You have: digital gague
and wish to avoid the purchase of: USB cable
From the manufacturer's site:
- RS232 Data Transfer; DTCR-01 Data Cable is required
Looking on Amazon at the transfer cable, the specs:
Now we have the real inquiry for the forum:
I would like to utilize an Arduino board to decode RS232 electronic caliber data and then use USB-HID (keyboard) to connect to my computer for data entry.
What we do not know:
- Is the manufacturer's RS232 really 5V / 3.3V serial in standard RS232 encoding
The cable picture shows a micro-USB connector. That means 4 wires: +, gnd, D+, D- and the positive connection would not be used. USB D-/D+ - Using Arduino / Networking, Protocols, and Devices - Arduino Forum
Personally, I would buy the cable as the price + shipping is reasonable and I would not be monkeying around with my calipers... but, where is the fun in that?
The cable appears to convert the low-level TTL RS232 signal to USB HID (keyboard) so when the foot-switch is depressed, one value gets transferred into the PC application. Different Arduino boards deal with USB input differently, so board selection is important. Then USB-HID must be available for PC connection.