diff --git a/LINKS.md b/LINKS.md
new file mode 100644
index 0000000..5551573
--- /dev/null
+++ b/LINKS.md
@@ -0,0 +1,6 @@
+USART CMSIS docs: https://arm-software.github.io/CMSIS_5/Driver/html/group__usart__interface__gr.html
+stm32 usb hid: https://damogranlabs.com/2018/02/stm32-usb-hid-mouse-keyboard/
+arcade hid: https://github.com/pellepl/arcadehid
+cycle counter: https://stackoverflow.com/questions/11530593/cycle-counter-on-arm-cortex-m4-or-m3
+stm32 hid: https://pixcl.com/stm32cubemx-truestudio-and-custom-hid-code/
+usb descriptor decoder: https://eleccelerator.com/usbdescreqparser/