Velleman K8055 USB I/O Board Extension plugin

[307SW_NLD]

@mugurg

Please redownload the 2.0.1 version of the plugin. The sliders are now included.

The fact your screenshot is showing labels is proof enough that it now works. Thanks!

How can I help you with the calculation of the steering wheel buttons. Do you have the resistor values of each button?

[mugurg]

Sorry to say but with the new 2.0.1 archive nothing works anymore. No matter what i press, a female voice start to talk and that is all..

Later edit:
Fixed. Me stupid...
In the last archive the X,RRK8055 comand is not in the skin. I think i will have it in the menu.skin from now on...
BTW, the sliders works perfect. Tkank you.

Can i make a list with the resistor values i have on the controller?

[307SW_NLD]

I think you will have to use a multimeter or Ohmmeter to get the resistor values from the buttons of your car. Or you could attach it to the board and read the values on the analogin (use the test skin). Be sure that the voltage of the analogin does not exceed 5 volts. Start with a high resistor value as Rv (see schematics a couple of posts back) . Make a note of the highest value you get when pressing the buttons and change Rv until it is that button with value has a reading closest to 255.

btw what car do you have and might it be possible to find the values on the internet? Or ask the dealer nicely? If you have the values I can feed them into my excel sheet.

Hope this helps.

[mugurg]

The steerwheel controller it's a SONY RM-X2S not a OEM car one.
Here it comes, measured on the connector (a regular "stereo" 3,5mm jack) when the buttons pressed:

OFF = 0.00 Ko
SOURCE = 2.2 Ko
MUTE = 4.4 Ko
LIST = 6.5 Ko
SEEK UP = 8.8 Ko
SEEK DOWN = 12.1 Ko
VOL UP = 16.8 Ko
VOL DOWN = 23.6Ko
SEL = 33.5 Ko
MODE = 48.4 Ko

Shift (shortcircuit) this button i cannot find it...
looking inside there, is only one button that is totally different from the others, being an actual switch (like the digital inputs on the k8055 board) the rest of the buttons are on the pcb actually.

The original schematics for this controller it's here:



Also, i will use an external voltage source(LM7805) so the +5V stabilized should not be a problem.
But, is not possible to use the k8055 board voltage? I thought there is a +5V...

[307SW_NLD]

Ok, this is the output of the excel sheet.

CALCULATE ANALOGIN VALUE

Vin 5
R2 10000
Variance 7

R1 Vout Analog Low High Overlap
Rv 0 0 5.00 255 248 262
R1_2 2200 2200 4.10 209 202 216 No
R1_3 2200 4400 3.47 177 170 184 No
R1_4 2200 6600 3.01 154 147 161 No
R1_5 2200 8800 2.66 136 129 143 No
R1_6 3300 12100 2.26 115 108 122 No
R1_7 4700 16800 1.87 95 88 102 No
R1_8 6800 23600 1.49 76 69 83 No
R1_9 10000 33600 1.15 58 51 65 No
R1_10 14800 48400 0.86 44 37 51 No

R2 needs to be placed between analog in and ground and is 10KOhm.

The menu part of the RRK8055.ini would then look like this:

[MENU]
; Settings for digital inputs NORMAL, LONG, SWITCH, MULTIPLEX, MULTIPLEX_LONG, NONE
BIT0=NORMAL
BIT1=NORMAL
BIT2=NORMAL
BIT3=NORMAL
BIT4=NORMAL
; Road Runner Screen: 1 = Default others are <name>.skin
Menu1=DEFAULT
;Menu2=MENU.SKIN
; Settings for analog input 0=not active 1=active
ANALOG1=1
ANALOG2=0

[DEFAULT]
AnalogButton1=EXIT
AnalogButton1Long=
AnalogButton2=AUDIO
AnalogButton2Long=
AnalogButton2=MUTE
AnalogButton2Long=MUTE
AnalogButton2=LIST
AnalogButton2Long=
AnalogButton2=SEEK+
AnalogButton2Long=
AnalogButton2=SEEK-
AnalogButton2Long=
AnalogButton2=VOL+
AnalogButton2Long=
AnalogButton2=VOL-
AnalogButton2Long=
AnalogButton2=SELECT
AnalogButton2Long=
AnalogButton2=MODE
AnalogButton2Long=

[MENU_ANALOG]
AnalogButton1=255
AnalogButton2=209
AnalogButton3=177
AnalogButton4=154
AnalogButton5=136
AnalogButton6=115
AnalogButton7=95
AnalogButton8=76
AnalogButton9=58
AnalogButton10=44
AnalogButtonVariance=7

Off course the commands in the configuration is something you decide yourself.

About the use of the 5 volt off the board itself. The 5 volt on the board is supplied through the USB port and is limited by the USB specification. If you draw too much current from the port the board would stop working. It would be safer the supply your own voltage. But the extra power drawn for the steering control is minimal so I think it should work.

Success!

[mugurg]

Many thanks. I will try this
I suppose i dont have to use a Rv anymore, right?
Just a 10Ko resistor for the R2...

[307SW_NLD]

Yep, because you are using regulated 5 volt as the input no need for Rv

[mugurg]

[gaslan]

Quote: Originally Posted by 307SW_NLD

Yep, because you are using regulated 5 volt as the input no need for Rv

Can I ask a noob question? How exactly do you get the 5v from the K8055??

I have to admit that I have no clue on electronics...

[mugurg]

Actually i think the 5V it comes out of the usb...
that is why the current is limited to the usb specs.

[gaslan]

Quote: Originally Posted by mugurg

Actually i think the 5V it comes out of the usb...
that is why the current is limited to the usb specs.

So 5v from the positive of the usb, to A1 ? Sorry about that, but as I said I haven't got a clue on electronics, only how to solder things :-)

[mugurg]

you dont need to get the 5V from the usb to A1. it is already done by using "internal voltage" jumpers SK2-SK3

[mugurg]

@307SW_NLD

Everything works perfect, i have managed to set all the buttons for my Sony RX controller in the RRK8055.INI.
What i will like to ask you is how i can make that k8055 to be initalized once the RR start (now works only in relays.skin) , and the controlls of the Sony RX to work in main menu, audio player, and video player as well? basicaly, how can i make that this analog menu allways to work , without interfeering of course with the RR buttons and functions. These should allways work by touchscreen.

many thanks for your help.

[307SW_NLD]

Have the X,RRK8055 in your first screen (probably menu.skin). This screen will load and initialize the plugin. Use the k8055_menu indicator in every screen you want to control with your sony controls. This indicator does not have to be on a visible place.

[mugurg]

Simply perfect!
You did a great job! All buttons working perfect now.