open hardware and boost up for new users

[Minamisava]

Hello everyone,
I was trying to get my first board with XMOS going and noticed that, first of all, I can't be the first one and second of all there are sweet projects out there!

I checked out:
- the projects here, but you have to search a lot if you want some schematics.
- XMOS git and it's listing, which also doesn't have schematics (just from cori?):
http://xcore.github.io/repo_index/index.html

Most people get really excited about good open hardware projects like the one from Cori:
http://www.xcore.com/forum/viewtopic.php?f=7&t=1224


I've already filtered 3-4 small projects with open hardware, but was wondering if there is any wiki / collection / listing for such projects. Any inputs?
I'm not complaining about the StartKIT, which I have, but I'm thinking more about building blocks at a hobbiest and maybe prototyping level.

[Bianco]

Almost all development kits come with schematics. You can find them on the XMOS website under support of the specific kit.

Good schematics from open source projects are a bit scarce but you can find a few if you go through the projects on XCore.

Here's one: http://www.xcore.com/projects/xs1-l1-ti ... -prototype :)

[Minamisava]

Thx for the reply and reference design tip!

You are right, there are enough reference designs. I am just used to have building blocks for me and was looking for some premade for xmos =)

I am thinking on starting with a small one, just to get to know the programming language and then build up.

The boards that I've found:
- Breakout board for XS1-L8 (old XS1-L1) with eagle files
http://embeddedeye.com/profiles/blogs/f ... pcb-layout

- Breakout board from Corin also with the XS1-L8 also with eagle files
https://www.xcore.com/forum/viewtopic.php?f=7&t=1224

- Extension of Corin's work with usb interface (DrNo)
https://www.youtube.com/watch?v=-Wj8vBx ... -gduf9lrpA

My favorite is this last one from DrNo. I'm going to read a bit further, he seamed to want to sell it. But the last post I have on it is 2 years old on youtube =/
I would definetly buy one and later one make some of my own.

Maybe I'll just extend the board like he did it and see where it goes.

[Minamisava]

Hello everyone,
some updates:
So I copied some boards and tryed out a design. I used some reference design and hope to be all correct. The aim was to have a low cost board with usb and all. I chose the 4-Cores version, because it is cheaper. The design follows the post. Feedbacks are welcome!

Im layouting in eagle and once I test it out I will put the schematics and layout up on github or something.

Following it I want to connect an xs1-l8 to a LVDS just for fun. It would use 4 pin-ports each way for about 240 Mbps (@60 Mhz I/O). Of course, each board would have 2 of such ports for a daisy chain. Tips are welcome.

problems:
I thought this power chain is quite long and was hoping to get some integration / miniaturization, like one switching regulator with 2 voltages and one 2-channel voltage dectector. Does anybody know a dual voltage dectector? I'm having trouble to find any with the 100 ns spec and for a reasonable price.
For the power supply I chose an adjustable switching regulator from TI -> TPS62420-Q1