Lights for models

[goo67]

0
I have a circuit of LEDs - say L1-L10. My requirements:

1. No visible switch
2. Illuminate the LEDs successively (only ever one at a time) every time the user passes a magnetic "wand" over the switch. (Mode 1-10)
3. Using the same "wand" permit the user to set the circuit to an automatic mode whereby an LED lights for a few seconds then the next, etc. Again only one LED at a time. (Mode 11)
4. Permit the user to turn on all LEDs simultaneously. (Mode 12)
5. The circuit should remember which Mode was last enabled when reactivated.
6. Battery operated 9V.

I've seen kits advertised with this type of feature using a reed switch. Thus far I've been unable to locate any information on how such a switch is used to change modes. Can anyone help me find out how this is done? Ic ?

 

[rjenkinsgb]

That would be operated by a microcontroller (PIC, Arduino etc.) with a program to give the effects.

The reed switch is electrically just a switch, same as a pushbutton switch, connected to an input with a pull-up or pull-down resistor. The program monitors the switch input and changed mode or sequence when that is operated.