Add submission # 6227

#6227

Author: ArduinoBot

registry.txt

@@ -8078,3 +8078,4 @@ https://github.com/CheezCheez/CheezsEMG.git|Contributed|CheezsEMG
 https://github.com/TheKvc/ServoHack.git|Contributed|ServoHack
 https://github.com/microbotsio/CodeCell-MicroLink.git|Contributed|CodeCell MicroLink
 https://github.com/miniiot/miniiot-arduino.git|Contributed|MiniIot
+https://github.com/fanfanlatulipe26/ESP32_ppm.git|Contributed|ESP32_ppm