Go to Post Pictures are worth a thousand words... cell phone pics are worth 750. - kramarczyk [more]
Home
Go Back   Chief Delphi > Technical > Technical Discussion
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
 
 
Thread Tools Rate Thread Display Modes
Prev Previous Post   Next Post Next
  #1   Spotlight this post!  
Unread 13-04-2003, 05:25
AlbertW's Avatar
AlbertW AlbertW is offline
harker robotics :. 1072
AKA: Aonic
#1072 (Harker Robotics)
Team Role: College Student
 
Join Date: Oct 2002
Rookie Year: 2003
Location: San Jose, CA
Posts: 323
AlbertW is on a distinguished road
Send a message via AIM to AlbertW
Replacing the Radio Modem.

Face it... the current Innovation FIRST Radio Modem sucks. It's based on old technology, is proprietary, expensive, draws alot of power, and can easily interfere with even a cordless phone.

We need something new and revolutionary. (That IS what FIRST is about, right?) We need Bluetooth wireless transcievers. There are plenty of advantages to this:
  • It's cheap. A bluetooth chipset costs around $10 right now, and it's slowly going down.
  • No interference. Even though Bluetooth uses the cluttered 2.4 ghz ISM (Industrial/Scientific/Medical) band, it uses DSSS frequency-hopping (1.6 thousand times per second) to avoid interfering with other bluetooth and ISM devices. Think about it, being able to use the radio in the pits without interfering with another robot's operation. A targeted frequency scrambler (to disable a specific bot) wouldn't work because bluetooth doesn't use discreet channels in the ISM band.
  • Low power. A bluetooth chipset transmitting at short range (10 m) draws in the hundreds of milliwatts range, and the range can be up to 100 m.
  • Bluetooth is a serial interface. You could use the same bluetooth chipset that you use to control the robot to reprogram it. You could get a wireless data readout about all the variables and PWM states on the RC without being tethered to it.
  • Bluetooth chipsets are small. You could easily build one into the OI itsself, and wouldn't need an external radio modem.

That's all I can think of right now...
__________________

We were the first seeded first-year team at a first-year FIRST regional.

Last edited by AlbertW : 13-04-2003 at 05:40.
 


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
reworking radio control for joysticks ajlapp Electrical 5 05-12-2003 17:38
How to communicate both through radio and serial port? JC Denton Programming 1 08-02-2003 23:43
radio transmitters Arin Technical Discussion 2 18-12-2002 01:59
antenna on operator side radio modem archiver 2001 4 24-06-2002 01:37
90 degree robot modem connector archiver 2001 10 24-06-2002 00:03


All times are GMT -5. The time now is 04:20.

The Chief Delphi Forums are sponsored by Innovation First International, Inc.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright © Chief Delphi