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All Posts (DogP)




#1
Re: Link Cable kit
Posted on: 2017/10/11 8:45
PVB Elite
Joined 2003/7/25
USA
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PVBCC 1stCoderContributor#3 PosterHOTY09 EntryLong Time User (15 Years) App CoderPVBCC 2010 EntryPVBCC 2013 Entry
That looks like (an old version of) Hedgetrimmer's link plug model (that he and I collaborated on). Is he okay with you selling them? It'd be nice to at least give him credit for the design.

We switched to a 3 piece design (with a solid nose and two rear shells) since the 2 piece version had a tendency to pop apart from the outward pressure at the nose, so gluing the halves together would probably be a good idea.

DogP
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#2
Re: We need a VB music tracker!
Posted on: 2017/10/6 7:19
PVB Elite
Joined 2003/7/25
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PVBCC 1stCoderContributor#3 PosterHOTY09 EntryLong Time User (15 Years) App CoderPVBCC 2010 EntryPVBCC 2013 Entry
I'm really bad at making music, but I was at a VG convention a few years ago and met up with Brendan Becker (chiptune musician known as Inverse Phase) who was giving a talk on composing VG music, trackers, etc. Anyway, we had met previously when I loaned some arcade games to MAGFest (which he was running at the time), so as we were talking, I brought up composing VB music, making a tracker for VB, etc.

His suggestion was to use MilkyTracker. I'm going from several year old memory here, but he mentioned that you could create a customized set of VB instruments, so at a high level, you could create music that would be 1:1 with the VB's capabilities. He offered to help me set it up, and even sounded excited about composing music for the VB (asked if I wanted some new music for my Mario Kart game <- I said it needed it very badly ;) ).

Anyway, somewhere it fell apart... I think I was supposed to send him details and audio samples of the VB's audio capabilities, and maybe I did, or maybe I dropped the ball. But after the conversation and a couple emails back and forth, it never went anywhere.

But, if anyone's serious about a VB music tracker, you may want to look into MilkyTracker, and if you'd like assistance from someone with a lot of experience in the field, I'd be glad to try reaching out to Brendan again and see if there's anything he can help us out with.

DogP
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#3
Re: Run Virtual Boy off of rechargeable 18650
Posted on: 2017/10/5 10:37
PVB Elite
Joined 2003/7/25
USA
1507 Posts
PVBCC 1stCoderContributor#3 PosterHOTY09 EntryLong Time User (15 Years) App CoderPVBCC 2010 EntryPVBCC 2013 Entry
Yeah, the VB will easily run off two 18650s. It has a buck regulator with the input specified from 6V-13V. A long time ago I gutted a battery pack and put in a 2S LiPo battery, and it worked fine.

The biggest problem IMO (as RP brought up) is related to the protection circuitry. The VB will run down to about 5V on the input, but if you run the batteries down to 2.5V per cell, they'll be ruined.

You can do a hard cutoff at 3.0V per cell to protect them, but the low battery warning on the VB doesn't show up until just below 6V. So, with the protection circuit, you'll get no warning that your batteries are low and that the VB is about to turn off. You can power the +5V rail directly with your own regulator, but again, that doesn't provide a low battery warning.

IMO, the best solution would be to redesign the controller circuitry to roll in the battery, charger, protection, status, etc. But it's probably not worth it, since the VB isn't exactly "portable"... I personally almost always run it plugged into the wall.

DogP
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#4
Re: VB Controller USB adapter?
Posted on: 2017/9/2 8:15
PVB Elite
Joined 2003/7/25
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PVBCC 1stCoderContributor#3 PosterHOTY09 EntryLong Time User (15 Years) App CoderPVBCC 2010 EntryPVBCC 2013 Entry
I made a USB VB controller using one of the retroUSB kits: http://www.retrousb.com/product_info.php?cPath=21&products_id=44 . This was a long time ago when VB controllers were cheap though, so I simply ripped the cable out, put that board inside the case, and hard-wired a USB cable.

