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Forum Index : Microcontroller and PC projects : Mouse House

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elk1984

Senior Member

Joined: 11/07/2020
Location: United Kingdom
Posts: 228
Posted: 02:57pm 17 Oct 2020
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I was getting a bit nervous about having a bare HobbyTronics board hanging off the top of my Maximite, so I've finally got round to making a case:





The ribbon cable and the wires into the board are both grommeted so a mouse can be plugged and unplugged without fear of pulling on the cables.

If anyone would like the plans to build, I can create a set with an ordering list for Bricklink.
 
bigmik

Guru

Joined: 20/06/2011
Location: Australia
Posts: 2950
Posted: 12:43am 18 Oct 2020
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Hi Elk,

I love the LEGO look to your design.

I may be preempting things a bit but I have two designs in the pipe that may (or may not) be of interest to people

Both are based on dual HOBBYTRONICS USB devices.

The first is to be an internal design that has one external facing USB port for joysticks (Or any other device that the HT chips can support) and a second port for an INTERNAL port designed for a mouse with a wireless transceiver so that it can be fully contained inside the case. This ones requires the purchase of 1 or 2 HT chips not the assembled boards.

This is the internal design, I have it completely designed but I am still waiting for my chips from HT to arrive so I can test the hardware before I send them off to be made.





The above board has 3 female header pins (facing down) that can mate (with a bit of luck as they are tight with the waveshare PCB) with the DS18B20 header on the WAVESHARE versions of the CMM2 board.. This will then have the DS18B20 mounted on the extra pads on my PCB,, it will also pick up 3v3 and GND from this header so no need to run these wires. There are headers to pick up power (both 5V and 3v3) and GND as well as two that will need to go to the I2C pins that will need to be soldered to suitable spots on the CMM2.

Then I have this one part designed that will plug into the rear of the CMM2 and have a pass-through port so you wont lose any functionality.



This design is not yet finished and I hope to cater for EITHER 1 or 2 HT full PCBS so the user can just plug them in and go or I hope to be able to add the HT chips and support circuitry on board (under the images of the HT boards) so they can just buy the chips and solder them on (with a few other cheapish components)

Anyway, As I said I need to get my chips first to test the designs before any release is done.

Any comments (Good or Bad) will be welcome

Kind Regards

Mick
Edited 2020-10-18 10:51 by bigmik
Mick's uMite Stuff can be found >>> HERE (Kindly hosted by Dontronics) <<<
 
vegipete

Guru

Joined: 29/01/2013
Location: Canada
Posts: 1132
Posted: 01:10am 18 Oct 2020
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Your plug-in one will likely foul the VGA plug on one side and the other cables on the other side.

Instead, perhaps mount the two HT boards upside down underneath (you know, Australian style) the board with the USB jacks facing away from the CMM2. Only one of the mounting holes beside the jacks will hit clear pcb but that should be OK.
Visit Vegipete's *Mite Library for cool programs.
 
bigmik

Guru

Joined: 20/06/2011
Location: Australia
Posts: 2950
Posted: 01:36am 18 Oct 2020
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Hi Pete,

Yes you have a very good point there.

I have only got that one as a concept at this stage (luckily, I have spent my time on my preference (the fully internal board) There are several possibilities I opt for..

The VGA goes VERY close to the edge of the 40 way header so the PCB cannot protrude past as far as I have shown.. Back to the drawing board..

I have to build 20 off '170 mm boards for a customer first so that will be delayed a few days.

I am thinking rear facing it will have to be (or a very long PCB) I possibly could swing the FEMALE header underneath so the PCB raises enough to allow clearance but that probably wont be sufficient to clear the onboard USB connector..

Some think music whilst I build my '170s up.


@ ELK,

Sorry to hijack your wonderful post I will carry this on in my own thread if there is anything else to be said.

Kind Regards

Mick
Mick's uMite Stuff can be found >>> HERE (Kindly hosted by Dontronics) <<<
 
CircuitGizmos

Guru

Joined: 08/09/2011
Location: United States
Posts: 1427
Posted: 04:26pm 18 Oct 2020
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You would be using the USB keyboard port for the keyboard and then adding a USB mouse via a wireless connection?

If you purchase a wireless keyboard/mouse combination it comes with ONE wireless USB receiver. Plug that into the USB port that is there and you could have a USB keyboard and mouse with the current hardware. No adding additional hardware. This is because the wireless USB keyboard/mouse is ONE USB device - no hub.

Everyone with a CMM2 (Or RetroMax) could have a keyboard AND mouse without any additional hardware. The USB part of the ST microcontroller is able to do this with the USB firmware changed a little bit.
Micromites and Maximites! - Beginning Maximite
 
matherp
Guru

Joined: 11/12/2012
Location: United Kingdom
Posts: 10310
Posted: 04:31pm 18 Oct 2020
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  Quote  The USB part of the ST microcontroller is able to do this with the USB firmware changed a little bit.


So make the change and send it to me fully tested if it is that simple and I'll incorporate it - I don't know how to do it and many on the ST forum have tried and failed.

I'm bored of people who know better but don't do the work and expect me to bow to their superior knowledge
 
CircuitGizmos

Guru

Joined: 08/09/2011
Location: United States
Posts: 1427
Posted: 04:33pm 18 Oct 2020
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You have always been nothing but rude to me, Peter.

You've rudely turned down many of my suggestions.

I've always been willing to work with you on CMM2 things, but your attitude toward me makes that difficult.
Edited 2020-10-19 02:35 by CircuitGizmos
Micromites and Maximites! - Beginning Maximite
 
matherp
Guru

Joined: 11/12/2012
Location: United Kingdom
Posts: 10310
Posted: 04:35pm 18 Oct 2020
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We had this discussion offline and I said no then for good reasons so you then raise it online - are you surprised?
 
CircuitGizmos

Guru

Joined: 08/09/2011
Location: United States
Posts: 1427
Posted: 04:38pm 18 Oct 2020
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You immediately said no. You didn't even ask about any details, you just shut down the discussion.
Micromites and Maximites! - Beginning Maximite
 
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