One of my friends caught me today and he needs my help to design a circuit for him. He would like to design a museum narrative push button circuit. (You know one of those things where you press the button near a display and it tells you one of those long boring history stories). Unfortunately, I am only a beginner in the digital electronics world and I only have experience working with LEDs, resistors, capacitors, transformers, 74LSxx IC chips and PLDs. I use MulitSim 10 (from National Instruments) to draw my circuit designs. This circuit will later be breadboarded, and then put together on a PCB.
I was wondering if there was someone who would be telling me how to create and design this circuit, or if someone can design a schematic for me. I need two revisions of the circuit, 1) One revision that runs off of a battery 2) Another that runs from a standard United States household plug-in (110 volts). I need to know a way to program these with the narrative voice (Needs to be tamper-proof, so maintenance or the public could not erase or record over the narrative) and when you push the button it plays back and shuts off when it is finished.
[Or instead of the battery circuit you can help and find some other form of power that would not be costly over time but still be portable]
Thanks in advance,
JayGun
I was wondering if there was someone who would be telling me how to create and design this circuit, or if someone can design a schematic for me. I need two revisions of the circuit, 1) One revision that runs off of a battery 2) Another that runs from a standard United States household plug-in (110 volts). I need to know a way to program these with the narrative voice (Needs to be tamper-proof, so maintenance or the public could not erase or record over the narrative) and when you push the button it plays back and shuts off when it is finished.
[Or instead of the battery circuit you can help and find some other form of power that would not be costly over time but still be portable]
Thanks in advance,
JayGun