Subject:
|
Re: Hardware mods to the RCX
|
Newsgroups:
|
lugnet.robotics
|
Date:
|
Sun, 27 Oct 2002 09:10:33 GMT
|
Viewed:
|
967 times
|
| |
|
|
Matt Lawrence wrote:
> Ok, I'm interested in doing some hardware mods to a few RCX bricks to get
> better communication. So here are a couple of questions:
>
> 1. Has anyone published an actual schematic of the 1.0 RCX?
>
> 2. Has anyone already designed a USB interface to the RCX?
>
> I'm thinking about either designing or (hopefully) finding a small USB to
> serial TTL daughterboard that can be easily (for some value of easily)
> installed inside the brick.
FDTI chips are very easy to use, look at
http://www.dontronics.com/dlp.html
or
http://www.ftdichip.com/
I'm thinking about using the power from the
> USB connection to open relays to the IR section so that I can run serial
> at 38400 full duplex. Ideas?
Maybe there some usefull links at the next page under the block
"Mindstorms Internals"
http://oase.uci.kun.nl/%7Emientki/Lego_Knex/Lego_mindstorms_knex_index.htm
Replace the IR components by a serial connection won't be difficult,
because IR sending is just modulated RS232 and receiving is even
demodulated in the IR-receiver component, so it's RS232.
The most difficult part will be to modify the firmware to handle the
higher frequences.
Succes,
Stef Mientki
>
> -- Matt
>
> From my heart and from my hand, why don't people understand my intention?
>
>
|
|
Message has 1 Reply:
 | | Re: Hardware mods to the RCX
|
| (...) Actually, I was hoping to leave the existing IR circutry in place and just switch it out when a cable is connected. That should give me backwards compatability. As far as the firmware, I expect to be writing my own code in Forth, so shifting (...) (22 years ago, 27-Oct-02, to lugnet.robotics)
|
Message is in Reply To:
| | Hardware mods to the RCX
|
| Ok, I'm interested in doing some hardware mods to a few RCX bricks to get better communication. So here are a couple of questions: 1. Has anyone published an actual schematic of the 1.0 RCX? 2. Has anyone already designed a USB interface to the RCX? (...) (22 years ago, 27-Oct-02, to lugnet.robotics)
|
9 Messages in This Thread:
  
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
This Message and its Replies on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
