RoboSavvy Forum

Wifi for ROBONOVA

2006-06-20T08:34:24+01:00

The Wiport draws 460mA peak at 3.3V which is about 1/4 the power a stock RN normally uses while standing around. I suspect other Wifi boards would be similar. That's fairly significant compared to Bluetooth but does support much higher data rates so may be worth it if you have a high bandwidth requirement like video etc.
The RN is underpowered with the NiMH batt and you need to upgrade the power supply to make add-ons like Wifi viable. I like Matt's idea of putting the batteries on the bottom of the feet. Allmost everything you do makes the COG move upward and makes the robot more unstable than it already is. Falling over is a definite negative especially if you are showing off the robot and stability seems like a priority to me.

Statistics: Posted by subpilot — Tue Jun 20, 2006 8:34 am

Wifi for ROBONOVA

2006-06-20T07:37:15+01:00

I'm more concearned about battery usage. Wifi kills my laptop battery in no time so a RN1 battery will last... 10 minutes?

Statistics: Posted by Gil — Tue Jun 20, 2006 7:37 am

Wifi for ROBONOVA

2006-06-19T19:26:11+01:00

That would be quite a feat to pull off. The card uses an SPI interface which has 2 data lines, a clock and a chip select. In order to talk to it you would have to bit-bang the I/O lines using RoboBasic. I don't know the specific timing requirements for that board but meeting them using RB would probably be nearly, if not totally, impossible. Along with that you would need to emulate the network interface driver.
Now if you could run C on the RN controller it would be a different story as there is tons of info on doing it using the ARM processors.
Here's a module from Lantronixs that would be much easier to deal with. http://store.wibots.com/wp.html

Statistics: Posted by subpilot — Mon Jun 19, 2006 7:26 pm

Wifi for ROBONOVA

2006-06-19T18:59:40+01:00

HI, I have decided to post this separately. I have a SANDISK SDIO card WIFI, will it be possible to connect it to the ROBONOVA the same as the bluettoth? Or are there other WIFI card possible to connect to ROBONOVA. Thanks....

http://www.davespda.com/reviews/other/sdsdiowifi.htm

Statistics: Posted by Chrisbie — Mon Jun 19, 2006 6:59 pm