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A few questions about a h...
Forum: General Questions
Last Post: tistructor
11-13-2020, 03:57 PM
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Could not detect an Au!
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11-11-2020, 12:07 AM
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DDR3 speed in example
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11-10-2020, 02:47 PM
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Question Shield Mojo to A...
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11-09-2020, 11:07 PM
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Alchitry-Labs Config file...
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11-09-2020, 10:50 PM
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Typical lead time for bac...
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11-09-2020, 05:55 PM
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Question about this expre...
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11-09-2020, 05:25 PM
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Could not detect a Mojo! ...
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11-09-2020, 02:33 PM
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DDR3 speed of READ comman...
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11-09-2020, 01:05 PM
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Alchitry labs closes by i...
Forum: General Questions
Last Post: tistructor
11-05-2020, 09:36 AM
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  Alchitry Labs -> Alchitry Loader
Posted by: ramonae86 - 08-27-2020, 07:11 PM - Forum: General Questions - Replies (1)

So I was using Alchitry Loader fine in the beginning, both interface 0 and 1 were FTDI driver.

Then I used zadig to change Interface 0 to WinUSB, and I was able to use Alchitry Labs to interact with the board.

But then I tried to switch back to Alchitry Loader again, it seems I just can't get it working whatsoever. I tried to delete the driver from device manager, tried all kinds of drivers in Zadig, I just couldn't reset the Driver to the propriatary FTDI driver and couldn't program the board with Alchitry Loader, it always says Can't Find Device.

Any suggestions? Thanks

  PING))) Ultrasonic Distance Sensor
Posted by: john.tilghman@protonmail.com - 08-26-2020, 06:03 AM - Forum: General Questions - Replies (1)

I am trying to see if anyone has used the PING))) Ultrasonic Distance Sensor before.

It has some interesting timing to be able to use it, as well as it's triggered as well as the return echo come back on the same pin.

PING))) Ultrasonic Distance Sensor I have a lot of these to drive and a AVR just bogs down the more you put on.

From the website:

Quote:Interfacing to a microcontroller is a snap. A single I/O pin is used to trigger an ultrasonic burst (well above human hearing) and then "listen" for the echo return pulse. The sensor measures the time required for the echo return, and returns this value to the microcontroller as a variable-width pulse via the same I/O pin.

Thanks for any insight.


Lightbulb Feature Request: Full FTDI Connection on Alchitry Cu
Posted by: rrc - 08-24-2020, 10:08 PM - Forum: General Questions - Replies (1)


as I am now working with connecting the Alchitry Cu with my application I had a closer look on the FTDI-Chip. It is possible to do multiple modes as UART, SPI and parallel with it. On the schematic only two pins of the port B for communication with the FPGA are connected (usable for UART). It would be a very nice feature if the user can optionally connect the other pins to the FPGA (for example with jumpers or solder pads for 0 Ohm resistors). This would lead to a gain of data rate (if using parallel mode) if someone is trying to do something with high data throughput. Additionally communicating with SPI can be more simple to implement for beginners and makes it easier to migrate on a micro-controller application (relevant for hardware accelerators).

What do you think about it?


  VHDL to Verilog Conversion
Posted by: rrc - 08-22-2020, 08:05 PM - Forum: General Questions - Replies (2)


does anyone know a good VHDL to Verilog converter?

I am using the Alchitry Cu with icestorm/nextpnr. And as yosys only works with Verilog I can not apply my VHDL knowledge.

I currently write stuff in Verilog but it is not my language of choice Wink


  Generated Verilog
Posted by: john.tilghman@protonmail.com - 08-22-2020, 02:29 AM - Forum: General Questions - Replies (2)

Does anyone know if you can see and/or work with the Verilog code that is created from using Lucid and Alchitry Labs ?

I would like to see my code and be able to use the schematics that Vivado makes.


  Found a some good starter information..
Posted by: john.tilghman@protonmail.com - 08-18-2020, 01:57 AM - Forum: General Questions - Replies (2)

Found a some good starter information..

Notes on setting up and using Alchitry FPGA boards

  Loader "No Devices Found!" Au Windows 10
Posted by: BNW - 08-15-2020, 01:14 PM - Forum: General Questions - Replies (3)

I'm trying to use alchitry-loader.exe or loader.exe so I can do my projects in Vivado and it cannot locate the device. This is what my command line looks like:

C:\Program Files (x86)\Alchitry\Alchitry Loader\tools>loader -l

No devices found!
I am, however, able to write in Alchitry Labs, so I know the drivers are working. I also downloaded the Windows Drivers in this tutorial: https://alchitry.com/pages/alchitry-loader. I have confirmed that WinUSB is installed for Alchitry AU Interface 0 and 1. 

Any help would be greatly appreciated!

  Microphone Array Shield
Posted by: Mudkip177 - 08-14-2020, 01:29 PM - Forum: General Questions - Replies (1)

The mic array seems like a pretty cool project.  Are there any plans to make the shield available?

  Story behind Alchitry
Posted by: Mudkip177 - 08-14-2020, 01:21 PM - Forum: General Questions - Replies (1)

alchitry -- As a chemical engineer I appreciate that Alchitry is a portmanteau of alchemy and circuitry.  That is a cool why to think about the FPGA.  It is clever how this extends to your logo.  You also write that FPGAs are magical.  This shows that FPGAs really captured your imagination.  Can you give us more insight into your experiences that led to the Alchitry project?

  Loader for MacOS?
Posted by: prebys - 08-11-2020, 09:17 PM - Forum: General Questions - Replies (2)

What are the prospects for a MacOS version of the Au loader?

I use the Au boards for a university lab class in the Winter Quarter, and I'm preparing myself for the possibility we may have to do it remotely.  We can arrange to have the students remotely access Windows or Linux machines to compile the code, but some only have Macs at home.

It looks like the Linux version is written in Java, so it shouldn't be *that* hard to port to MacOS, right?