The Handy Board has a USB-serial interface for communications with the host computer.
Handy Board USB-Serial Interface Board
The USB Interface has similar features as the original Serial Interface:
- RJ11 telephone-style cable to connect to Handy Board
- trickle and rapid charge modes for Handy Board’s built-in nicad battery
- charge circuit powered by external 12v, 500mA DC adapter
It also provides communications with the Handy Board via the USB connection. The board has a driver chip from FTDI; download the “VCP” (virtual COM port) driver for your operating system (Windows, Mac, or Linux) from http://www.ftdichip.com/Drivers/VCP.htm.
Here is a schematic of the USB Interface Board. In addition to connecting to the Handy Board’s serial communications lines, the USB board also provides 0.1” headers for connecting to your own TTL-level serial circuit. Pads for supplying +5v, ground, TxD, and RxD are available.
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Please tell me what ports to use for the Optical Rangefinder and for encoders.
Thanks in advance for your time.
Pedro A
do you have a part list for the usb interface board
I have the serial interface with a serial to usb connector connecting it to my windows 7 computer. When I open up IC, it just shows the default com port 1 and nothing else. This is not the right port and I cannot connect to my handy board. I installed the VCP driver but still nothing works. Any thoughts?
It sounds like your USB-serial adapter doesn’t have its driver installed right. Check the System Properties for COM ports; it should show up there. Make sure you have the right driver given the manufacturer of the adapter.
Hello,
I was wondering what settings you used to the the ftdi232RL to work in bootstrap mode. I have a ftdi usb adapter but I can’t seem to the the timing worked out. Thank you very much.
If I remember correctly, the HC11’s bootloader operates at 1200 baud. But this is all handled by Interactive C and its “download firmware” function. You shouldn’t have to separately set serial parameters, unless you’re writing your own bootloader.
If you are writing your own bootloader, I have a simple one written in Java. See http://www.cs.uml.edu/~fredm/courses/91.305-fall02/ and look at Assignments 3 and 4.