Based on the the CD4000 and 74HC-series integrated circuits (and perhaps the 555 timer), I need a schematic that implements the following logic (in general):
1) Move a motor (lift) up or down for a predefined time (in seconds)
2) Time could be configured via 8-stage DIP switch
3) An emergency break should also be included (either in Normal Open or Normal Close manner). It should trigger reset to the time and toggle the direction of the next movement.
4) Start condition should be enabled as series of 3 square pulses.
Expected ICs to be involved include:
NE555P - Timer 555 (at ~2Hz, used as Clock for the entire circuit)
CD4020BE - 14-STAGE BINARY/RIPPLE COUNTER
CD4040BE - 12BIT BIN RIPPL COUNTER
CD4060BE - 14-STAGE COUNTER/DIVIDER AND OSCILLATOR
CD4013BE - 2 D-TYPE FLIP-FLOP
CD4093BE - 4x2-INP NAND SCHMITT TRIGGER
CD4081BE - QUAD 2-INPUT AND GATE
CD4021BE - 8-STAGE STATIC SHIFT REGISTER
74HCT109 - 2 J-K FLIP-FLOPS WITH PRESET AND CLEAR
SN74HCT00N - 4x2-INP NAND
SN74HCT04N - 6 INVERTER
CD4001BE - 4 x 2 INP NOR
Note: Please stick to them because of the availability in our region.
Questions, suggestions and recommendations are always welcome. I can also help the freelancer with my knowledge in case you require assitance from my side (this will not affect the negotiated payment). ;)
I need a prototype as an idea (on a breadboard). PCB design is not mandatory.
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hi dear, I just read out your description and i am interested in your project. Am expert in Electronics and also done with it. if you need quality work than feel free to contact me. Thanks.