[hpsdr] Introducing the Hermes-Lite

[John Marvin]

Steve,

This is really cool! I suspect this is going to take off, especially if 
TAPR is willing to produce finished boards (after a little more 
shakedown and polishing by early adopters). Even if not, I've been 
wanting to take my surface mount skills to the next level, but wasn't 
willing to try something as expensive and as complicated as a Hermes 
board from scratch.

So, who wants to be in the first wave of early adopters? Can we get 
together a group purchase of PCB's and components? Perhaps there should 
only be a small number of people in the first wave, who are willing to 
build immediately and help refine things for the next group. I'm willing 
to help or coordinate things, but I would need help with understanding 
and completing the process of preparing the gerber files for submitting 
to a PCB vendor. I would also need someone else to do any modifications 
that might be required (since I am not familiar with the tools 
involved), based on Steve's replies to the questions below?

Some quick questions and a request:

1) The picture you provided showed some small jumper wires, one on the 
FPGA board and one on the Hermes Lite board.  What were these required 
for? If required, I'm assuming the Hermes Lite board can be modified to 
remove the need for the jumper wire, correct? Are there any more jumpers 
that are not visible?
Any other changes you would suggest for a version 2 board?

2) Any chance you could provide higher resolution photos of both the 
front and back of the Hermes Lite board without the FPGA board attached?

Thanks!

John
AC0ZG

On 4/13/2014 4:05 PM, Steve Haynal wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
>
>
> Hello List,
>
> I have been working on a lower cost variant of the Hermes which I am 
> calling Hermes-Lite. All the details are at
>
> https://github.com/softerhardware/Hermes-Lite
>
> The design is entirely open source and open hardware. The cost of all 
> materials (including the BeMicro SDK board) is around $150. The FPGA 
> firmware is a port of the Hermes RTL and is compatible enough to work 
> with existing Hermes software. The ADC/DAC is the AD9866 12-bit 
> integrated device intended for cable modems which I have repurposed as 
> a 0-36 MHz transceiver. RX/TX tests of my prototype show good 
> performance. The github site has instructions for listening to the 
> receiver online.
>
> I had hoped to have a more polished project before releasing, but I am 
> starting a new job tomorrow and will have limited time for this 
> project. Any help on this project or derivatives is welcome.
>
> Thank you to all the people at openhpsdr who developed the Hermes and 
> provided valuable IP to reuse in this project.
>
> 73,
>
> Steve
> KF7O
>
>
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