Using a Second Keyboard as Programable Keypad
Most programable keypads are expensive, over $80. But, the best solution is just to get a cheap keyboard and make all its keys as macro keys.
You can make a second keyboard to act independently, so can be used as a dedicated macro keyboard.
This gets you 80 or 120 extra keys, at a price of $15 or so.
Here's how-to for Microsoft Windows.
This can also be done in Linux. But i haven't figured it out yet. It'll take a day or two to figure out.
The problem with this approach is:
- You have to spend significant amount of time to make it work
- You have to know programing a little.
- You won't be able to plug the keyboard in another computer to expect it to work. You have to spend hours to configure it again.