• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Micro Controller Switcher Help

Status
Not open for further replies.

Fuad

New Member
Hi, i need help i would to have the following but dont have any idea how to do it:

- i would like to have a micro controller pref. PIC16F84 circuit with 4 switches connected to it VSource1, VSource2, VSource3, VSource4 these switches would be the input for the output i want it to do 2 things
a) always when the power is on the PIC assumes Source1 is on if any switche is pressed the micro controller would send a pulse to the source connection coressponsing to the source if source3 is pressed it would send 2 pulses which simulates if the source switch is pressed twice, then it will store the current souce if source4 is pressed it will send 1 pulse
b) coressponding to the sources there are 2 audio souces. audio source1 would be for VSource1, Vsource3 and VSource4, audio source2 would be for VSource2 i want the PIC to control the 2 audio sources accordingly.

i dont know how to design the audio source circuit in has 2 inputs and 1 output with PIC controlling which source is on.


also i would like to know how to make a voltage regulator with the following values:
inout voltage is Car 12V
1) 12V 1.25A Voltage Regulator
2) 5V 2.4A Voltage Regulator

Thank you
 

Madmartin

New Member
At least for the switching I'd take a look at
4016
4051
4052
4053
or the classic
4066

They are analog switches, controlled by logic level inputs (from your pic)
For the PIC: study it's datasheet and write a program that does, what you want. Be sure to clamp some good tantalum capacitors across its power supply near it's pins, otherwise PICs may be quite a noisy nuisance in audio circuits. Also debounce your selector switches inputs, either in real world or in the PICs programme.
 

kinjalgp

Active Member
Or try ADG411 - Precision Switches for low voltage drop across the switch.
 
Status
Not open for further replies.

Latest threads

EE World Online Articles

Loading
Top