This is a solution for the above problem, when the telemetry air module is connected to the PC using the FTDI MODULE / USB TO TTL CONVERTER.
POSSIBLE REASONS :
- any two devices when connected to the same COM port - arises this problem
- Absence of required USB TO UART BRIDGE CONTROLLER drivers i.e of versions 6.7.5 / 6.7.6
SOLUTION 1 :
- Type device manager in the start menu and open it
- connect the air module
- check it’s presence in PORTS ( COM & LPT ) section
- Check if any other device is connected in that section other than the air module
- Disable the other device and try using mission planner.
This is solution 1. if this doesn’t work please follow solution 2 below
- install x64 drivers by dowloading it from the below link
CP2102 USB to UART Bridge Driver | USB Driver
- download CP 210X drivers version 6.7.6
CP210x USB to UART Bridge VCP Drivers - Silicon Labs
- DEVICE MANAGER → AIR MODULE → RIGHT CLICK → UPDATE DRIVERS → BROWSE MY COMPUTER FOR DRIVERS → BROWSE TO THE CP 210X drivers version 6.7.6 FOLDER → CLICK OK.
- Now try it out in the MISSION PLANNER. it definitely works.
Below is a scientific explanation of the problem, if you have some time give it a read to understand the problem clearly.
I HOPE YOUR PROBLEM IS SOLVED…HAPPY DRONING
SCIENTIFIC EXPLANATION OF THE PROBLEM
- The FTDI module you’ve connected doesn’t operate with the Universal serial bus connection( USB ) i.e the data will not be transmitted in this Serial bus.
- The data transfer happens in an ASYNCHRONOUS manner in these type of hardware devices specifically telemtry.
- So we should have a drivers which converts the Serical bus data transmission to ASYNCHRONOUS data transmission and those drivers are callled USB TO UART BRIDGE CONTROLLER DRIVERS
UART : UNIVERSAL ASYNCHRONOUS RECIEVER & TRANSMITTER
- Specifically 6.7.6 version of drivers are required as the latest versions of microsoft drivers are not supporting the UART devices.