(...) I'm a programmer - and I have an evil mind... The train driver spots a JarJar Binks minifig standing at the crossing and with murderous intent he trundles swiftly past X1, X2 and X3 - and then stops...just far enough along to block X4 - but (...) (23 years ago, 15-Jun-01, to lugnet.robotics)
(...) That's what mine does. If any sensor is broken it starts a timer. If no sensors are broken after the timer expires they go up. This worked very well except for very short trains. Hence the plans for a third sensor right near the track to take (...) (23 years ago, 15-Jun-01, to lugnet.robotics)
