diff --git a/docu/motor_shield_issue.txt b/docu/motor_shield_issue.txt
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+See: https://github.com/wemos/WEMOS_Motor_Shield_Arduino_Library/issues/1
+
+Possible solution: Reprogram STM32 on the shield:
+https://hackaday.io/project/18439-motor-shield-reprogramming
+
+Can be done only with wemos:
+https://github.com/thomasfredericks/wemos_motor_shield