If mellott124 (or anyone) was to make a mating connector, that'd obviously be ideal, so you wouldn't need to kill a functioning VB controller to make a USB one.

DogP
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#5
Re: USB Link cable
Posted on: 2017/9/2 8:05
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Joined 2003/7/25
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PVBCC 1stCoderContributor#3 PosterHOTY09 EntryLong Time User (15 Years) App CoderPVBCC 2010 EntryPVBCC 2013 Entry
Looks really great... I hope you're able to get these things into people's hands. As it sounds like you've found out in the other thread, creating a "run" of them to sell gets very tedious and time consuming vs. just putting a few together for yourself.

I see you're using an Atmel... not that there's anything wrong with them, but if you're not tied to that MCU, a PIC MCU may simplify the hardware a bit. For example, here's the USB MCU board I made: http://www.planetvb.com/modules/newbb ... t_id=34533#forumpost34533 , using a PIC16F1455. It runs directly from 5V, has hardware USB, has an internal oscillator that's good enough for USB, etc. Basically your BOM consists of the MCU and a few caps/resistors. It all easily fit on a single side of the board.

DogP
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#6
Re: Link Cable project interest
Posted on: 2017/9/2 7:47
PVB Elite
Joined 2003/7/25
USA
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PVBCC 1stCoderContributor#3 PosterHOTY09 EntryLong Time User (15 Years) App CoderPVBCC 2010 EntryPVBCC 2013 Entry
Great job on the connectors! I'm really glad someone was able to step up and make this happen. Unfortunately I've been out of the "scene" for a while... I've got lots of projects I would love to finish, but free time is one of those things that just doesn't seem to come as easily anymore. :/

DogP
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#7
Re: Mario
Posted on: 2017/9/2 7:42
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Joined 2003/7/25
USA
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PVBCC 1stCoderContributor#3 PosterHOTY09 EntryLong Time User (15 Years) App CoderPVBCC 2010 EntryPVBCC 2013 Entry
I was talking to a friend of mine and he mentioned this hack came out... just wanted to drop in and say GREAT JOB!

DogP
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#8
Re: Side of eye display matter?
Posted on: 2016/8/11 18:10
PVB Elite
Joined 2003/7/25
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PVBCC 1stCoderContributor#3 PosterHOTY09 EntryLong Time User (15 Years) App CoderPVBCC 2010 EntryPVBCC 2013 Entry
The left and right displays are identical and interchangeable... as are US and JP displays.

DogP
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#9
Re: Link Cable project interest
Posted on: 2016/3/6 19:24
PVB Elite
Joined 2003/7/25
USA
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PVBCC 1stCoderContributor#3 PosterHOTY09 EntryLong Time User (15 Years) App CoderPVBCC 2010 EntryPVBCC 2013 Entry
Ah... yeah. It's plenty small and simple already.

Here's a pic of it as it sits on my bench (I was working on it last week... got sidetracked this week). I still need to get the bootloader going too, so anyone can upgrade to newer and better firmware in the future... but that should be very straightforward.

DogP

Attach file:



jpg  vb_usb_link.jpg (89.62 KB)
10_56dc75d3346f7.jpg 314X591 px
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#10
Re: Link Cable project interest
Posted on: 2016/3/5 9:09
PVB Elite
Joined 2003/7/25
USA
1507 Posts
PVBCC 1stCoderContributor#3 PosterHOTY09 EntryLong Time User (15 Years) App CoderPVBCC 2010 EntryPVBCC 2013 Entry
I don't think that chip will work... it does I2C and UART, but not SPI (AFAICT).

I've already got the basic mode of transfer working... I'm working out the specific details for data direction, flow control, etc. I really want to do everything out of band, but sharing a single open collector pin makes things a bit more difficult, so I'm trying a few different ways to see what's the least complex, most robust, etc.

DogP
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