| [simpits-tech] I really should have seen this coming... [message #1677] |
Tue, 07 September 2010 14:23  |
 Gene Buckle
Messages: 1071
Registered: January 2009 |
Senior Member
Administrator |
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Ok, so I get all hyped up about my 16 channel output board and how I'm
going to make life easier for a bunch of people, etc, etc, etc,
ad-nauseum.
It's Arduino based (http://www.arduino.cc if you've been living under a
rock) and easy to use.
I was researching how to talk to an MCP23S17 in order to design a
diode-less massive input board.
Then I find this.
http://macetech.com/store/index.php?main_page=product_info&a mp;cPath=4&products_id=23
64 channels of I/O that fits right on top of an Arduino Duemilanove board.
$18.
You hear that sound? It's my forehead slamming into my desk top.
Repeatedly.
You can get an Arduino Duemilanove from eBay for about $20. More if you
buy one from those crazed digital crack dealers over at SparkFun
(http://www.sparkfun.com, $29.95 + shipping).
You can stack two of those Centipede boards on to a single Arduino board,
resulting in 128 channels of I/O (mix and match in any form) for less than
$75. Assembled.
I'm going to shelve work on my 16 channel board - there's no real point to
it any longer. I'll likely consume the boards on various random projects.
I'm going to order a couple of those Centipede boards and update the
firmware I wrote for the Gazoutta16 to work with it.
Note that if you also go get a Mux Shield and another Arduino board (the
Mux Shield and Centipede both use pins 4 and 5 so you can't share them on
a single Arduino) you can get 48 10 bit analogs going too. Using PPJoy
(creates virtual joystick devices) and it's accompanying SDK, you can
pretty much do whatever you like at prices that essentially take the bar
to entry and run it through a wire extrusion die a few hundred times. :)
g.
--
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
http://www.simpits.org/geneb - The Me-109F/X Project
ScarletDME - The red hot Data Management Environment
A Multi-Value database for the masses, not the classes.
http://www.scarletdme.org - Get it _today_!
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| Re: [simpits-tech] I really should have seen this coming... [message #1678 is a reply to message #1677 ] |
Tue, 07 September 2010 14:36  |
Gene Buckle
Messages: 1071
Registered: January 2009 |
Senior Member
Administrator |
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On Tue, 7 Sep 2010, Gene Buckle wrote:
(forgot to add something...)
The chips the Centipede uses can't direct-drive loads greater than what an
LED would typically consume (20mA each - the chip has a max of 24mA, per
pin). However, they can source enough current at 5VDC to easily drive
what is known as a "logic-level" MOSFET. This means that you can build a
little circuit to use MOSFETs to drive relays, motors, incandescent bulbs,
or other devices that require more than 20mA at 5VDC to run.
A good choice for driving lamps is a BS270. It comes in a TO-92 package
and is dirt cheap. They'll handle 400mA, which is perfect for lamps and
can handle up to 60VDC. If you have a really high power need, the IRL620
comes in a TO-220 package and will handle up to 10A at (I think) over
100VDC.
Here's a nice description of using a MOSFET as a switch, using the BS270
part mentioned earlier:
http://brunningsoftware.co.uk/FET.htm
g.
--
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
http://www.simpits.org/geneb - The Me-109F/X Project
ScarletDME - The red hot Data Management Environment
A Multi-Value database for the masses, not the classes.
http://www.scarletdme.org - Get it _today_!
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| Re: [simpits-tech] I really should have seen this coming... [message #1680 is a reply to message #1677 ] |
Tue, 07 September 2010 15:00 |
Sean Galbraith
Messages: 252
Registered: February 2009 |
Senior Member |
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But, but, but....
Wow... aint the internet great for crushing brilliant ideas?
In other news... still getting aftershocks of up to 5.4 here in
Christchurch.... means working from home, and writing VB.NET stuff for
my sim :)
SeanG
-----Original Message-----
From: simpits-tech-bounces@simpits.org
[mailto:simpits-tech-bounces@simpits.org] On Behalf Of Gene Buckle
Sent: Wednesday, 8 September 2010 9:24 a.m.
To: simpits-tech@simpits.org
Subject: [simpits-tech] I really should have seen this coming...
Ok, so I get all hyped up about my 16 channel output board and how I'm
going to make life easier for a bunch of people, etc, etc, etc,
ad-nauseum.
It's Arduino based (http://www.arduino.cc if you've been living under a
rock) and easy to use.
I was researching how to talk to an MCP23S17 in order to design a
diode-less massive input board.
