Hello all!
I've been trying to send and receive a signal by using TOSLink optical transmitters and receivers from Sys-Concept in the same circuit (making a transceiver of sorts):
http://www.sys-concept.com/toslink_receiver.htm
According to the data sheets of both the receiver and the transmitter, I need a bypass capacitor between each power/ground pins of each part. I am sending my signals over the TTL interface of a Tinkerforge bricklet:
https://www.tinkerforge.com/en/doc/Hardware/Bricklets/RS232_V2.html
I managed to send and receive signals just fine when I make the circuit on a breadboard. However, when I made a PCB (photo attached), the receiver just gets a stream of gibberish. U$1 is the receiver, and U$2 is the transmitter. There's a 4-pin connector (on the right) that connects the board to the Tinkerforge TTL interface. Does anyone know what I'm doing wrong? I'm a little new to this stuff, and I've been stumped for a while. I hoping that it's just a careless error I've overlooked.
Thank you! I'm happy to provide any more information that is needed.
Sincerely,
Ryan
I've been trying to send and receive a signal by using TOSLink optical transmitters and receivers from Sys-Concept in the same circuit (making a transceiver of sorts):
http://www.sys-concept.com/toslink_receiver.htm
According to the data sheets of both the receiver and the transmitter, I need a bypass capacitor between each power/ground pins of each part. I am sending my signals over the TTL interface of a Tinkerforge bricklet:
https://www.tinkerforge.com/en/doc/Hardware/Bricklets/RS232_V2.html
I managed to send and receive signals just fine when I make the circuit on a breadboard. However, when I made a PCB (photo attached), the receiver just gets a stream of gibberish. U$1 is the receiver, and U$2 is the transmitter. There's a 4-pin connector (on the right) that connects the board to the Tinkerforge TTL interface. Does anyone know what I'm doing wrong? I'm a little new to this stuff, and I've been stumped for a while. I hoping that it's just a careless error I've overlooked.
Thank you! I'm happy to provide any more information that is needed.
Sincerely,
Ryan