ESP8266 - 18 Bit ADC - MCP3421 - I2C Driver

[TJ232]

   After testing the ESP8266 Internal ADC - http://www.esp8266-projects.com/2015/03/internal-adc-esp8266.html let's see also a higher resolution ADC at work.

   The MCP3421 is a single channel, low-noise, high accuracy delta-sigma A/D converter with differential inputs and up to 18 bits of resolution in a small SOT-23-6 package. The on-board precision 2.048V reference voltage enables an input range of ±2.048V differentially.

   The device uses a two-wire I2C compatible serial interface and operates from a single power supply ranging from 2.7V to 5.5V, has a decent price and looks like a good companion for our ESP8266 module. 

For more details : http://www.esp8266-projects.com/2015/04/18-bit-adc-mcp3421-i2c-driver-esp8266.html

Videos:

 1. Test done in filtered environment - stable voltage

 
2. Test done in noisy environment - using real bus unfiltered ?voltage


3. Test done in noisy environment - values are printed directly on CBDB DevBoard LCD Display?

[Muxr]

Relatively cheap too. Nice!