The cannot ID image file is usually a corrupt last packet or the radios were not synced before the program was used. When the two RFD radios are turned on wait until they have a solid green LED indicating they are connected to each other, then wait for at least 20 seconds to make sure they stay solid green, if any one of them flash even once the radios will not stayed paired long enough to send one picture. If they do flash power cycle a radio by unplugging and re plugging it in until the green LED stays solid. Once they stay solid for an initial period of time they will stay synced, even if you power cycle the ground station side radio for any reason. Once they are solid for a period of time then start the ground station program. Do not know why this is, started happening with the new RFD900+ radios and never did it with the 900a radios but the 900a is discontinued, trying to get help from RFD about the flashing no sync LED.
When trying to connect with putty are you using windows 8.1 or newer? If so there is some initial set up if you are using a different computer than the ones supplied at the July workshop. If it is the ground station computer provided at the July make sure it is set to a static IP, and make sure it can see the wifi network broadcast by the pi. If the computer does see the wifi network broadcast by the pi make sure the computer is on a static ip, if it is on static IP and you can see the wifi network make sure the blue light on the wifi dongle is flahsing about 1 hz, if not flashing unplug and re plug the wifi dongle.
If it is a different computer and it is running Win 8.1 or newer check to see if you can see the wifi network being broadcast by the pi, good chance it will not, if not there are instructions in the documentation from July that explains how to set up an ad-hoc network with newer versions of windows. If the computer has an intel ac-8260 wifi card you will have to change network drivers(if it is the intel ac-8260 let me know I can help, had to do this on my person pc) then follow the instructions for setting up an ad-hoc. If the computer does see the wifi network broadcast by the pi make sure the computer is on a static ip, if it is on static IP and you can see the wifi network make sure the blue light on the wifi dongle is flahsing about 1 hz, if not flashing unplug and re plug the wifi dongle.
See thread in Raspberry pi section about possible firewall rules too.
Last Edit: Oct 3, 2016 9:01:13 GMT -7 by David MSGC