Anyone an electronics expert? September 07, 2010, 11:08:10 AM Here is what I am trying to do.Using a 2 button remote and transmitter (similar to remote lock unlock), I would like to use 1 button to activate a random timer (5-15) seconds. That timer would then power a linear actuator for approx. 5 second. After that 5 seconds I would like everything to reset until the button is pushed again.The second button would be used to activate a car starter. This time amount should be adjustable for fine tuning.I would like to keep everything 12v for simplicity as the device will need to be portable where there is no electricity.It is a project I am working on to get my Mechanical Engineering degree. Any help would be appreciated. If anymore info is needed, please don't hesitate to ask. Thanks in advance. Quote Selected
Anyone an electronics expert? Reply #1 – September 07, 2010, 07:29:00 PM Just use something like this:http://cgi.ebay.com/4-Ch-RF-Controller-Wireless-Remote-Control-Basic-Stamp-/320517506609?pt=Radio_Control_Vehicles&hash=item4aa0550631Connect it to a Basic Stamp (or any other microcontroller) if you are so inclined. If you don't know about basic stamps, you should get a kit and learn about them :).A good place to shop for basic stamps, sensors, etc is http://www.hvwtech.com/ (I'm not affiliated with them, but I have bought stuff from them and had good experiences) Quote Selected
Anyone an electronics expert? Reply #2 – September 07, 2010, 11:18:00 PM look into 555 timer chips. Sadly I don't remember hardcore electronics. I have an electronics degree from 13 years ago and work in the medical equipment service field but lately its easier and cheaper to just swap boards and almost impossible to do component level repairs in the field due to multi-layer surface mount boards etc.. This stuff just gets forgotten over the years when you don't use it :(But basically pick up a breadboard, some timers chips, other components and try and find some schematics online. good luck. When you come up with a working schematic post it I'd like to see it. Quote Selected
Anyone an electronics expert? Reply #3 – September 08, 2010, 07:50:35 PM Just get a stamp like mentioned above. For fun, you could check out mp3cars.com, and control it all with a computer. Quote Selected
Anyone an electronics expert? Reply #4 – September 13, 2010, 08:52:16 AM Using anything to that needs to be connected to a computer for programming is out. We need something that is simple and field servicable without any major "tools", and that includes a laptop. The project we are building is a starting gate for a motocross track. We are making it as a practice gate to get a better hole shot. After we present the project, it is going to be partially buried out in the middle of a field at the guys house who is part of our group. Good thing is he is footing the bill for everything since he will be keeping it. So the "plan" I have come up with is to use a randomizing IC such as a decade counter, and tie the outputs of it to a NOTC (normally open timed closed) relay. They each have a 5 second delay. So for 5seconds use 1, 10 seconds use 2 etc...We are going put all electric components in a waterproof box, run the wires out and silicone the holes around the wires.Don't have a working schematic yet, but hope to by the end of the week so we can start assembly and testing next week. Quote Selected
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