Then I find this.
http://macetech.com/store/index.php?main_page=product_info&a mp;cPath=4&produ
cts_id=23
64 channels of I/O that fits right on top of an Arduino Duemilanove
board.
$18.
You hear that sound? It's my forehead slamming into my desk top.
Repeatedly.
You can get an Arduino Duemilanove from eBay for about $20. More if you
buy one from those crazed digital crack dealers over at SparkFun
(http://www.sparkfun.com, $29.95 + shipping).
You can stack two of those Centipede boards on to a single Arduino
board,
resulting in 128 channels of I/O (mix and match in any form) for less
than
$75. Assembled.
I'm going to shelve work on my 16 channel board - there's no real point
to
it any longer. I'll likely consume the boards on various random
projects.
I'm going to order a couple of those Centipede boards and update the
firmware I wrote for the Gazoutta16 to work with it.
Note that if you also go get a Mux Shield and another Arduino board (the
Mux Shield and Centipede both use pins 4 and 5 so you can't share them
on
a single Arduino) you can get 48 10 bit analogs going too. Using PPJoy
(creates virtual joystick devices) and it's accompanying SDK, you can
pretty much do whatever you like at prices that essentially take the bar
to entry and run it through a wire extrusion die a few hundred times. :)
g.
--
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
http://www.simpits.org/geneb - The Me-109F/X Project
ScarletDME - The red hot Data Management Environment
A Multi-Value database for the masses, not the classes.
http://www.scarletdme.org - Get it _today_!
_______________________________________________
Simpits-tech mailing list
Simpits-tech@simpits.org
http://www.simpits.org/mailman/listinfo/simpits-tech
To unsubscribe, please see the instructions at the bottom of the above
page. Thanks!
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| Re: [simpits-tech] I really should have seen this coming... [message #1683 is a reply to message #1680 ] |
Tue, 07 September 2010 19:36 |
Gene Buckle
Messages: 1071
Registered: January 2009 |
Senior Member
Administrator |
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On Wed, 8 Sep 2010, Sean Galbraith wrote:
> But, but, but....
>
> Wow... aint the internet great for crushing brilliant ideas?
>
Well you know, in this case it was a good thing. I've spent way too much
time woring on things that make things easier for other folks to get into
this hobby and I've ended up neglecting my own for far too long.
Nothing provides a wake up call like finding out you blew over $250 for no
real good purpose. :)
> In other news... still getting aftershocks of up to 5.4 here in
> Christchurch.... means working from home, and writing VB.NET stuff for
> my sim :)
>
Jeeze, someone forgot to tighten down the last few bolts apparently. :)
Take a peek at Dictionaries Sean.. They're a very handy thing when you're
working with collections of objects.
g.
--
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
http://www.simpits.org/geneb - The Me-109F/X Project
ScarletDME - The red hot Data Management Environment
A Multi-Value database for the masses, not the classes.
http://www.scarletdme.org - Get it _today_!
_______________________________________________
Simpits-tech mailing list
Simpits-tech@simpits.org
http://www.simpits.org/mailman/listinfo/simpits-tech
To unsubscribe, please see the instructions at the bottom of the above page. Thanks!
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| Re: [simpits-tech] I really should have seen this coming... [message #1684 is a reply to message #1682 ] |
Tue, 07 September 2010 19:44 |
Gene Buckle
Messages: 1071
Registered: January 2009 |
Senior Member
Administrator |
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On Tue, 7 Sep 2010, David C. Allen wrote:
> At 07:28 PM 9/7/2010 -0700, you wrote:
>> On Tue, 7 Sep 2010, David C. Allen wrote:
>>
>>> So maybe you should stick with Phidgets! LOL
>>>
>> $100 for a 0/16/16 vs $75(max) for an Arduino and two Centipede boards
>> that provide 128 general purpose I/O lines. It's not exactly much of a
>> race. :)
>
> That's the amount for led's but for 28vdc lamps the price go's up
>
> It's service after the sale that counts!
>
Agreed, but the Arduino solution is more for people that more into
low-level DIY than the average sim geek.
g.
--
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
http://www.simpits.org/geneb - The Me-109F/X Project
ScarletDME - The red hot Data Management Environment
A Multi-Value database for the masses, not the classes.
http://www.scarletdme.org - Get it _today_!
_______________________________________________
Simpits-tech mailing list
Simpits-tech@simpits.org
http://www.simpits.org/mailman/listinfo/simpits-tech
To unsubscribe, please see the instructions at the bottom of the above page. Thanks!
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