add some notes

README.md

@@ -1 +1,19 @@
 # blunderboard
+random notes
+
+## serial console
+https://www.tal.org/tutorials/raspberry-pi-zero-usb-serial-console
+`cu -d -l /dev/ttyU0 -s 115200` or equvivalent
+
+## wifi
+`sudo rfkill unblock all && sudo reboot`
+`sudo raspi-config` or edit /etc/wpa_supplicant/wpa_supplicant.conf
+
+## enable ssh
+`systemctl enable ssh`
+
+## blunder definition (lichess)
+https://github.com/ornicar/lila/blob/master/modules/analyse/src/main/Advice.scala#L79
+
+## go package zum anflanschen
+https://github.com/notnil/chess