Differences

This shows you the differences between two versions of the page.

--- 2022_ball_presence_sensors [2023/01/19 23:16] – [Second Version: DIO Tester + Proto PCB] tell
+++ 2022_ball_presence_sensors [2023/01/19 23:20] (current) – [Third Version: custom PCB] tell
@@ Line 61: / Line 61: @@
 ===== Third Version: custom PCB =====
+We looked into doing a complete PCB for the banner-sensor adapter circuit, but never completed it.
+One idea for that board was to include two transistors, signal LEDs, and DIO output connectors.
+That's right, two.  There are actually two output wires from these sensors.
+The stock standard black-colored Banner Engineering proximity sensor, available from digikey, has both normally-open an d normally closed contacts.
+The yellow ones we were given by another team has a normally-open signal, and another signal wire that seems to indicate when the signal on the first wire is reliable, or if the light returned from the detected object is weak.
+Hooking up both outputs to the control computer could enable it to determine if the sensor is connected properly, but the software would have to be different for the black vs. yellow versions.