chitokim / eimos

Japanese Mahjong Stick Scorer

EiMOS : Electrical Impedance to Mahjong Output Scores

A Library for legacy scoring system of Japanese mahjong tables. Formerly known as mahjongAsst. Legacy mahjong scorers implement special score sticks containing electrical elements. My enquiries clarified that the elements are R / L / C passive components. This library measures parallel resistances/capacitances of stack-piled score sticks, and convert the values into actual scores of 4 mahjong players

EiMOS is in NO WAY RELATED to EIMOS, a military vehicle brand of Spanish defence company EXPAL. Library EiMOS isn't intended for military uses.

Features

-Realtime score tracking for all 4 people

-Outputs error message when the sticks are in wrong places

-Manage display mode(NORMAL, DIFF, PM) with push buttons for each player

-Manage honbas with a push button

Supported Models

Resistors

AMOS MONSTER, NINJA, etc

Capacitors

CENTURY TENPAL GOLD

CENTURY TENPAL SILVER

Custom

You make your own system, becuase everything is just a passive element value.

Example Diagram

Example

MCU : Raspberry Pi Pico(RP2040)

Model : AMOS MONSTER (in fact resistors equivalent to the model)

eimos's Issues

Enable External ADC

mahjongAsst measures RLC values by ADC readings.
Naturally, its accuracy, especially for resistance measurements, depends heavily upon performance of the internal ADC.
For example, I recently tried AMOS_MONSTER thing on ESP32, but the results were terrible.
So mahjongAsst should offer an option to use an external ADC.
ADS1X15 library looks cool.
https://github.com/RobTillaart/ADS1X15

Dissect GPL Parts

I want to re-license this project into a more permissive license, like BSD License.
Codes for capacitance measurements are basically a derivative of library "arduino-capacitor".
And by inheritance mahjongAsst became GPLv3.
Maybe refer to another capacitance measurement library with BSD, MIT thing,
and remove the existing codes.