A small toy thing to remind myself of daily tasks.
It consists of a hardware piece as human interface and a stupid server to keep track of the state.
This is mostly a toy for myself because I wanted to use the lolin board for something. If you're interested in this and the code / documentation is lacking, feel free to open an issue :-)
- A microcontroller with an ESP8266 Wifi module, I'm using a NodeMCU Lolin v3
- Two LEDs (e.g. a green and a red one)
- Resistors for the LEDs
- A button
The circuit is very simple, just connect the LEDs to ditigal outputs of your micro controller. The lolin has 3.3V outputs, so I got away without any resistors, YMMV. For the button, make sure to connect it to a digital I/O that supports interrupts. D7 on the lolin works for me.
To setup the board for programming with Arduino IDE, add the esp8266 board URL.
then you can add the esp8266 board library.
Relevant settings are:
- Board: NodeMCU 1.0 (ESP12E Module)
- Flash size: 4M (3M SPIFFS)
- IwIP variant: v2 lower memory
- CPU frequency: 80 MHz
- Upload speed: 115200 baud
I also needed to install the proper USB chipset drivers for Windows or Mac.
Customize config.h and then upload the client program.
It's really stupid yet. Doesn't even store the last state, but works.