Add submission # 291

ArduinoBot · ArduinoBot · commit 576bd3ff93bc · 2021-07-28T03:10:28.000Z
#291
diff --git a/registry.txt b/registry.txt
@@ -4210,3 +4210,4 @@ https://github.com/AeroboticsGlobalTeam/AEBO.git|Contributed|AEBO
 https://github.com/m5stack/MODULE_GRBL13.2.git|Contributed|MODULE_GRBL13.2
 https://gitlab.com/riva-lab/SimpleBME280.git|Contributed|SimpleBME280
 https://gitlab.com/riva-lab/SimpleMeteoCalc.git|Contributed|SimpleMeteoCalc
+https://github.com/hideakitai/ESP32SPISlave.git|Contributed|ESP32SPISlave
