procedures and software programming for the AN1 Board. After testing the Output of the
