PDA

View Full Version : Two-stage prop controller for 2010


Otaku
03-17-2010, 07:21 PM
My entry this year is a two-stage prop controller. It uses a PIR sensor that's hacked from the Talking Pumpkin Insert sold at Radio Shack. The controller has two timers - one for controlling the prop "on" time and one for locking out the PIR sensor so that the prop can't be re-triggered until the time expires. As built, the range is 0 to ~55 secs for each time period. This can be changed by using a different value potentiometer. The PIR is very sensitive up to a distance of ~15 feet. Except for the PIR, all parts are available at All Electronics.

Yeah, I know it's not really a prop, but it was a lot of fun to make. Enjoy!

Here's the parts list:

Source P/N Item Cost Qty

AE LM556 556 0.45 1
AE ICS-14 14 pin IC socket 0.20 1
AE 104D50 0.1 disc cap 0.40 4
AE 100 uF radial cap 0.30 2
AE PC-3 Perf board 1.50 1
AE Resistor, 100K ohm. 1/4W 0.20 4
AE Resistor, 390 ohm, 1/4W 0.10 1
AE Resistor, 100 ohm, 1/4W 0.15 3
AE LTP-500K 500K linear pot 1.50 2
AE TB-3 Enclosure 2.50 1
RS 6300282 Talking Pumpkin Insert 0.97 1
AE MPSA13 Darlington transistor 0.10 1
AE 78M05 5VDC reg 0.50 1
AE RLY-537 12VDC 10A relay 1.60 1
AE RLY-622 12VDC 2A relay 1.50 1
AE 1N4001 Diode 0.14 2
AE 1N4148 Diode 0.14 2
AE MTS-4 SPDT toggle switch 1.00 1
AE TB-7 12-pos barrier strip 0.50 1
AE CON-243 3-pin connector / header 1.00 1
AE TER-502 Terminal block - 2-position 0.40 1
AE PS-1236 12VDC 300mA power supply 5.50 1

Total cost = $20.55

And here's a picture of the finished controller:

RoxyBlue
03-17-2010, 09:35 PM
It's so cute:) Would this be used primarily to control movement?

Otaku
03-17-2010, 09:50 PM
Cute, eh? Thanks!
Depends on the prop that's attached to it. It controls a 10A relay for switching AC or DC power to a prop, motor, lights etc.

Wildcat
03-17-2010, 10:04 PM
Very cool.

ScreamingScarecrow
03-17-2010, 10:15 PM
One of these days I'm going to have to get into the technical part of the haunting game...
When I do - it looks like I'll need to be talking to you Otaku!
I will become your grasshopper!

hpropman
03-17-2010, 10:37 PM
Very cool Otaku! I like it. I really need to get you up to speed with the picaxe it would have reduced the part count. My picaxe book it just about ready for the first release with everything you need to get started with them. The later chapters will come out in groups as I write them.

halstaff
03-17-2010, 10:37 PM
He is a very patient teacher. But beware, it can be addicting.
I've built this 2 of these timers and they work great!

Joiseygal
03-17-2010, 11:22 PM
So sorry for sounding blonde, but this can convert a prop with DC current into AC current? It also has a motion sensor? If it doesn't convert the props current and has the motion sensor only than this beats the price of what I paid for my motion sensor. I would love to know how you did this cause I would love to make a few of these when I get more familiar with electronics.

Otaku
03-17-2010, 11:41 PM
No, it can't convert power from AC to DC. The motion sensor is very good quality, and will reliably "see" you from up to 15 feet away. Placing that 3" piece of tubing on the sensor makes it very directional. It's not a necessary part of the controller, but it helps. I may be putting together a how-to soon. I already have the circuit drawing and I'll be posting it in the next day or so.

steveshauntedyard
03-18-2010, 12:35 AM
Too cool Otaku.

Joiseygal
03-18-2010, 02:00 AM
I bought my motion sensor for $40 on ebay a few years ago. If I can make a motion sensor that can pick up motion 15 ft away for half the cost than that would be great! Looking forward to seeing your how to. :) Great Job Gary!

dave the dead
03-18-2010, 04:59 AM
This is really cool Otaku! I am always blown away by the way you can envision this type of electronics project and make it a reality. It is still very intimidating to me, but your explanations make this type of project achievable for the 'electronically challenged' among us. Thanks for taking the time to work this out, and thanks for being so open with sharing the inner workings. You are an all around good guy and an asset to this community!

morbidmike
03-18-2010, 06:45 AM
I agree with dave ....your are so talented and make such awsome electronic devices I cant wait to see the how too I might have to experiment I too am very leary of electronic's oh yeah great entry

heresjohnny
03-18-2010, 08:30 AM
Outstanding Otaku, once again you have designed a circuit for us haunters! I have one of those Radio Shack pumpkin things thanks to you, and I plan on building one of these as soon as I finish some post $20 prop honey do's.

Otaku
03-18-2010, 10:13 AM
Thanks to all for the kind words. Giving credit where it's due, I want to thank Diabolik, a Halloween Forum member, for bringing the Pumpkin Insert to my attention. While playing with the Insert I realized that the PIR sensor had lots of other uses. I stripped out the Insert - for ~$1 you get a great sensor, some useful parts and several ultrabright white LEDs. Not bad.
Here's the circuit drawing for the controller. The view is from the top of the perf board and shows an optional item, the bi-color LED in the top right corner. The LED can be attached to the 556 IC outputs allowing you to see what the controller is doing (green light = prop on, red light = PIR lockout mode, no light = waiting for next victim). Click on the title bar of the Photobucket frame to see the drawing.

http://i73.photobucket.com/albums/i231/Otaku1031/Two-stagepropcontrollerrev6layout.gif

Denhaunt
03-18-2010, 02:28 PM
Very cool. Just out of curiosity, what are you going to use this for? Is it designed for outdoor use?

