#4024755 - 10/20/14 08:51 AM
Re: MMJoy - Build your own USB controller
[Re: Sokol1]
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tirta
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hi mega_mozg, thanks for the explanation. sorry I do not understand what you mean by "you eat my brain". set "USB Poll" to "1" = 1000 Hz 2=500 4=250 and 8=125 (OS Windows limit for old mjoy8 / mjoy16). so if i use 8 axis with 42 buttons, do I get faster response using mmjoy2 compared to the old mjoy16?
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#4024760 - 10/20/14 09:07 AM
Re: MMJoy - Build your own USB controller
[Re: Sokol1]
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tirta
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thanks mega_mozg, the reason I ask for the sparkfun pro micro is the one I get from ebay: http://www.ebay.com/itm/New-Pro-Micro-AT...i-/140972980117does not have "sparkfun" in it. so since I know almost nothing about electronics, I wonder if it is the same product or not. I have googled this, and find out that sparkfun is a brand name. And the one from ebay is a chinese clone. so I guess it is the same, but I am not very sure about it.
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#4024762 - 10/20/14 09:23 AM
Re: MMJoy - Build your own USB controller
[Re: mega_mozg_13]
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triggahappy
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Hello.
@Mega mozg
I know its possible to use pro micros 5v to power up mcp 3208 however in your original pro micro and extension board you have used external 12v power supply converted to 5v to power up both mcp 3208.
My knowledge of electronics is limited and i can only guess why did you do that way. Am i correct guessing that the only reason to use external power supply (stable 5v) to mcp3208 is to get highest sampling rate from the chip.
Thanks
@tirta
i am using 'ebay' pro micro and it works just fine, just make sure its pro micro and not any 'other'micro
Last edited by triggahappy; 10/20/14 09:26 AM.
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#4024898 - 10/20/14 05:02 PM
Re: MMJoy - Build your own USB controller
[Re: tirta]
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Sokol1
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is there any difference between sparkfun pro micro and arduino pro micro?
thanks mega_mozg, the reason I ask for the sparkfun pro micro is the one I get from ebay: http://www.ebay.com/itm/New-Pro-Micro-AT...i-/140972980117does not have "sparkfun" in it. so since I know almost nothing about electronics, I wonder if it is the same product or not. I have googled this, and find out that sparkfun is a brand name. And the one from ebay is a chinese clone. so I guess it is the same, but I am not very sure about it. Tirta, This one you buy in Ebay is Chinese no brand clone of PRO-Micro (Sparkfun is only manufacturer) - work in the same way (if work... like all cheap China goods ). Is advisable buy the in pairs... just in case. Sokol1
Last edited by Sokol1; 10/20/14 05:35 PM.
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#4025123 - 10/21/14 04:42 AM
Re: MMJoy - Build your own USB controller
[Re: Sokol1]
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tirta
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hi triggahappy & sokol1, thanks for clarifying about pro micro. now I am going to order it
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#4025127 - 10/21/14 05:27 AM
Re: MMJoy - Build your own USB controller
[Re: triggahappy]
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mega_mozg_13
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Am i correct guessing that the only reason to use external power supply (stable 5v) to mcp3208 is to get highest sampling rate from the chip.
Yes it is for stable 5v.
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#4025158 - 10/21/14 09:43 AM
Re: MMJoy - Build your own USB controller
[Re: Sokol1]
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tirta
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Hi mega_mozg, after studying and looking at your pictures and explanations, then comparing the prices at ebay: http://www.ebay.com/itm/Leonardo-R3-Pro-...=item2ececa28e3it seems that using arduino leonardo is better for only 6 axis & 42 buttons. it has total 23 pins, 11 internal axis. if I use only 6 axis, there are 17 pins left for button matrix. so 17 is more than enough, for 42 buttons I only need 13 pins. 13 = 6+7 6 colums x 7 rows = 42 buttons. so there is no need to add mcp3208. is this correct?
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#4025216 - 10/21/14 01:32 PM
Re: MMJoy - Build your own USB controller
[Re: Sokol1]
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triggahappy
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@tirta That's the thing.... i don't know:P It's only my assumption that with higher resolution you should get more precise response. And i expect to see results while playing game. I am rebuilding Logitech extreme 3d pro with hall sensors and belkin n52te as a throttle control with additional second pov and 2 additional axis. i need around 40 buttons and 6 axis. one way or another i need mcp3208. I was hoping mega_mozg would shed some light on how 12bit compares to 10bit. Since we are on the subject it would be good to know if there is significant difference in mcp3208 performance while using 4.5v instead of full 5v Cheers
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#4025292 - 10/21/14 06:57 PM
Re: MMJoy - Build your own USB controller
[Re: Sokol1]
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Sokol1
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Other (theoretical) advantage is that communication between MCP3208 and the controller board is in Digital mode (binary code) instead Analog (voltage variation), what means axis less subject to external interferences (electrical/magnetic noise). https://code.google.com/p/mmjoy/wiki/ExtenralADCSokol1
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#4026636 - 10/24/14 03:01 PM
Re: MMJoy - Build your own USB controller
[Re: Sokol1]
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tirta
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Hi Sokol1,
Thanks for the link.
it seems what those guys say is mostly true, so there is no need to use 12bit or adding mcp3208 for my purpose.
Last edited by tirta; 10/24/14 03:03 PM.
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CD WOFF
by Britisheh. 03/28/24 08:05 PM
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