PROBLEM with 434MHz RF (UART) Transceiver on Arduino Nano

[azam]

Hi, i have a problem here. Everything is wire like in your tutorial with lm35. Nothing happen. I use ftdi board and arduino nano. This board will be use in our school competition on 19 august. We design tank robot with gps. Now i am start to worry and sweat. Already try with picmicro controller.. Same result. Help us

[ober]

Hi, please do share the actual hardware setup.

Since you use Arduino Nano, is there any response before you use wireless? It should have send data via the USB to Serial monitor.

[azam]

thanks for fast reply, yes everything working great if i remove rf module and direct connect via usb. when i unplug usb cable from nano the use 9V battery through Vin and Gnd. and power up another RF module with FTDI board my computer just can detect new COM but no data receive

[azam]

can u tell me how to check the status of RF module? try to pull down the SET to ground and SEND AT Command but nothing happen

[ober]

A few clear photos of the actual hardware will be helpful.

[azam]

after troubleshoot with AT command. one of the board are not responding. that how they cannot communicate with each other. competition are getting close.

[sich]

Sorry that I can't see clearly the connection of your transceiver. Are the UART pins connected correctly?
Eg:
FTDI Tx to RF1 Rx
FTDI Rx to RF1 Tx
Arduino Nano Tx to RF2 Rx
Arduino Rx to RF2 Tx

If you want to enter AT command mode, the best practice would be to power off the module, pull SET pin to low level and wait for at least 1 sec. The module will be in AT mode (you can send AT command now) until the SET pin is released from low level (either left disconnected or pulled to high). After released the SET pin, module will apply the settings requested by you in AT command.