[Tatsfield]

The "Braille Button" works well but there is still an overwhelming urge to look down at the switches to see which LED is illuminated. I added two additional bumps so that I can slide my finger left or right from the centre to operate all the buttons without too much thought. Even once the rep[eaters are installed, the "Braille Buttons" will remain to allow operation without looking down. I'm feeling a little more confident about the repeater LED mod now that I understand the parameters. The only missing detail is the value of the protective resistors that I need to choose to wire into the LED lines if they have not already got them pre-wired. I'm investigating that now.