Thread: wireless sensors

Hi guys,
I am new here and do not have enough information about electronics. I have a question for you:
I need a system including :
1) a Keyboard or any data entry device
2) 150 small tool boxes which 3 LED's are on their door (say red,yellow and green). one for screws, one for nuts and the other for washers.

The problem is that I want the system to work in a way that by entering some codes from the central Keyboard, the relevant LED of the relevant box becomes On. Wiring is impossible so the system should work wireless. and the boxes are too small to uses modems or big devices for data transmission.

Moreover the system cost is also a big deal.

Thank you
Regards,
Mehran

Originally Posted by Mehrjam

Hi guys,
I am new here and do not have enough information about electronics. I have a question for you:
I need a system including :
1) a Keyboard or any data entry device
2) 150 small tool boxes which 3 LED's are on their door (say red,yellow and green). one for screws, one for nuts and the other for washers.

The problem is that I want the system to work in a way that by entering some codes from the central Keyboard, the relevant LED of the relevant box becomes On. Wiring is impossible so the system should work wireless. and the boxes are too small to uses modems or big devices for data transmission.

Moreover the system cost is also a big deal.

Thank you
Regards,
Mehran

Would like to help but not understanding what you want to do. If you just want to trigger LED's thats easy enough.

Thanks for your consideration. Yes I want to trigger LED's wirelessly. there are 150 boxes, each has 3 LED's. I want to trigger these LED's from one station without any wire.

What I would do is learn just a little basic programing in Assembly language....and use this to control the parallel port on your computer. The parallel port is 8 bits, so that's 256 different combinations...so that would suffice.

Write your program in something like C++, and use the small bits of assembly language as functions. The functions send an 8 bit code to the parallel port which is connected to a circuit of logic gates. Each of your 150 tool boxes would have a small logic circuit that only activates when the appropriate 8 bit code for that box is sent. You can use a couple of the other pins on the PP to indicate what color led will be lit. That's just off the top of my head...it need refinement.

edit....I just read you want wireless..that will take a little more thought.

Tnaks a lot. but yhe whole point is that I want it to be done WIRELESS.
Regards,

Let me think about it M, I'll see if I can come up with something. We would need to attach the output of the PP to a wireless transmitter, that would be recieved by your tool box circuits. I'm brainstorming to see if there is any premade circuit you could use...rather than having to build the thing from scratch.

Yes, suppose there is a tablet or computer for data entry , connected to a transmitter, each of the 150 kits on the box doors also should have a wireless receiver to receive signals for triggering the LED's.

How well versed are you with programming and electronic circuits?

Frankly not at all. But I was encouraged to find a pre-designed device to solve this problem. Is programming the only solution to solve such a problem ?

Regards,
Mehran

For what your describing...yeah.....it's going to need some serious custom work. If you want to just push buttons on a keyboard...that keyboard needs to be connected to a computer, and there needs to be a program to interpet those keyboard commands and there needs to be a circuit that can recieve the commands from the program to do what you want. It's not a novice project...but it is totally doable.

Anyway I will appreciate it if you could help me with that.

Dear Stargate, did you finally get what I mean ?

Originally Posted by Mehrjam

Anyway I will appreciate it if you could help me with that.

You're going to need to find some friends to help you. Especially anyone that can program...and someone who's familiar with digital logic circuits and wireless technology. We can only help you so much....you need people that can actually DO it.

Thank you. that will be awesome.

You could totally learn this yourself...it will just take a year or more.

Thank you MAcGyver