Uzebox 128+

Topics regarding the Uzebox hardware/AVCore/BaseBoard (i.e: PCB, resistors, connectors, part list, schematics, hardware issues, etc.) should go here.
User avatar
uze6666
Site Admin
Posts: 4338
Joined: Tue Aug 12, 2008 9:13 pm
Location: Montreal, Canada
Contact:

Re: Uzebox 128+

Post by uze6666 » Thu Mar 02, 2017 3:02 am

With Alec having the keyboard+mouse situation more or less handled there is no more stall here.
Prototype pcbs are in the mail from China. As soon as I get them, I'll send you some and resume the software dev for the driver.

User avatar
D3thAdd3r
Posts: 2213
Joined: Wed Apr 29, 2009 10:00 am
Location: Minneapolis, United States

Re: Uzebox 128+

Post by D3thAdd3r » Fri Mar 03, 2017 10:21 pm

Very nice, chief!

User avatar
uze6666
Site Admin
Posts: 4338
Joined: Tue Aug 12, 2008 9:13 pm
Location: Montreal, Canada
Contact:

Re: Uzebox 128+

Post by uze6666 » Wed Mar 29, 2017 4:48 am

uzebox_ps2_pcb.jpg
uzebox_ps2_pcb.jpg (117.72 KiB) Viewed 811 times
They took forever to arrive, but at last they are in. I will assemble one tomorrow and hopefully I didn't make a stupid mistake. :)

User avatar
uze6666
Site Admin
Posts: 4338
Joined: Tue Aug 12, 2008 9:13 pm
Location: Montreal, Canada
Contact:

Re: Uzebox 128+

Post by uze6666 » Thu Mar 30, 2017 3:41 am

Well, I built it and...it doesn't work. Obviously. :roll:

I use the UART port to debug so I know the code works on the atmega168 and mouse/keyboard initializes, but there's seem to be a problem with the bus to the Uzebox. Will have to get out the scope and trace what is going on. To be continued!

User avatar
D3thAdd3r
Posts: 2213
Joined: Wed Apr 29, 2009 10:00 am
Location: Minneapolis, United States

Re: Uzebox 128+

Post by D3thAdd3r » Fri Mar 31, 2017 3:10 am

You always figure these things out, no doubt on that. Is the BOM stable at this point or do you see any changes coming? I'd like to get the parts now so I am ready when your newest invention arrives :)

User avatar
uze6666
Site Admin
Posts: 4338
Joined: Tue Aug 12, 2008 9:13 pm
Location: Montreal, Canada
Contact:

Re: Uzebox 128+

Post by uze6666 » Fri Mar 31, 2017 7:44 pm

The BOM should be final. But until, I find out the root cause of the current problem, I can't say for sure I didn't miss a thing.

User avatar
D3thAdd3r
Posts: 2213
Joined: Wed Apr 29, 2009 10:00 am
Location: Minneapolis, United States

Re: Uzebox 128+

Post by D3thAdd3r » Fri Apr 28, 2017 1:19 am

I'm reasonably far along on a TQFP all surface mount PCB design, inspired by Clay Cowgill's AVCore. It will be larger than that, since the ESP8266 itself is half the size of an AVCore and I am building the headphone amp into the PCB also. All the external ports will be on a daughterboard for easier case mounting(I think this setup would be good for a portable too).

One big thing I need to figure out is the smallest/simplest way to make a Sony CXA2075 work. I have found the RGB port on the Uzebox cannot actually work, if you have the AD725 soldered in. It can probably be done with an analog switch, but then even that would require either more circuitry for detection, or manual user switching. CXA2075 will output composite, s-video, and RGB simultaneously. RGB is a critical goal for me. Apparently it has higher video quality but also draws more power.

I found and ordered these nice things:
mini-din-9-adapter.jpg
mini-din-9-adapter.jpg (11.65 KiB) Viewed 634 times
These are for 9 pin min-din connectors(apparently made for ATI Radeon X800 series graphics cards), and each unit will come with one. So there is only 1 video planned, which is the 9 pin these connect to. There would be options to make a smaller dedicated single format cable of course.

These are the power supplies I decided on, they are visually nice and should be able to run the laser engraver to put "Uzebox 128" on there. I'm ordering a couple different plugs for US,EU,AU since if I ever get these done, the people I would give demos to are scattered across the power types/world. They output 12v and handle 100-240 volts 50/60hz:
s-l500.jpg
s-l500.jpg (6.01 KiB) Viewed 631 times
That's all for now, I will hopefully get this PCB done and can show a pic. It wont work the first time of course.

Post Reply

Who is online

Users browsing this forum: No registered users and 2 guests