We have a lot of struggling with counting the points at a pingpong game.
With this handy electronic counter there is no more arguing.
Also the person to serve is pointed with the leds.
I added 2 gamemodes to choose:
11 - the original table tennis rules (switch serve by 2 points)
21 - larger games (switch serve by 4 points)
The winner is who wins first 3 sets (best of five)
For this counter you need the led&key module.
This is a cheap arduino module with lots of possibilities.
You also need:
- arduino nano (or equivalent)
- battery contact springs
- 5V booster module (MT3608 step up power module)
- switch (19x6x13mm)
- 2x AA battery
- 4 small screws
Also added a mount for a mini tennis table.
The electronics are easy to assemble.
Choose game mode 11 or 21 points to win (choose keys 1-4 or 5-8)
Choose which player starts to serve (blinking leds, choose keys 1-4 or 5-8)
key 1 and 8 - increment points (also increment serve)
key 2 and 7 - decrement points (also decrement serve)
key 4 and 5 - stop game, asking for Yes (key 6) or No (key 7+8)
The blinking led is the person who has to serve.
After a game won players has to switch side, the points also switch side
so the points are always at the right side of the players.
Let me know if you want improvements