Lynxmotion Wireless Controller and BS2P

Brianmcm

I'm trying to connect the Lynxmotion Wireless PS2 Controller to a BS2P and wondered where I might find a schematic to assist. I checked the tutorial on the Lynxmotion website and·have the diagram for it, however I also have the diagram from the Nuts and Volts article by Jon Williams.· I realized the John Williams article referred to the wired controller. Also Pete Miles wrote a column about this controller in Servo, unfortunately the schematic he referenced was actually a signal trace from the oscilliscope.
Is the Lynxmotion diagram correct? The reason I ask is that the John Williams article identifies some resistors and a transistor needed where as the Lynxmotion shows connecting straight to the board.
This may be a repeated topic and I apologize if it is.

Thank you for your help.
Brian.

Tom C

Brianmcm,

If you look at the Mini-ABB schematic, you will notice that the PS2 controller plugs into two different places on the board depending on whether a Stamp or a Basic Atom is being used.

The Stamp requires an inverter on the clock line and that is what the transistor is used for.

I have successfully used the Lynxmotion PS2 wireless controller with the Mini-ABB and an Atom 28 to control a Lynxmotion 4WD1 Rover.

I do not see why·a Stamp could not successfully do the same thing as long as you use the correct PBasic program developed by John Williams.

I would investigate using the Mini-ABB as trying to duplicate the wiring by hand will probably cost more in the long run than purchasing the Mini-ABB which is really quite reasonable for what you get.

I am presently investingating using either a Stamp or a Basic Atom to decode the PS2 controller, normalize the joysticks, and retransmit the signal using a Parallax 912 MHz transreceiver to communicate with another Parallax 912 MHz transreciever on a Lynxmotion 4WD1 Rover. I am presently using a Stamp and joysticks from a VEX transmitter along with a Parallax 912 MHz transreciver to do the same thing. The PS2 would be more elegant than my homebrew joystick setup.

Regards,

TCIII

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
If you are going to send·a Robot·to save the world, you·better make sure it likes it the way it is!

Brianmcm

Tom,
Thanks for the suggestion, the Mini-ABB board looks powerful; I think another one has been sold, ha, ha.

One question, when you say to use the correct program are you referring to the listing in Nuts and Volts magazine or the listing shown in Servo; it was this article that pointed me to the Lynxmotion controller.

Thanks again for you help.

Brian

Tom C

Brianmcm,

John Williams created several BASIC programs for the PS2 conversion.

Because of the way that the Basic Stamp generates the sync clock, the Basic program for the BS2 is different than that for the Basic Atom28.

I am presently on a business trip and do not have access to my home computer which has all of my robotics programs.

Try a Google search on Mr. Roboto which should bring up John Williams' special BS2 code for the PS2.

Hope this helps.

Regards,

TCIII

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
If you are going to send·a Robot·to save the world, you·better make sure it likes it the way it is!

Zoot

Jon also wrote an article on using an SX as "helper" for reading PS2 controllers. The problem with any flavor Stamp is that they are not quite fast enough to read both X and Y axis on the second joystick -- if you can live with that limitation it can be done a Stamp. But at < $3 dedicating an SX to the chore ain't bad.

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
When the going gets weird, the weird turn pro. -- HST