My first basic question is which arduino board will i need to purchase? ... It has to control a few PIR sensors
that in return control the whiper motors back and forth
1x arduino, uno or Duemilanove (which do you guys recommend?)
...1x arduino, uno or Duemilanove (which do you guys recommend?)5x whiper motor, car salvagejard5x PIR sensor (http://www.samenkopen.net/action_product/927767/1053145x solid state relays (link: http://www.sparkfun.com/products/10636)
- About the Wiper motors: you have different ones, 1 type rotes a krank inside, but some others don't , they can rotate back or forth by reversing the motor.
OK, So what I think I understand:- You want motors to be able to act as a "winch" or "Crane", rolling a cable or string up, and rolling it back down again.totally right i have the knowledge to create that, no problem i did it before.- So you need to be able to reverse the motors, right?Jesssss! an up and down motion.- You have some windshield wiper motors but you do not want to use the back-and-forth movement, and you will remove that part??the motors i have chosen have no back and forth movement in them. They move just in 1 direction all the time, only when i switch the wires it goes the other way.Just like a normal dc motor.- You will have to attach some "drum" or "Spool" to wind the cable on.i already created the spool.- You need to know when the weight is at the top, and stop the motor.yes i think this is able to program?- You need to know when the weight is at the bottom, and stop the motor. right!More questions:?? How heavy is the weight the weight is about 1 kg?? How long do you want it to take to go from bottom to top / not fast, just the top speed of the motor 80 rpmOK, I see the Video and idea... - So the weight does not need to stop at the bottom?? No this time it has to stop on his own! that's why i want to use the arduino and not the switch i used in the video.Details! That's what Engineering is about i understand, you give me the questions that are relevant, very helpfull! thanks
Hi Doerack!I'm a 20 year old Megatronics student also from Holland, nice to see I'm not the only one here.I discovered Arduino just this morning and, though I'm still totally new to Arduino in particular my education does cover these fine electronics and scripting so as I get to know the Arduino systems better I may be able to help you out as a fellow Dutchman.Groeten van Rik!
Hee Terry again great ideas, I suppose you like to educate others? Great help indeed!- You need to stop, run and reverse the motors. Two Single-pole Double-Throw relays can do that. When one relay is activated the motor would run in one direction, the other relay activated and it runs the other direction. No or both relays activated and motor stops. I already thought of that, i think it's the best way to go.- You most probably need limit switches at the top and bottom of travel. I already made an limit switch on the other project from the movie, it worked fine - Just time will not be accurate enough. - Counting turns could work, but you still need a known starting point - You need limit switches for safety - Limit switches should shut off the active relay and signal Arduino. Then Arduino can turn that relay off and later activate the other relay for the other direction. - The cable could run through a hole in an arm on a "microswitch" with a "bump" in the cable that catches the switch and switches it.- Safety: you should probably measure the usual start/run current on each motor and connect a fuse that will blow if the motor is stalled because something failed and the motor is trying to wind the weight around the drum. So, you might use a pair of relays for each motor like these: http://arduino-direct.com/sunshop/index.php?l=product_detail&p=171 DISCLAIMER: I mentioned stuff from my own Shop...! But you can buy these other places too. They already have transistor drivers for the relays so Arduino can run them directly. Or you can build your own.. (The schematic diagram is on the Relay page).. I suggest you prototype one part of this at a time.. You can obviously build good things.. this is just a different set of tools and materials...Make sense??Makes allot of sense, first i will order all the materials, then just starting to figure out how i can make 1 of part work. (dc motor, 2 relays, PIRsensor, and an Arduino)I'll keep you posted!Last question so far: Do you know how to incorporate the PIR sensor? Do I need a sensor shield? (i'm working with 5 PIR sensors, each has to work seperately from the others)I've send you a personal message concerning ordering parts from your website