Update repositories.txt (#6029)

electrocoder · web-flow · commit a09ef7dc9c0e · 2025-03-09T17:35:34.000Z
A simple and flexible Modbus RTU slave library for Arduino.
diff --git a/repositories.txt b/repositories.txt
@@ -7858,3 +7858,4 @@ https://github.com/RedPitaya/SCPI-red-pitaya-arduino
 https://github.com/ripred/Minimax
 https://github.com/francescop75/LCD_TeleType
 https://github.com/ArduLite/ArduLite
+https://github.com/electrocoder/MBModbusRTUSlave
