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Messages - Joe Henley

1
#twatch network LCD backpack / Re: #twatch linux usage
Cristian,

If your backlight works OK, that's good.  You probably have one of the later produced tWatches.

I assume it works OK and that you can ping it.

Next you should look through the reference I included last time.  Similar sites include:
http://tldp.org/LDP/abs/html/devref1.html
http://www.cyberciti.biz/tips/linux-ipt ... -6889.html

These should give you some ideas about opening a port on your PC.  Then use Ian's suggestions about passing Matrix Orbital commands to it using port 1337.

Joe
3
#twatch network LCD backpack / Re: Great, now what?
Hi all,

Sorry for the delay in responding; things got a bit hectic in my work for awhile. 

After more testing, I found the problem was with my power supplies.  One dead, the other with a negative center pin.  My bad, I assumed all wall warts were positive center pin.  So now I have a new one; 7.5 VDC, 800 mA, center positive.

With the new power supply I got my dhcp server to connect and got the MAC address from my syslog (running Linux); then was able to ping it; then ran the python script to turn on the back light.  After adjusting the back light pot, it works fine.

Next (probably after the holidays) I'll upload the new firmware (to get the back light on at start up) and then go from there.

Thanks for all the help and suggestions.

Joe Henley
4
#twatch network LCD backpack / Re: Great, now what?
Well, I'm giving up on this one.  I get no signs of life from it at all.  Even nothing from the ethernet connector LED's.  I sent a note requesting return shipping instructions to Seeed today, awaiting reply.  Anyone tried this; any suggestions?

Thanks!

Joe Henley
5
#twatch network LCD backpack / Re: Great, now what?
Hi all,

Same problem for me.  Tried two wall warts, one 6.5 VDC, 500 mA, the other 7.5 VDC, 350 mA.  I get nothing on the LCD with either. 

I tried fiddling with the small brightness pot on the board, no joy.

I'm going to try some different settings for my DHCP server, but I doubt that is what's keeping it from just "lighting up."

Joe

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