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USB relay card project

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Vermes

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This board contains 8 relays and has an USB socket. It can control light, printers and other devices from a computer. The heart of this device is FT245R and as a transistor key, an ULN2803 was used. Additionally, the board was equipped with a transformer, to supply the board from 12V AC without an external rectifier.
The board was designed in Eagle. The relays are RM50 (12V). The board has ARK sockets to easily connect wires.
The board size: 100x90mm.
The program that controls the board is written in Delphy7.

Eagle and Eagle3D:



The PC program (it can be found in the attachments on the original thread):



The board:






Link to original thread – Karta przekaźnikowa na USB by popak
 

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