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Raspberry PI, Monitor and external lights.

To extend the ArcheryClock system on Raspberry PI with visible traffic lights and visible sequence (ABCD) it is possible to use a the GPIO output pins on Raspberry PI.

 

For more info about Raspberry PI for ArcheryClock, see Link.

 

 

 

2 examples of connecting external lights.

  • Use a 12 Volt LED circuit. Comparable to the Led screens.
  • Use a mains voltage circuit (110V - 230V) comparable to the k8055 example.

 

12 Volt DC (LED) circuit:

 

Easy way to create traffic lights and ABCD signals is the use of (12 Volt) Led-Strips:

To convert the 5Volt signal from Raspberry PI GPIO ports to 12Volt to power the LED-strips, an ULN2803 (and a 12 Volt power supply) can be used:

 

 

 

 

 

 

Mains Voltage (110-230 Volt AC) circuit:

 

To convert the 5 Volt signal from Raspberry PI to a 110-230 V AC signal, a MOC 3041 opto coupler (to isolate high power from Low power) in combination with BTA08 Triac can be used. This circuit is needed for every channel (red, green, etc.)

 

 

For more info about Raspberry PI for ArcheryClock, see Link.

 

 

 

 



© 2019, Henk Jegers