trying to ustoe uno r3 to connect gsender. when connected tx and rx amber lights flash amber rapidly. what does this mean? Or could someone help me step by step
Hi @1jeep. The LEDs marked "RX" and "TX" on the UNO R3 board indicate communication through the board's serial port ("RX" stands for "receive" and "TX" stands for "transmit"). Since serial communication is used by "gSender", the LEDs blinking is normal and expected and indicates that there is communication between the UNO board and the gSender application.
So I think all is well and you can carry on using the UNO R3 and gSender as you intended.
If you are encountering an actual problem instead of only being concerned that the blinking LEDs might be a bad sign, then the forum helpers may be able to assist you with that.
thank you . cant get steppers to turn but may be my power supply.
Please read and use this link: How to get the best out of this forum - Development Tools / IDE 1.x - Arduino Forum
How do You think helpers could give any useful advice out of what Yo've told??
As i said it may be my power supply!