Skip to content

joachimt-git/digitalTennisscoreboard

Folders and files

NameName
Last commit message
Last commit date

Latest commit

 

History

7 Commits
 
 
 
 
 
 
 
 
 
 
 
 

Repository files navigation

electronic tennis scoreboard with mqtt interface

picture of tennis scoreboard

hardware

wiring

Epaper modules

Each Epaper module has got 8 wires. According to GxEPD2 library 6 of them can be shared. Only the CS,Busy wires have be treated individually.

EPaper wire GPIO pin
VCC 3.3 V
GND GND
SDA 23
SCL 18
CS individual
D/C 17
Reset 16
Busy individual

The individual GPIO pins can be read from the arduino code.

buttons

button GPIO pin
set games for home in set 34
set games for guest in set 35
change set 32
reset board 33

caveat: as the GPIO pins 34,35 don't have an internal pullup resistor, you need to connect manually a pullup resistor (10k ohm) to 3.3V.

howto use

manual use

After powering up the board sets every score to 0 (like in reset) in a FullWindow mode -> GxEPD2 library. The Epaper module is blinking. By default the focus is set to set1. You can use the 2 buttons to set the games in the set by counting up the games. To change the focus of the set you use the change set button. The number of games for home in the following set is being re-displayed in FullWindow mode, so it is blinking. This indicates that the set has been changed successfully. The reset button resets the board like in powering up.

use with mqtt

The boards connects to mqtt broker to a main topic

  • it subscribes to the /toCourt1
  • it publishes to the /fromCourt1

The data format is json, examples (mosquitto client):

  • toCourt1:
mosquitto_pub -t Tennisscoreboard/toCourt1 -m "{ Score: { \"HeimSet1\": "5", \"GastSet1\": "4", \"HeimSet2\": "0", \"GastSet2\": "0", \"HeimSet3\": "0", \"GastSet3\": "0" }}"
mosquitto_pub -t Tennisscoreboard/toCourt1 -m "{ reset: \"true\" }"
  • fromCourt1:
mosquitto_sub -t Tennisscoreboard/fromCourt1 
{"HeimSet1":6,"GastSet1":4,"HeimSet2":0,"GastSet2":0,"HeimSet3":0,"GastSet3":0}

Releases

No releases published

Packages

No packages published