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-rw-r--r--docs/feature_rgb_matrix.md17
1 files changed, 16 insertions, 1 deletions
diff --git a/docs/feature_rgb_matrix.md b/docs/feature_rgb_matrix.md
index 2e88ae4727..9eaf63d710 100644
--- a/docs/feature_rgb_matrix.md
+++ b/docs/feature_rgb_matrix.md
@@ -667,7 +667,22 @@ In order to change the delay of temperature decrease define `RGB_MATRIX_TYPING_H
#define RGB_MATRIX_TYPING_HEATMAP_DECREASE_DELAY_MS 50
```
-Heatmap effect may not light up the correct adjacent LEDs for certain key matrix layout such as split keyboards. The following define will limit the effect to pressed keys only:
+As heatmap uses the physical position of the leds set in the g_led_config, you may need to tweak the following options to get the best effect for your keyboard. Note the size of this grid is `224x64`.
+
+Limit the distance the effect spreads to surrounding keys.
+
+```c
+#define RGB_MATRIX_TYPING_HEATMAP_SPREAD 40
+```
+
+Limit how hot surrounding keys get from each press.
+
+```c
+#define RGB_MATRIX_TYPING_HEATMAP_AREA_LIMIT 16
+```
+
+Remove the spread effect entirely.
+
```c
#define RGB_MATRIX_TYPING_HEATMAP_SLIM
```