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Topic: Centipede Shield - also a contest! (Read 7 times) previous topic - next topic


Nov 09, 2009, 12:53 am Last Edit: Nov 09, 2009, 12:57 am by kyndal Reason: 1
i'm working on a multifunction Alarm system
that needs a loot of  I/O

2x   keypad.LCD,Speaker,key,RFID type "door units"
      Separate micro  "Serial protocol"

1x   www, email, IM, text message  
     alarm indication and remote control interface "Serial protocol"
     Embedded linux,  "dd-wrt, NSLU2"  

16x window sensors
4x   glass break sensors (analog piezos)
4x   PIR motion sensors (on/off)
4x   Smoke/Fire alarm inputs (on/off)
1x   powerfailure sense  (Tamper, Fridge, freezer )
      (on/off maby analog Temp)
2x   "Guest" "door bell"  zones (mailbox and driveway visitor sensors)

2x   outdoor siren, Beacon light (on/off)
2x   indoor alarm siren (on/off)
4x   indoor lights interface (on/off)
2x   outdoor floodlight  (on/off)
1x  SD-Card  for Storage of "event log"  

All of the units need a "TAMPER" sensor, but this can be as simple as just one wire through them all in serial (if broken)

interface to camera server (unknown.  Rs232?)

so yea.. looks like i need Some additional I/O's for the Arduino.
or maby just something bigger ;)


im working on a project for a friend. what i call a "magic" hallway. using a sonar sensor, many pir sensors and a ton of led lights.  as one walks through the hallway, the light follows them. get brighter as they get closer and the gradually dimishes as the move away from the light. funny, i was looking into i2c protocol for this project, and then you come out with a shield that would be perfect


I'm working on building a custom control interface for a model train set my dad is building.  He's gotten pretty ambitious with the track layout, and I know I'm going to need more than 20 i/o pins on the arduino for all the electrical elements I'm going to have to control.

Essentially, we're going to be using multiple arduinos (or maybe just one with a centipede shield) communicating with a touchscreen UI running on some sort of embedded device to control all of the track elements (turnouts, forward/reverse, engine speed, turntables, sound effects), lighting effects (buildings and such), and some safety systems (the layout includes a couple turnaround loops and it's conceivable we'd have two trains on the same loop at the same time - the arduino could shut down an entire loop automatically if it detects a problem).

I originally submitted this for the Nokia n900 push project.  Sadly, it was rejected.  We're moving forward with the build, though.  I'm probably going to re-purpose a TI Beagleboard for the user interface, since it's silent and the serial USB connection with the arduino should be trivial to set up.  Either that or a Nokia N810 or a Pandora handheld -- haven't decided which one I think I can spare yet.  :D

Some of the technical considerations for this project can be reviewed at rootaction.net/~boltonc/train.pdf  Ignore the prototype track; we're skipping that step and working directly with the final track layout.

We're also looking into what kind of stepper motor we would need to build our own custom turn-table, and whether it would be more cost-effective than purchasing one at retail.

The project is long-term, but is already under way.  We finished building the table top this afternoon.  It's sectional in 6 pieces since the overall layout is 10x12 feet.  We'll be getting together in another week or two to finish the structural build (assemble legs and casters on each section and bolt them together), after which we'll be working independently; he'll lay the track while I start prototyping circuits.  It'll take us a month or two before we're ready to put it all together.  I'm not sure if that meets your requirement for 'something plan to build immediately' or not, but I do know the centipede shield will save me some coding and cash.

Even if you don't decide to throw a freebie my way, I'm interested in purchasing one when you're ready to start selling them.  Do you know yet when that might be and/or where you'll make them available?


I would like to interface with a relay board - probably dead-bug style - to switch line current to many several channels of animated christmas lights.

I foresee needing near 50 channels to have a truly explosive experience.  So far my plan involves using shift registers - which I'm quite comfortable with working on, but this board would simplify things greatly...That, or I pick up an arduino mega.

Then it's just a matter of writing sync software.


ok macegr,
heres my idea.  I want to make a cheap and fast motor control system for robotics.  something like the sony aibo used to use...1 brain with tons of sensor in and coordinated servo control with balance...something that stabilizes my robotics platforms as a standard.  then others can implement my code base and control system for their robots.  If every one of us makin robots has to teach them all how to balance and self correct, this will take forever.  If i make a fast atmega328 program and a custom app for motor control,  i can create a standard kit for robotics platforms that is cheap and EASY....so hook me up bro... i need that shield for some serious I/O.  awaiting that PM.  Legion.

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