IR-based goal system for football tables

• 2x LTE4206 (emitters)
• 2x IR photodiodes + TL082 (detectors)
• 2x white LEDs (goal indicators)
• ATmega16 uC (measures the time of ball passing and sends the data over RS232)

Linux AVR tools chain:

apt-get install eagle avrdude gcc-avr avr-lib gtkterm

make

Serial communication runs at the speed of 115200 bps (8N1)

gtkterm --port /dev/ttyS0 --speed 115200 --bits 8 --stopbits 1 --parity none

• Diagnostic messages (with leading #)

# Hi!
# Aug  7 2014 11:11:41
# avr-gcc v1.7.1 (20110216)

• Time measurements

!<detector ID>:<time in ms>
!1:124
!2:98