jakeselectronics
Member
After doing a couple of PCB designs for a mate I was eager to design my own.
I came up with the idea for circuit that converts a decimal/hexadecimal number from a matrix keypad to a binary number .
This is basically what the PCB does.
By using a 74HC164 shift register, It is possible to get 8 bits/a byte of data from the outputs lines.
It also has push-on push-off outputs and momentary on outputs.
It comes in handy for things like manually testing LCD's or chips that require an SPI interface.
It is shown assembled on my new site and there is also a YouTube Video: Jake's Electronics | Kits, Tutorials, Projects and More.
Or click the attached file to see the PCB...
I came up with the idea for circuit that converts a decimal/hexadecimal number from a matrix keypad to a binary number .
This is basically what the PCB does.
By using a 74HC164 shift register, It is possible to get 8 bits/a byte of data from the outputs lines.
It also has push-on push-off outputs and momentary on outputs.
It comes in handy for things like manually testing LCD's or chips that require an SPI interface.
It is shown assembled on my new site and there is also a YouTube Video: Jake's Electronics | Kits, Tutorials, Projects and More.
Or click the attached file to see the PCB...