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| author | mrcodetastic <12006953+mrcodetastic@users.noreply.github.com> | 2024-12-08 00:15:38 +0000 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-12-08 00:15:38 +0000 |
| commit | 2f7f5350e588d415a098ee859d625534fb17f882 (patch) | |
| tree | a395c1979df1b791e0ef2e50698605e557e38767 | |
| parent | a5d6611b65c365a252e6787e0afc267cf63c1996 (diff) | |
Update README.md
#704
| -rw-r--r-- | README.md | 5 |
1 files changed, 5 insertions, 0 deletions
@@ -239,6 +239,11 @@ An example: dma_display->setLatBlanking(2); ``` +## Clock Phase +If you are facing issues with pixels being 'off' by 1 px to the co-ordinate requested, or experiencing ghosting, then it could be due to the 'clock phase' setting. For some panels data is clocked 'in' with negative clock edge, others with the positive. + +By default this library is configured to 'clock data' in with a positive clock edge. To change this, configure with `mxconfig.clkphase = false;`. Refer to the [example](https://github.com/mrcodetastic/ESP32-HUB75-MatrixPanel-DMA/blob/a5d6611b65c365a252e6787e0afc267cf63c1996/examples/1_SimpleTestShapes/1_SimpleTestShapes.ino#L98) for the relevant line that is commented out. + ## Power, Power and Power! Having a good power supply is CRITICAL, and it is highly recommended, for chains of LED Panels to have a 1000-2000uf capacitor soldered to the back of each LED Panel across the [GND and VCC pins](https://github.com/mrfaptastic/ESP32-HUB75-MatrixPanel-I2S-DMA/issues/39#issuecomment-720780463), otherwise you WILL run into issues with 'flashy' graphics whereby a large amount of LEDs are turned on and off in succession (due to current/power draw peaks and troughs). |