Arduino tx led flashing amber - Recovery Vehicle Single LED Light Amber - Hobbyking
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Install the Arduino Software (IDE) on Windows PCs. This document explains how to install the Arduino Software (IDE) on Windows machines
Arduino Install Examples. TX and RX yellow Arduino diodes flashing. it starts running on the Figure 10. you should see the amber (yellow) LED on the board.
Flashing the OpenPilot bootloader on a CC3D or Flashing Beta Connect to Tx on your and you should end up with a most happy CC3D and a flashing blue LED.
Pixhawk goes straight to flashing amber main led. ArduPlane. but this unit is too complex and I have no Arduino experience so I'm outa radio (TX) in MP, then.
This LED is built onto the Arduino board and is often referred to as the 'L' LED as this is how it is labelled on the board.