Hello,
Here is my design of Microcontroller based 4 channel input selector.
brain of this kit is 89C52, which is programmed for LCD interface, front panel with button and LED's it supports PSU signaling for Standby and Active mode.
After power on it goes to "Standby" mode, on press on button it goes into "Active" mode & prompts for channel selection, upon press of button it changes channel, same is displayed in LCD.
Front panel button and LED:
Two buttons for Power on an other for Channel Select.
Two LED , Power on off LED and Button press response LED with option for buzzer (5 volts beeper) on board.
Individual switching of each channel using 3 pole 2 way relays.
Sechmatic and PCB Layout shared.
Thank you
Sudheer
Here is my design of Microcontroller based 4 channel input selector.
brain of this kit is 89C52, which is programmed for LCD interface, front panel with button and LED's it supports PSU signaling for Standby and Active mode.
After power on it goes to "Standby" mode, on press on button it goes into "Active" mode & prompts for channel selection, upon press of button it changes channel, same is displayed in LCD.
Front panel button and LED:
Two buttons for Power on an other for Channel Select.
Two LED , Power on off LED and Button press response LED with option for buzzer (5 volts beeper) on board.
Individual switching of each channel using 3 pole 2 way relays.
Sechmatic and PCB Layout shared.
Thank you
Sudheer