I crimped the sides of the connectors together to tighten their grip on the DSKY pins, which gave me enough security to complete some experiments. These connectors form a rectangular box, with one of the short ends missing, which allow me to bend those ends closer together forming a sort of triangular shape.
EXPERIMENTS WITH THE PANEL
The Electroluminescent (EL) panel I am working with has two known problems. The front glass has a crack in it, whose effect on the internal structure and function is unknown. Also, the two ground pins 155 and 156 should be a virtual short to each other, as they collectively provide a ground connection across the entire face of the panel; these have a resistance of more than a kilohm between them.
I hooked my power up to pin 156 for ground and to pin 157, which should illuminate the steady features of the panel. These are three horizontal lines that separate the three five-digit register values, plus a rectangular lit box to highlight the text labels NOUN, VERB and PROG. No sign of a glow.
I hooked the power up to pin 154 which should light the larger rectangle under the COMP ACTY label. I saw a tiny green dot, probably where the wire is bonded to the segment, but no glow across the rest of the feature.
I then wired up two hot lines to a pair of segments on a digit of the PROG section and saw them light up. Not super bright but clearly working. This tells me that I need to do more investigation of both the delivered power from the AC supply and to test many other segments to see what lights up properly.
 |
| Lighting PROG digit 1, segments F and K |
No comments:
Post a Comment