How about a two-key version that uses morse code? one key for dash, the other for dot. Or maybe the third key on the threeboard could be space / stop? (one pres

How about a two-key version that uses morse code? one key for dash, the other for dot. Or maybe the third key on the threeboard could be space / stop? (one press for space, two presses for stop?) Could be neat for kids to learn morse code