I want to build an array of single inputs to a digital circuit to give 7 output signals to operate 7 relays to push button, and when i remove the input signal they revert back to the rest position until the next input signal, similar to say a keyboard when you press a key a music note is a mixture of several notes combined to give you the full chord say C,E,G = C CHORD in the same way I would like to press single buttons to give the same result ie pressing
button a,b,c.d.e, will give me 5 different combinations of 7 relays ie to play 7 different horns at once, Im afraid this is the only way I can explain my plight
Thank you for time.
eric992

 

Is that 5 buttons to control five different sequences for 7 relays?

Can you generate a map or table of the relays to energize for each of the buttons.

 

The number of combinations of 5 buttons from the set of 7 horns ?

http://www.mathwords.com/c/combination_formula.htm

Answer is yes its possible to do this. A LUT would accomplish this.

Regards, Dana.

 

Sounds simple enough. The digital solution is seven 5-input OR gates.
You can also do it with a bunch of diodes.

Give us the specifications of the relays, i.e. relay voltage and current.

 

Is that 5 buttons to control five different sequences for 7 relays?

Can you generate a map or table of the relays to energize for each of the buttons.

Thank you for your reply, I think I have found the answer, I can use a circuit for a 7 segment
digital display to give me the outputs I need
Thanks again eric992

 

Is that 5 buttons to control five different sequences for 7 relays?

Can you generate a map or table of the relays to energize for each of the buttons.

Thank you, I will now use a 7 segment display driver

 

Sounds simple enough. The digital solution is seven 5-input OR gates.
You can also do it with a bunch of diodes.

Give us the specifications of the relays, i.e. relay voltage and current.

Sounds simple enough. The digital solution is seven 5-input OR gates.
You can also do it with a bunch of diodes.

Give us the specifications of the relays, i.e. relay voltage and current.

Thanks for your reply, I have had a brain wave thanks to you, a seven digital display
driver will do the job

 

The number of combinations of 5 buttons from the set of 7 horns ?

http://www.mathwords.com/c/combination_formula.htm

Answer is yes its possible to do this. A LUT would accomplish this.

Regards, Dana.

Thanks for your reply unfortunately I don't know what a A LUT is
Thanks anyway eric992

 

A LUT is a look up table.

https://electronics.stackexchange.c...ce=google_rich_qa&utm_campaign=google_rich_qa

A 7 segment display driver will not generate all possible combinations of 5 buttons from 7 horns.

Regards, Dana.

 

A LUT is a look up table.

https://electronics.stackexchange.c...ce=google_rich_qa&utm_campaign=google_rich_qa

A 7 segment display driver will not generate all possible combinations of 5 buttons from 7 horns.

Regards, Dana.

Thank you for that observation but I am going to use at least two circuits to give me more scope and or add more circuits'
thanks again eric992