Boards used for this tutorials are available also in Tindie Store: https://www.tindie.com/stores/nEXT_EVO1/
Related Article : http://www.esp8266-projects.com/2016/...
ESP Basic Series - Part 1 of the PCA9685 - 16 bit PWM LED driver implementation. In this part we will talk about hardware side and will do a very simple driver implementation.