Newsgroups: comp.robotics
Path: brunix!uunet!timbuk.cray.com!hemlock.cray.com!kilian
From: kilian@cray.com (Alan Kilian)
Subject: Re: mc68hc11evb, first time builder, please help
Message-ID: <1992Mar24.153332.2422@hemlock.cray.com>
References: <900196v.1@ace.acadiau.ca>
Date: 24 Mar 92 15:33:32 CST

In article <900196v.1@ace.acadiau.ca>, 900196v@ace.acadiau.ca 
(RONNIE VANDOMMELEN) asked:

      Is the MC68HC11EVB a good board to use in a robot?
      Ronnie Van Dommelen 900196v@ace.acadiau.ca

Yes this is a good board to use in a robot. Here are the good things:

  - Runs on 4.8 Volts (4 X 1.2 Vdc Nickle-Cadmium batteries)
    (You need + and - 12 Vdc on the bench to download software).
  - Has low-voltage cutout at about 3.2 Vdc for when you batteries run out.
  - Has about 20 bits of Digital I/O to run motors or digital sensors
  - Has 8 Analog input lines for variable sensors.
  - Has 8K Bytes of ram. More than you'll ever need.
  - Has two low power standby modes. Can recover automatically from power down.
  - Has many timers.
  - Can time external events without interrupt latency.
  - Connects to host computer through RS232 serial port.
  - Download programs using Kermit.
  - Lots of free software for IBM PC compatibles
  - It's small. About 4 Inches by 6 Inches.
  - It's cheap $170.00
  - If you like the processor it's about $10.00 in small quantities

I am using it's big brother the MC68HC16EVB. It's a 16Bit 16MHZ DSP version
It's larger and uses more power and is more expensive (Although I got mine
during a promotion for $100.00) but it has 2 Pulse Width Modulation outputs.

I have the MC68HC11EVB that I will use on another robot someday.

                  -Alan Kilian


-- 
 -Alan Kilian         kilian@cray.com 612.683.5499 (Work) 612.729.1652 (Home)
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