electronic circuit problem and fsm

[farahrw]

hi..
1)how to drop 4~5V to 1~2V? i have try used the parallel resistor n bulb, but still not get the result.

2)now im doing project-vending machine by using de2 board altera..how to design 4 product for 3 different price which is 1.20, 1.40, 1.60
the insert coin is 10,20 and 50 cent..can u give the fsm block diagram for this project..

 

[tony_lth]

1. you can use OpAmp to do that easily. Just minus 3V, OK.
2. I don't understand your question, so many abbre.?

 

[farahrw]

can u show the schematic diagram for opAmp?

vending machine-input coin 10,20,50cent
there are 4 product for each price which is $1.20(4 product), $1.40(4 product) and $1.60 (4 product) that's mean total products is 12.
i just wanna program for one product and one price which is $1.40 only..
i can figure out total of state that need to used for one product..can u?

 

[Pheetuz]

If your trying to drop the voltage down, you could consider using a zener diode between the point where you want to drop the voltage and ground, wired up so that it will only conduct at over 1~2 volts, this will keep the voltage at a steady 1~2 volts?

Dont really understand the rest of your post, sorry I can be of more help.

 

[farahrw]

it's about finite state machine (fsm). display on altera DE2 board

 

[jducluzeau]

For your FSM, only the price select the product or are there some others inputs?
4 products for 3 prices how to know for product at the same price?