homepage Forums Technology Flight Sim Pit Builders MMJoy/MMjoy2 - Set your own USB controller with a cheap Arduino

The Wii Remote connects to PC via bluetooth. But the Nunchuck is an accessory that connects to the Wii Remote and communicates with it using I2C.



couple places make a breakout board for the connector but the Nunchuck sells for like $10 so getting one to cut the cord open is no big thing either. It's only 4 wired to deal with anyway; Voltage, Ground, SCL, and SDA.

I think it would make a nice supplemental thruster control for Elite: Dangerous for landing or whatever, or a dedicated map control. I'm pretty sure I can use an old arduino pro mini or an ATtiny chip if I can get it to talk SPI to MMjoy and I2C to nunchuck at same time.

Couple projects along this line...

• Basics
• Arduino Library
• Pan and Tilt

Hi there,

The other day, I did some experiments with MMJoy2 20150727 and a Arduino Leonardo (from Itead). After a while I was able to understand and test a 2x2 matrix using directly some 1n4148.
Today I wanted to go further and I am back some steps.
I can see the stuff from MMjoy. I can load the programmed set. I can save the programmed set. Sometimes I have a error message like that: mmjoy error write config_hid.[A device attached to the system is not functionning]
Sometimes I dont have it.
My matrix is
D4 D1
D2 D3
Button 1 2 3 4 declared as ----
After the restart if for exemple by 1N4148 is between D4 and D2 (Arduino D4 -|<|- Arduino D0), then 1 is red in MMjoy, anyway it is not red as a button input and not blanked when I unplug it.
I dont see any refresh like if it was crashing on first state at boot.


What I am doing wrong? How can I troubleshoot that?
Thanks.

Edit: reboot windows and work go figure.

loopingz
maybe mistake - "D4" "D1" "D2" "D3" are you read from arduino pcb? - this is wrong. mmjoy use native ATMEL port names, look for "Pins_Arduino[leonardo]" from "pictures" subfolder.

Hey mega_mozg_13,

Thanks for taking the time to answer.
Anyway the reboot solved my issue. I was trying previously to do revive a pro micro and I guess I kind of crashed the arduino driver.
Yes I know the correspondance between arduino pins and MMjoy/atmel pins. I took me a while on the first day. Maybe you should use these picture directly in the Mmjoy soft or being able to see both arduino and atmel in the soft.

One other thing I was thinking about is about having some analog as multiple switch with no ghosting. I understand that there is already more switch than most will need but I was thinking about something like that:

Which would be no ghosting for sure 4 switch easy more is possible but then you need to check with the adc resolution and the noise.
It might work better than the classic:

Maybe it is already there and I missed it.
Let me know your thoughts.

Hi, update "MMJOY2 [v20150928]". check, and tell me is freezeing is solved?

Hi,

MMJOY2[v20150928] : there is no freezing right now. i am using 3 internal inputs a1302 hall sensor.

Jens

Bosk,

What filter value you are using in axes for A1302 HALL?

Hi Sokol1
i use 10 bit and filter value 2.

Without a filter the values were jumping around.

i use the controller with diy pedals for car racing.

Is it possible to add more buttons in "mouse and keyboard" emulation. Now it is possible to add 15 emulated buttons. Can this be 24? Shift registers from thrustmaster sticks support up to 24.

Thank you!

no. not enough free space for saving configuration at eeprom.

Does anyone know the best way to find pin-numbers with cloned boards? I have a Pololu A-Star 32U Mini RV and so far I have figured out the MMJoy labelling for the analogue inputs. However I am trying to set up a 4x4 push button matrix and it's a little harder to do it by trial and error. Is there an easy way of testing pins without saving and restarting the device?

Here's the diagram for the board, I have had some success using the labelling of the Arduino mini as reference but not for the matrix.



Currently my matrix is hooked up as follows:

Rows are on 0,1,2,3 and columns are pins 4,5,6,7.

Any help would be greatly appreciated, I'll be trawling the thread here and looking about for more info in the mean time.

Cheers,

Cory.

Edit: Decided not to be lazy and look at the schematics myself, will dig them out now.

Edit 2: Didn't need the ATmega32U4 schematics as the pin-out schematics are accurate, I just haven't had my breakfast.

Seems like you found it out but there's a lot of info on that diagram you can just throw away. Like a story problem in math class that gives you a whole lot of info you don't need to find out when those damn trains will hit the kid playing on the tracks or whatever...

Just look at the Arduino analog and digital pin numbers and go from there.

Cory

just sample 3 axis + 3*3=9 buttons

I ask because I have problem with Honeyweel SS495A1 (3.125mVg), only with 10x filter they flotation in readings are reduced to tens numbers.

By "accident" (broken one sensor leg...) I replace then with Allegro A1302 and this became stable with only 2x filter, only reveled a little more trick to set the magnet, is need place the magnet more close to sensor possible. The result is very good.

hi everyone,
I'm new to this website have an hi electronic background and want to start some personal project for controllers for star citizen and got a couple of questions because i find this tread very interesting and that a lot of job that i want to be done is mostly covered here.

i look MMjoy2 and was asking myself how many different device work with it because i think my setup will need at least 2 or 3 device if working.

i'm thinking using xbox 360 joystick as controller and want to know if any of you have use some so i know if there a bad side to them?

i was thinking of using arduino leonardo before seen they where not any more produce by them and want to know if you think supporting the zero or the due anytime?

and the last onne do your interface accept toggle switch?

those are my question atm i just start my project atm i'm at the first phase of dev. and prefer know a bit more of past experience before starting to buy my gear.


already done micro controller programming and pcb conception so i know where i'm going but don't know you coding and windows interfacing so could be nice to have some light on it.

Thanks
Coluck

mmjoy accept to setup any VID/PID, so you can connect different devices as you wish.
(0000 0000 / FFFF FFFF - 4294967295)


accept, and more - all of buttons can be as toggle switch.

other questions do not relate to MMjoy2...

HI,

is there a way to connect the hx711 loadcell amp modul ? https://github.com/sparkfun/HX711-Load-Cell-Amplifier

loadcells are often used for pedals eg brake

thanks

bosk

New version tested for last couple of days - no freezing axis found. Thank you again, mega_mozg_13. Best regards !

If you send to me samples, I try to add support...

Hello!

Has someone got this working as wireless HID game controller?