Very close to buying one of these little Fella's

[rossoe]

Hi all,

I am absolutely amazed at the way things have moved on with Biped robots !!! and I love this ROBONOVA - so much so I'm figuring out if I can afford one this month

I used to play around with www.solarbotics.com kits when i was a kid, and have been waiting patiently for technology to progress enough so that these things were viable cost wise.

couple of questions I have -

The regulator mod to bring it down to 3v - is this pretty easy to do ? I'm a little rusty with a soldering iron.

The bluetooth (BlueSMiRF) that everyone is talking about - which module do you use ?
I found this one on the www.sparkfun.com site :


What is the difference with the GWS PG-03 Gyro and the one on the german site (PK3) ? is it just a resolution thing?

And lastly what Accelerometers are people using ? have people got theirs from the sparkfun site if so which one?

I'm in London so at the moment I'm trying to find places over here I can get hold of these components - I've had a good search on ebay and can source the PG-03 GYRO and Futaba RX pretty easily.

I can't wait to get hold of ROBONOVA

Keep up the good work folks

Ross

[Morbeious]

Buy, Buy, Buy, you wont regret it.. the Sparkfun sells a v5 BT module no need to step it down, they also sell Accelerometers which run at v5 also. the following thread below has the diagram's and part numbers.

http://robosavvy.com/modules.php?name=Forums&file=viewtopic&t=220

Have Fun

[yag-freak]

The GWS PG-03, the Multiplex Piezo Gyro PK 3, the Simprop SPG-05, the Micro Piezo Gyro from Acroname, etc. are all just the same.
It's one of the most common mini-gyros out there.

For the Bluetooth-SMIRF-Module look in the Bluetooth-thread down below in this category.

Steffen

[bauermech]

The BlueSmirf I purchased from Sparkfun was the "basic" (the one you have pictured) As Morbeious pointed out, it falls within the operating voltage range for the Robonova, and it works great!

[rossoe]

cool, i might add that to my list of things to get with it then.

What is the best combination of :

Accelerometers
Gyro
Tilt switch

Is it necessary to have all of these when your after great forward & sideways balance along with knowing when he's on his back or front ?

[gsferrari]

tilt sensor to tell which side he is leaning/falling
gyro - to prevent falling
accellero - to sense motion as a vector - great for enhancing the mobility


I would use accellerometer on the extremities (hands and legs)

two single axis gyros or a single dual axis gyro.

1 tilt sensor

Start with the tilt sensor, add the gyro and then study how the accellero can be used for best results.

[rossoe]

Thanks for the tips guys,

out of interest which version of the ADXL32x Series Accelerometers are you buying -
ADXL320 (+/- 5g)
ADXL321 (+/- 18g)
ADXL322 (+/-2g)

I wonder when Hitec are coming out with some official sensors ??