Add submission # 297

ArduinoBot · ArduinoBot · commit 56ce866691d0 · 2021-07-29T18:19:27.000Z
#297
diff --git a/registry.txt b/registry.txt
@@ -4214,3 +4214,4 @@ https://github.com/hideakitai/ESP32SPISlave.git|Contributed|ESP32SPISlave
 https://github.com/Zentser/esp-zentser-sdk.git|Contributed|Zentser ESP SDK
 https://github.com/SergeSkor/SSVLongTime.git|Contributed|SSVLongTime
 https://github.com/SergeSkor/SSVAnySensor.git|Contributed|SSVAnySensor
+https://github.com/SergeSkor/SSVNTPCoreClass.git|Contributed|SSVNTPCoreClass
