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elmor

eVc ordering

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Hardware design is pretty much done, firmware and software have basic functionality. The earliest I could have something close to final would be end of January.

Edited by elmor
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On 1/21/2019 at 8:58 PM, elmor said:

A little bit of progress, this is already quite a few revisions in...

evc2l.jpg

Any progress or updates on this ?

 

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image.thumb.png.bc3a3fa2acb07a4bf769fc3d2613d96b.png

Yes, sorry things are going slowly. A very limited number of samples have gone out for development testing. Also got the first pictures from the factory where I've ordered an initial batch. Unfortunately they messed some things up and will delay this another week or so while they produce a new PCB.

Here it is in action: https://youtu.be/Fbw1CZp-GNE?t=381

Quick specs:

- 3x I2C headers working at 3.3-5.0V

- 1x UART header, TX 3.3V RX 3.3-5.0V

- 1x SPI header 0.8-3.6V with on-board controllable LDO for feeding power

- VMOD header which is essentially the same as ROG Hotwire (sense and modify the feedback circuit of a voltage controller)

- Built-in USB bootloader for firmware upgrades (essentially unbrickable)

- Micro-USB cable for connecting to the PC

Bundled:

- 3-pin 2.54mm to 3-pin 2.54mm 40cm cable (I2C/UART)

- 2x 3-pin 2.54mm to open end cable (I2C/UART)

- 2x 2-pin 2.54mm to open end cable (VMOD)

- 1x 1-pin 2.54mm to open end cable (Ground)

- SPI cable for Asus motherboards

- SPI cable for MSI motherboards

- SPI cable for Asrock motherboards

(SOIC8 test clip can be bought separately for Gigabyte boards, they don't have headers for flashing)

Additional info:

- I2C1 supports I2C listening/sniffing to figure out what's being sent on the bus it's connected to, which is very useful for figuring out how to talk to undocumented ICs

- I2C3 supports SSD1306 128x64px I2C OLED displays as seen in Roman's video for displaying various information (optional add-on)

- The SPI header is targeted for external BIOS flashing. Can be very useful for flashing mod-BIOSes or recovery. Can also be used to update the EC firmware on some boards.

 

Edited by elmor
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37 minutes ago, elmor said:

Getting there

oh-god-i-need-it-i-need-it-meme.jpg

I have a question I'm hoping you'll be able to answer. Of course you know the answer but can you share ?

811700704_I2Cpinout.jpg.3b67076b1e3edf47c958b8820f4d08b8.jpg

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2 hours ago, GtiJason said:

oh-god-i-need-it-i-need-it-meme.jpg

I have a question I'm hoping you'll be able to answer. Of course you know the answer but can you share ?

811700704_I2Cpinout.jpg.3b67076b1e3edf47c958b8820f4d08b8.jpg

It's not always the same, but what I've seen the most and what the evc uses is:

1 - GND (square)

2 - SDA

3 - SCL

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Not quite ready for Computex. The price should be ~35 USD excluding the display which is a $5 add-on.

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