A homebrew Teletype current loop to RS-232 interface in action
from elb on Vintage Technology Hosted by elb on Technology
A quick video of a homebrew opto-isolated RS-232 to 20 mA current loop adapter in operation. The serial protocol analyzer sends a string of U*, waits a few ms, sends CRLF, then waits a few ms, and repeats. This is because U and *, with 7-bit e...
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