OLED display - Pixhawk-1 Copter 3.5-RC3 QGCS 3.1.3

ArduCopter Copter 3.5
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1

The Adafruit OLED SSD1306 display can apparently connect to the Pixhawk-1 via I2C.

I have flashed with 3.5-RC3 but cannot see any parameters that affect the display. For example NTF_DISPLAY_TYPE does not exist or is not available via QGCS 3.1.3 . There does not appear to be a parameter to address the device, enable or disable it.

What are the steps necessary to get this to work?

My setup:

Pixhawk-1 (2.4.8 h/w). I2C (0x3D) connected via I2C splitter shared with ext compass and Lidar (0x62). The OLED is from Adafruit - it is a monochrome 128x64px display, with solder jumpers to enable I2C or SPI. This is jumpered to I2C.

2

Do you mean QGC? For 3.5 you should use QGC beta version, otherwise you’ll run into problems. In any case, NTF_DISPLAY_TYPE will be in the full parameter list, have you looked there?

Also, since you are using QGC are you sure you loaded 3.5-rc3? I’m asking because stable QGC can’t find the new firmware, you need QGC beta for that.

3

Thank you!

QGC was v3.1.3. not the beta. As suggested the NTF_DISPLAY_TYPE parameter is there in the daily build.

4

But still no display activity :confounded:

The module works perfectly connected to an Arduino.

At the Pixhawk I2C bus the voltage is 4.3v.

Is there any other action needed to cause the display to light up?

5

No, just setting the type (and rebooting) should be enough. Make sure you have all the correct connections.