Dr Morbius
03-18-2010, 02:32 PM
Very cool, Gary! What everyone else said, plus YOU ROCK!

Otaku
03-18-2010, 02:43 PM
Very cool. Just out of curiosity, what are you going to use this for? Is it designed for outdoor use?

Thanks, Den. You can use it outdoors, but like any electrical device you would want to keep it dry. The sensor appears to be sealed pretty well, so you may be able to expose it to moisture, but you'd want to protect the circuit box.
As far as outdoor functionality goes, I've tested the sensor in my front yard at night and had no issues.
I'll be using this to trigger my animated coffin, some sound effects and lights and the modified grave jumper that I'm working on. With the 10A relay switching the power, it can easily handle a wiper motor's needs.

spideranne
03-18-2010, 09:09 PM
Very nice. I'm so glad there are people like you who can figure all this out and are willing to share so we can all copy, even when we really don't know what we're doing.

The Watcher
03-19-2010, 06:39 AM
This is great, I love it. I know how much these are needed after last year. The wind was blowing so hard here, all my outside sensors kept going off. Will you be posting a picture of the inside of the box. Sometimes seeing it makes it easier for me to follow. At least without messing up a few times.

Otaku
03-19-2010, 12:20 PM
Very cool, Gary! What everyone else said, plus YOU ROCK!

Thanks, Doc! Projects like this are a lot of fun to build. For those who would like to build one of these controllers, please see this thread:

http://www.hauntforum.com/showthread.php?t=20860

(I didn't want to go off-topic here)

Lilly
03-20-2010, 11:13 AM
Nice Job Otaku, as always!

psyko99
03-21-2010, 02:33 PM
Awesome prop controller Otaku! It's good to see an electronic entry into the challenge.

Zurgh
03-23-2010, 10:50 AM
Nice! I like this, as it autonomously automates & activates a prop. Good job! Your making me want to pick up me ol' soldering iron again...

nixie
03-23-2010, 11:34 AM
...I wish I understood this techinical stuff.:( It looks brilliant though!

Otaku
03-23-2010, 03:25 PM
Hi all,
Here are some pics of the top and bottom of the controller board. As you can see, there's a lot of soldering involved. There aren't a lot of components, but you need to lay out power rails to make the IC and relay connections easier. I probably won't be doing a how-to for this circuit, as there's a much easier alternative available now. Let me know if you have any questions.

http://www.hauntforum.com/picture.php?albumid=569&pictureid=6958

http://www.hauntforum.com/picture.php?albumid=569&pictureid=6957

beelce
03-23-2010, 03:38 PM
WAY COOL !! Otaku...
I for one love it, and will need a detailed "how-to" to understand how it works

Terrormaster
03-23-2010, 03:55 PM
Otaku that is totally awesome. Would love to see this attached to a prop for a demonstration on how it can be used (I'm a visual kinda guy, those word things confuse me). And like others have said, nice to see something electronic in the contest.

Otaku
03-23-2010, 07:52 PM
Would love to see this attached to a prop for a demonstration on how it can be used (I'm a visual kinda guy, those word things confuse me).

Thanks, Terrormaster!
I'm working on a new motorized prop as we speak. It was inspired by Denhaunt's awesome Grave Jumper:
http://www.hauntforum.com/showthread.php?t=17229&highlight=grave+jumper

I plan to have the prop controller switch on the motor and a set of lights when a kid gets near. I'm also trying to get the prop to activate it's own sound system when it starts moving.

halstaff
03-23-2010, 08:01 PM
Thanks, Terrormaster!
I'm working on a new motorized prop as we speak. It was inspired by Denhaunt's awesome Grave Jumper:
http://www.hauntforum.com/showthread.php?t=17229&highlight=grave+jumper

I plan to have the prop controller switch on the motor and a set of lights when a kid gets near. I'm also trying to get the prop to activate it's own sound system when it starts moving.

That's exactly what we need!

Hellrazor
03-25-2010, 12:27 PM
very interesting.

Sickie Ickie
03-29-2010, 05:41 PM
Otaku- my electrical hero- awesome yet again!

IMU
04-04-2010, 05:48 PM
Very nice for a tech guy! LOL Great work. :)

STOLLOWEEN
04-04-2010, 06:54 PM
Cool entry...you just may have given me the motivation to add some electronics to my display...thanks for making it all understandable!

fravak
04-04-2010, 11:10 PM
That's great Otaku! I must build a couple of these this year, and the price can't be beat.

Volscalkur
05-01-2010, 06:54 PM
Excellent build!
A prop controller for under $20! :)
All the electronics that goes into animatronic props is so fascinating! Someday I will understand, right now it's all just magic! :D

Meeps
05-02-2010, 02:26 AM
Gonna have to try this. Thanks!

Devils Chariot
05-06-2010, 08:22 PM
I aspire to be able to build this one day! Thanks Otaku!

Otaku
05-07-2010, 12:10 AM
I aspire to be able to build this one day! Thanks Otaku!

It's easier than you think. Jeff at SCB has a printed board ($7 shipped) for this controller that you just solder the parts onto. Add the sensor, the pots, a terminal strip and a project box and you're good to go. It costs a bit more than the scratch-built controller but you'll save a ton of assembly and troubleshooting time.