Want to borrow lattice or ice40 board supported by yosys and nextpnr

Alon Levy

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Jul 8, 2019, 3:19:13 PM7/8/19

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Does anyone have available to lend, or perhaps we have in the space:

An ice40 board

Lattice of the following:
Lattice ECP5-5G Versa Development Kit
Lattice ECP5 Evaluation Board
Radiona ULX3S

Thanks in advance,

Alon
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Yair Reshef

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Jul 9, 2019, 1:59:00 AM7/9/19

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Almost sure we have one. In original box even.

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kfir bar-am

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Jul 9, 2019, 7:23:14 AM7/9/19

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I think i saw the Dev board in the space a few months back.

Iook into icebreaker by scanlime if you wish to get your FPGA fo up to speed.

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Udi Finkelstein

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Jul 9, 2019, 7:30:13 AM7/9/19

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I think icebreaker is needlessly expensive.

If you want to learn about FPGAs, the TinyFPGA BX will host larger designs and half the price.

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Udi Finkelstein

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Jul 9, 2019, 7:33:48 AM7/9/19

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I partly retract what I said. The UP5K device in the icebreaker has less logic elements, but has 8 DSP blocks and much more SRAM.

kfir bar-am

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Jul 16, 2019, 8:50:08 AM7/16/19

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thanks for the reference though :D

it's always fun to find more projects like this.

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Alon Levy

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Jul 16, 2019, 8:52:30 AM7/16/19

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I forgot to mention (not responding to kfur's message but latching on) that I have an early fomu with no firmware and if anyone wants it or wants to help me get it to boot that would also do. It is a lattice based board. (crowdsupply)

Udi Finkelstein

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Jul 16, 2019, 10:25:09 AM7/16/19

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I also have two FOMUs with no bootloader as well.

I have ordered pogo pins (I have 3 different types, ~100 each) and have iterated a test jig to program them but didn't finish it since the enemy of the good is the perfect.

The good would have required me to solder the wires after inserting the pogo pins into the 3D printed jig.

The perfect was a multi-part jig that could let me insert pre-soldered pins into slots and then close the jig via another part.

https://github.com/udif/openjscad-objects/commits/master/fomu_jig.jscad

The jig was designed using the web-based openjscad.org

This is the latest:

https://openjscad.org/?uri=https://raw.githubusercontent.com/udif/openjscad-objects/5ca5f169eada9166c8cc8dad78f97884532362e6/fomu_jig.jscad

You're supposed to print both parts, insert the pins into the slots and then insert the cover to hold the pins in place.

It doesn't work correctly, yet, forgot the reason. It still needs work.

Udi

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