Add submission # 2515

#2515

Author: ArduinoBot

registry.txt

@@ -5704,3 +5704,4 @@ https://github.com/Marthaarman/dmx-transceiver.git|Contributed|DMX Serial Transc
 https://github.com/SpaceTrekKSC/classbot2.git|Contributed|SpaceTrek_ClassBot2
 https://github.com/SpaceTrekKSC/BQ25887.git|Contributed|BQ25887
 https://github.com/fanfanlatulipe26/XGZP6897D.git|Contributed|XGZP6897D
+https://github.com/ExperimentalCyborg/PicoStep.git|Contributed|PicoStep