Subject:
|
Digital Output
|
Newsgroups:
|
lugnet.robotics.handyboard
|
Date:
|
Tue, 22 Sep 1998 06:41:13 GMT
|
Original-From:
|
Mark Limb <s003348@student.uq+nomorespam+.edu.au>
|
Viewed:
|
1210 times
|
| |
|
|
Hi,
I am working on a totally autonomous sumo wrestling robot, using the HB
as its brain. I have interfaced sensors to it, and even designed a high
current motor driver circuit to directly interface to the existing L293D
inputs (Info available on request). My main problem is, I have designed
an Infra Red proximity sensor based on a sharp TV IR demodulator. This
reciever recieves 600 microsecond pulses modulated using a 38KHz
carrier. I have generated the 38kHz carrier using a 555 timer chip, and
I am using the HB to pulse this wave at 600 microsecond intervals. To
do this I need a digital output port, as 9 of the HC11 digital ports are
assigned to inputs, I was wondering what the easiest way to access two
digital outputs, (SPI an option?),
Thanks for your help
Joshua Wherrett
|
|
Message has 1 Reply:
2 Messages in This Thread:
  
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
