Hardware Hack: Pandora RUMBLE Edition

[mcobit]

Some people seem to like that. My samsung phone vibrates and beeps every 2 minutes when the battery is low out of the box.

 

[mcobit]

Ok, so now I left it on 255 for about a minute for testing and it seems like the motor got slower...


And I made a mistake in reading wrong datasheet


It is rated at 3V not 3.7V.


I think I need a resistor after all.

 

[Asiyura]

I may try some kind of rumble hack, later.

But if I do, I would be using some circuitry (µ-controller, …) and the GPIO 170 (1 wire connection) to drive the motor.

 

[mcobit]

Be sure to tell us your results


Edit: try to use small parts only. There is little room left in the Pandora.

 

[gotwake424]

Be sure to tell us your results


Edit: try to use small parts only. There is little room left in the Pandora.

There's enough room for something pretty big, just have to know where to put it  :rolleyes:

Thats all the hint im giving for my hardware hack, you'll have to wait until I post about it 

 

[Franko]

@mcobit - I realize that it's really tight inside of there, but I was wondering if you (or someone) would be brave enough to attempt a "gyroscope/accelerometer" hack?  I think that part is fairly small and would fit.  You'd probably have to install Notaz's Android program as well...since I'm unfamiliar with any Linux-based games that would utilize that type of electronics part...

Anyway, that'd be a really interesting hack to see on our current Pandora (IMO).

Edit 1:  I'll address this post to Gotwake as well... in case you're into hardware hacking on the Pandora.  

 

[gotwake424]

@mcobit - I realize that it's really tight inside of there, but I was wondering if you (or someone) would be brave enough to attempt a "gyroscope/accelerometer" hack?  I think that part is fairly small and would fit.  You'd probably have to install Notaz's Android program as well...since I'm unfamiliar with any Linux-based games that would utilize that type of electronics part...


Anyway, that'd be a really interesting hack to see on our current Pandora (IMO).

Edit 1:  I'll address this post to Gotwake as well... in case you're into hardware hacking on the Pandora.  

I've thought about it, but I can't really find a good way to inference a gyro/accelermoter.

im just tired of carring around a mini usb-otg cable so im fixing that 

 

[Hồng Thất Công]

The rumble is nice but I'm afraid it will rumble out of my hands 

The Pandora is not cheap so make sue you tie it up before "Ready To Rumble" 

Good job mcobit!

 

[Asiyura]

Be sure to tell us your results


Edit: try to use small parts only. There is little room left in the Pandora.

Got some TSSOP MSP430, they're small and can run at voltages ranging from 1,8V to 3,6V, with really low consumption: less than 300µA at 1MHz when powered with 2,2V.

That way, my pandora would have one more RISC processor  :lol:

The great thing is that since the 170 GPIO is using HDQ protocol (1 wire, bi-directionnal, 5Kbit/s) and MSP430 is a powerful little beast with lots of GPIO (from 14 to 22 IIRC), it allows to drive quite a few devices. 

 

[Binky]

I've thought about it, but I can't really find a good way to inference a gyro/accelermoter.

There's at least one I2C bus available...

 

[gotwake424]

I've thought about it, but I can't really find a good way to inference a gyro/accelermoter.

There's at least one I2C bus available...

software, not hardware.  (that sentence was worded horribly) 

I would have no idea were to begin on the software side. 

I'm a strictly hardware person (aviation mechanic for a living) 

 

[Binky]

Couldn't the software treat it like a third joystick?

 

[gotwake424]

Couldn't the software treat it like a third joystick?

Not a clue. I have no idea about software, besides very basic concepts

But I am very good at smd/smt hand soldering so If you get the software to work, I can get the hardware to work. For at least proof-of-concept?

 

[Asiyura]

Couldn't the software treat it like a third joystick?

Probably be the best way, IMHO.

That would add 2 axis (roll/pitch) for the gyro and 3 (X,Y,Z) for the accelerometers. (If I understand how those things work)

 

[Franko]

^  Hhhmmm...maybe.  I think that I just might buy a used Pandora from someone (that might already have a brittle case or some other internal issue) so that I could tinker a bit.  I was about to try some stuff with one of my Raspberry Pis GPIO pins, then I completely put it on the back shelf when my Pandora arrived.  Been a bit preoccupied lately with my new "toy".  

 

[mcobit]

Now I have found a motor that operates completely in the specs of the kb_led pads and is a small disc, that can be placed perfectly inside the circle under the dpad when you remove the little plastic pin. Works perfectly.


I have 5 spare if somebody would like one. Photos tomorrow.


Edit: Also I wrote a little bash script that takes time and intensity as well as on/off for arguments.

 

[comradekingu]

Now for some up and down.

Press key to begin ...

Quoted for great justice.

These were quite small, would be awesome to have one in each L/R-button.

Could be useful for tutorials. Where you would otherwise have a button light up and an action on the screen, you could have different combos of L/R and keys.

Or as directional input, lets say something hits your hitbox in a game from the left, then you get only those rumbling.

Or gearing with the ramping up on a racing game.

 

[mcobit]

There is only one connection for this kind of stuff afaik

 

[iprice]

https://www.youtube.com/embed/fSbFgt0wp_4?feature=oembed