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| -rw-r--r-- | docs/feature_split_keyboard.md | 20 |
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diff --git a/docs/feature_split_keyboard.md b/docs/feature_split_keyboard.md index f054f365b6..b234114200 100644 --- a/docs/feature_split_keyboard.md +++ b/docs/feature_split_keyboard.md @@ -237,6 +237,26 @@ This sets the maximum timeout when detecting master/slave when using `SPLIT_USB_ ``` This sets the poll frequency when detecting master/slave when using `SPLIT_USB_DETECT` +## Hardware Considerations and Mods + +While most any Pro Micro can be used, micro controllers like the AVR Teensys and most (if not all) ARM boards require the Split USB Detect. + +However, with the Teensy 2.0 and Teensy++ 2.0, there is a simple hardware mod that you can perform to add VBUS detection, so you don't need the Split USB detection option. + +You'll only need a few things: + +* A knife (x-acto knife, ideally) +* A solder station or hot air station +* An appropriate Schottky diode, such as the [PMEG2005EH](https://www.digikey.com/en/products/detail/nexperia-usa-inc/PMEG2005EH,115/1589924) + +You'll need to cut the small trace between the 5V and center pads on the back of the Teensy. + +Once you have done that, you will want to solder the diode from the 5V pad to the center pad. + +You may need to use the 5V pad from the regulator block above as the pads were too small and placed too closely together to place the Schottky diode properly. + + + ## Additional Resources Nicinabox has a [very nice and detailed guide](https://github.com/nicinabox/lets-split-guide) for the Let's Split keyboard, that covers most everything you need to know, including troubleshooting information. |