Pill Dispenser

Pill Dispenser for up to 20 doses.

This tool use NodeMCU(ESP-12) (in C++ mode), that means we use eps8266 as main prosessor.
This cheap little board can run webserver, which is used to setup dose times and internet connection may be used used for time synchronization in future. My application needs no exact times as dosing starts in different time each day.

Movement is done with cheap 28BYJ 5VDC step engine and ULN2003 stepper driver, it is accommodated with optical sensor for right position (Carrier wheel have printed special cylinder with spacing). 0.96" I2C 128X64 monochromatic OLED display is used to show immediate data.

I use 3* parallel 18650 scrap laptop batteries and TP4056/microusb charger (photo included), it may be replace by another 3.7V+ source (on NodeMCU to Vin). Batteries are not necessary. I did not make it to be "super low consumption device", but it easily works longer then 5 days without charging and display is always on.

Control is done by webserv