Hi,
I have almost the same problem as droter and kbcopter in this forum. My observations:
One of the 3DR radios (433 mhz vers.) seems to be ok but I am not sure. It flashes the green LED, but the red LED is NOT flashing upon power up. It seems to respond to the 3DR radio config tool - i.e. it is able to load settings, save settings, and upload firmware. The green LED is blinking and the red LED is reacting to the config tool when an AT command is sent to it. However, it cannot seem to connect to APM Planner 1.1.88 and has an error message of "No Heartbeat packets received". When I try the config in APM Planner I am able to load settings, but I cannot upload firmware giving an error message unlike using the 3DR Radio config software. This radio's noise level is almost the same level as the RSSI level. It fluctuates but on the average its the same on the 3DR config tool. Another issue, it does not save new settings (e.g. tried tx = 20), and loads previous settings.
The other 3DR radio is solid green LED and flashing red LED (1 sec. interval) on power up. 3DR config tool cannot connect at load settings and save setings giving an error message of "Failed to enter command mode". With the upload firmware button it gives an error of " Failed to identify Radio". However, if I short the CTS and GND pins before power up as mentiond on the 3DR page, this radio goes solid red (correctly entering bootloader mode) and I am able to upload firmware. The red LED also seems to be reacting properly to the upload. Unfortunately, after flashing it goes back to solid green LED.
It seems that the radios I got are bad too.
Help!
Replies
Hi Serg, i am experiencing the similar problems with my new system. The ground stations radio always blinks its green led, while the hexcopter(remote) radio is solid green with a few red flashes every second or so. Ive noticed that the remote knows when i plug in the ground stations radio, because its green led changes from flash to solid when i connect.
I can upload firmware to my ground stations radio but thats about it. The ground stations radio never sees the remote.
Besides defective radios, is there anything else to change ?
Lastly, Im thinking of switching radios, removing the remote from the hex and connecting to my computer and vice versa so i can upload firmware and adjust settings to the radio that was the remote but is now the ground stations.
Defective radio was replaced. New one did not bond with other radio. Checked frequency parameters and matched them on both radios using list boxes: MIN FREQ set at 433000 and MAX FREQ at 434700. Saved params to radios.
Radios WORK now!
Not sure though what should be correct frequency range. Will get that sorted soon.
Where did you get these radios? 3DR is not yet selling 433s with the USB connection because they need to be revised. If you bought one of those from another source, they are pirated clones and will not work.