January 20, 2010
about 2 years ago
The picture here shows what looks like spade connectors. The datasheet picture is screw connectors. Which is it?
about 4 years ago
Voltage levels. I kludged up the “normal” one-transistor level converter to take the PC’s TX at RS232 levels to the backpack’s RX at TTL levels out of parts I had at hand and it seems to work okay. Other than some of the complaints made above about slow response, etc.
For the moment, I’d like to send command strings to this from a PC. I’ve configured a serial port for 115,200 baud, 8N1. Something is clearly getting through, as the display adds a “character” for each keystroke. The character that gets displayed has no obvious correlation with the character I send, though. I can think of a number of things that could cause problems: voltage levels, slew rate (given test clip connectivity), subtle timing errors. Has anyone had any luck doing this?
No public wish lists :(
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