I made this flexible keyboard from a plastic and stiff keyboard. I made it to make my raspberry pi totally compact and portable.
Step 1: Open Up The Keyboard
You need to open up the keyboard. To do so you need to remove all the screws from the bottom.
Step 2: The flexible sheet
Once you open it you will find a transparent sheet. This sheet is the flexible keyboard. The sheet looks like this.
Step 3: Removing the sheet and circuit board
In my keyboard there was a circuit board attached to the sheet and the plastic hard base, so i had to remove the screws keeping everything together in order to get rid of the plastic base. When the screws are removed the circuit board and the sheet detaches.
Step 4: Connecting the circuit board and the sheet
This is a tricky part. To connect both you need both to be in the correct place so that it works. Once its been placed you tape the connection tightly to secure the connection of the board and the sheet. THE TAPE NEEDS TO BE TIGHT. To make the connection better i took robber bands and put it around the tape and the took a strip of metal and securely tied it tightly on the tape and rubber bands with a nylon thread.
Step 5: Letter and number the keyboard
Referring to the plastic keyboard stick the numbers and the letters correctly on the sheet.
Step 6: Complete
This can be now rolled up and can be taken anywhere.
Step 7: Connected to my Raspberry Pi
It work properly and is totally flexible making it easy to carry.