So you would like to turn your old typewriter into a Bluetooth keyboard for your iPad? The Bluetooth USB Typewriter Conversion Kit has you covered. You don’t need any special tools or soldering to get started. The kit simply fits onto the undercarriage of your typewriter and lets you use it as a keyboard for your computer or tablet.
You will just have to make sure to pick the right typewriter make and model. Costs $135 at this time.