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Palm Portable keyboard to Usb or Bluetooth

 I am trying to figure out how to convert this Keyboard to either USB or bluetooth any help is helpful. It is a Palm Portable Keyboard. If you need more information or pictures please ask. 

Picture of Palm Portable keyboard to Usb or Bluetooth
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alanmcrae2 years ago

I have a Palm Portable Keyboard V Series that I would also like to convert either to standard usb for connection to a Windows PC or infrared to connect to my Fujitsu Stylistic Tablet. Since these quality foldable keyboards are now available at very cheap prices, it might be very useful to find an inexpensive way to provide more universal connectivity for them. Anybody have any ideas about how we could achieve this?

arpruss2 years ago

You might find a place in the keyboard where you have a TTL-level UART output. Then send that output to an HC-06 Bluetooth module set to the correct baud rate, and you've got data going out. You still need a driver on the PC side, since this is RFCOMM, not HID. For Android, you should be able to modify my code for the palmOne IR keyboard: https://github.com/arpruss/p1keyboard . In fact, if you're lucky, it uses the same protocol and you don't have to modify it at all. If you do have to modify it, have a look at the IR keyboard's protocol, as described here: https://www.instructables.com/id/Use-Palm-infrared-keyboard-with-Android-devices/

arpruss2 years ago

You might find a place in the keyboard where you have a TTL-level UART output. Then send that output to an HC-06 Bluetooth module set to the correct baud rate, and you've got data going out. You still need a driver on the PC side, since this is RFCOMM, not HID. For Android, you should be able to modify my code for the palmOne IR keyboard: https://github.com/arpruss/p1keyboard . In fact, if you're lucky, it uses the same protocol and you don't have to modify it at all. If you do have to modify it, have a look at the IR keyboard's protocol, as described here: https://www.instructables.com/id/Use-Palm-infrared-keyboard-with-Android-devices/

MarioD22 years ago

hi, some time ago I have been studying this possibility, "I'll take a bit of water to rinse :)" keyboard communicates abroad for RS-232, it means that the decoder ic UR5773A keyboard has a ttl serial communication where its output is converted to RS-232.

Moreover, the arduino nano when connected to pc is recognized as a USB keyboard.

I have two theories to test.

a) identify those pins in the deco and connect to an arduino nano, creating a program in nano receive which sends the ic deco and transfer it to the TX usb microcontroller.

b) the same as in step a) but instead of sending it to TX micro usb connect to a bluetooth antenna connected to the nano.

are two programs with some minor differences but I think most accessible point a) if this works would try the b)

I have all the materials to make two points but still I could not get the technical data UR5773A ic deco.

arpruss2 years ago

While searching for information on how to convert a PalmOne Wireless keyboard to USB, I think I saw some information about this keyboard. I think it's RS-232 serial, and the Palm connector pinout should be available somewhere online.

You could bridge from RS-232 to Bluetooth (e.g., a voltage divider to reduce to TTL levels and an HC-06 module?), but this would only give you RFCOMM, not HID profile, in Bluetooth. But if you could then write a custom driver (or IME on Android) that interprets the data.

I am thinking of doing this myself with my PalmOne Wireless (except that there one needs to bridge from irDA--or its electron version--to Bluetooth).

Any luck in creating or finding an adaptor to be able to use this keyboard via USB?

caitlinsdad3 years ago
http://wb9kzy.com/palm.htm is one, 

I
  saw another IBM to palm converter circuit too. I guess you could hook it up to the guts of another wireless keyboard to use.  Good luck.