I am newbie on fez Panda and .net framework. I’ve stuck here for weeks and desperate for help.
I’m working on a school project and I have the board from my seniors. The board controls a few servo motors through serial communication. The servo motors are supplied with 9V using an external power.
The board initially worked well. I modified the code with a few parameters and deployed to the board. The servo could not be started.
I deployed the original code, it failed to start the servo.
The pins to the servos are soldered on another board, which is plugged to fez panda. The output voltage to the servo is 9V. And I did a quick check on my senior’s soldering, it should be ok.
Now deals with the fez panda.
I inserted a piece of code to blink a led on one of the I/Os and run the program. The led blinked, indicating the program is running inside.
But I’m not sure if the serial port is working, thus the servo fail to receive commands. How can I check?
Another possibility is the code. I just copied the entire project to another location and had modification there. There might be some references not included properly or ?
So I created a new project, copy and paste the original code one method by one, and include the references.
- But before testing this, I came across new problem.
My win7 64 bit laptop cannot recognize the board.
The device manager either not refreshing to show anything, pop up message of “cannot recognize”, or “NETMF debug interface” with a warning sign.
the led sometimes lights up for a while, sometimes off, sometimes lights on.
MFDeploy, updater, and FEZPanel cannot connect to panda.
It gets hot after plugging in for a minute or so.
By searching on forum:
change cable, usb port, plug out other device: not work
I don’t have a powered usb hub right now.
re install the GHI package: not work
Update the firmware: how can I update the firmware when it’s not recognized by PC?
I just read a post on how win7 hibernate freeze panda if it is plugged in for long without program running. I did have it plugged in for a while and working on programming, then I found the led off and it gets really hot. If the fez panda is freeze, how can I solve it?
My friend suspect it is burnt. From your description I feel it should not be burned so easily.
On the other hand, as the servo power supply is much higher than fez panda, the large current may burn the board.
The weird response may come from my stupid mistake.
Really appreciated for your time on my long description!