Traffic light
Traffic light model used for the FPGA design competition is shown in the following figures.
The height of the traffic light from the ground is about 40 cm.
・Traffic light operation
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| (a) Blue light turns on. | (b) Yellow light turns on. | (c) Red light turns on. |
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Traffic light model data
Component list
Component list to make one traffic light is shown in the following table.
| Item | Product | Maker | Number |
| LED(green) | 504BGC2E-G3-1BC | Linkman | 5 |
| LED(yellow) | HLMP-EL12 | Broadcom Limited | 5 |
| LED(red) | L5-EKR2530-12500 | Linkman | 5 |
| MOSFET | BS270 | ON Semiconductor | 3 |
| resistance 1/4W 150Ω | GB-CFR-1/4W-151*100 | GB | 1 |
Component list of connection cable from control device (DE1-SoC) to traffic lights is shown in the following table.
| Item | Product | Maker |
| Slim robot cable | KRTAWG28X6C5M | KYOWA HARMONET |
| connector 2.54mm | WINGONEER |
Circuit of traffic light
Green LED driver circuit
Yellow LED driver circuit
Red LED driver circuit
GPIO(DE1-SoC) connection
GPIO0 connection
GPIO1 conneciton