Hallo TrainMen,

im Datenblatt (Link) steht:

THERE ARE THREE POSSIBILITIES TO USE LED BACKLIGHT IN ANAG VISION CHARACTER MODULES.

1. DRIVING THE LED THROUGH A CURRENT LIMITING RESISTANCE (RA) WHICH IS ALREADY INCLUDED IN THE LCM, BY EXTERNAL 5V TO J1 AND J2 BETWEEN PIN 1 AND PIN 2.

2. PROVIDING 5V BY PIN 15 AND 16 OF THE INTERFACE TO DRIVE THE LED, J15 AND J16 MUST BE SHORTENED AND RA = 3~7 OHMS IN THIS CASE.

3. PROVIDING 4.2V BY DIRECT CONNECTION TO THE LED THROUGH A CURRENT LIMITING RESISTANCE.
Was ist mit J1/J2 und J15/J16 gemeint? Sind das die Pins? Finde die Beschreibung etwas widersprüchlich.

Am Pin 15 kommt nichts an mit obigem Code und Aufbau. Und direkt Pin 15 an 5V legen traue ich mich nicht.