Connecting Sharp PC-G850VS to PC

[Dan C]

(01-16-2023 09:04 PM)polbit Wrote:  Thanks everyone!

I have built the connection using an older FTDI 232R USB-to-Serial connector, from Parallax robotics kit. Everything looks fine when I do TEXT/SIO/LOAD on the Sharp - it shows RECEIVING and busy indicator.

As soon as I start Tera Term or Putty though, connected to the port (proper settings including hardware handshake), I get I/O DEVICE ERROR on the Sharp...

Have you inverted the HIGH and LOW values in the FTDI 232R chip?
Sharp has inverted high's and lows i think.