Open Source Hardware Geek
Joined January 2009
- Tweets 13,281
- Following 599
- Followers 6,251
- Likes 10,891
111 Photos and videos
Tim 'mithro' Ansell retweeted
Jun 2
My latest gizmo arrived today!! This is the @tinytapeout FPGA development kit. It has a Lattice #UP5K FPGA on a PCB with headers and a pinout compatible with the Tiny Tapeout ASIC demo board.
ALT Small PC board with some stickers and colorful packing material
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Tim 'mithro' Ansell retweeted
Jun 1
NoLoRa: Team from Edinburgh demonstrated LoRa transmission on MCUs with no radio chips, by utilizing the 27th harmonic of the SPI peripheral
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Tim 'mithro' Ansell retweeted
Apr 26
The final RTL is here: github.com/polyfractal/Break…
But it's transpiled from Spade which I haven't pushed to github yet (need to do some cleanup first). Will publish it soon
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Tim 'mithro' Ansell retweeted
Apr 26
Yep GF180! I used all open source tools, they provide a LibreLane/OpenRoad project template (github.com/wafer-space/gf180…) that configures the build flow. Just drop in your RTL
I went from newbie to taped out in ~2 months. Steep learning curve but mostly the RTL side!
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Tim 'mithro' Ansell retweeted
Apr 25
Stoked to get the packaged chips and see if they actually work! What a fun project, huge thanks to wafer.space for making this possible!
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Tim 'mithro' Ansell retweeted
Apr 25
Super zoomed in views are tough since the upper routing and dummy fill-metal obscure a lot of the neat details.
Going to try and delayer these with some manual lapping. We'll see how that goes, but since there are only 5 metal layers I'm hopeful we can get something usable 🤞
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Tim 'mithro' Ansell retweeted
Apr 25
Corner art came out great! 😍
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Tim 'mithro' Ansell retweeted
Apr 25
Hard to describe the feeling of holding silicon in your hand that you've designed 🥺
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Tim 'mithro' Ansell retweeted
May 19
Amazing @hackaday europe, in Lecco. @tinytapeout team meet (nothing like inperson), time with @mithro, old friends and new, even met some really cool guy with a swiss accent. Thanks to all who came for making it so awesome!
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Tim 'mithro' Ansell retweeted
May 17
「JLC2KiCad Web UI」を公開しました！
JLCPCB(EasyEDA)のPart Numberを指定するとKiCadの部品ライブラリ形式に変換する"JLC2KiCad"のWebUI版です。
ぜひ使ってみてください
tsukutta.app/apps/e79709da-7…
#Tsukutta #個人開発
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Tim 'mithro' Ansell retweeted
Apr 24
You can make your own silicon with wafer.space too! Our second shuttle run is open at buy.wafer.space with a new $4 USD per die option!
Apr 23
First silicon just arrived.
These dies are from the first wafer of my GF180MCU based Linux SoC KianV, built with a fully open source ASIC flow.
This chip was part of the wafer.space GF180MCU run and hardware validation comes next.
Big thanks to Leo Moser for help with the ASIC flow and to @mithro and @evezor for their guidance along the way.
The picture shows the first dies. More bring up updates soon.
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Tim 'mithro' Ansell retweeted
May 2
or a more aggressive 4:1 mux for ADDR/DATA into 16-bit and use 4-2-2-2 cycles for 4x32-bit burst, which may be in sync with an external SDRAM in case of cache miss...
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Tim 'mithro' Ansell retweeted
May 2
well, I am waiting no less than a 3-4 chipset solution for an Amiga500-like machine, modernized with RISCV, SDRAM and VGA frame buffer! 🤣
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Tim 'mithro' Ansell retweeted
May 2
@mithro
next KianV Stealth performance SoC 👆 wafer.space gf180mcu style
May 2
the mux bus concept can be used across multiple chips to handle the MMU/L2/SDRAM (aka north bridge) and another smaller with UART, TIMER and SPI (aka south bridge)... to save pins, the SDRAM 16-bit data bus can be attached directly...
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Tim 'mithro' Ansell retweeted
4 Aug 2025
Forget GPUs. Map the RISC-V register file to HDMI, use it as a framebuffer, and blast RISC-V across the screen on a kianV bare-metal beast. @davepl1968
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Tim 'mithro' Ansell retweeted
Apr 23
Autotest of MicroPython firmware on Arty LiteX SoC (Testing simple peripherals and also Ethernet/SDCard).
Apr 23
LiteX port of MicroPython has been refreshed and enhanced with new peripherals support! Enjoy :)
github.com/litex-hub/micropy…
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Tim 'mithro' Ansell retweeted
Apr 23
First silicon just arrived.
These dies are from the first wafer of my GF180MCU based Linux SoC KianV, built with a fully open source ASIC flow.
This chip was part of the wafer.space GF180MCU run and hardware validation comes next.
Big thanks to Leo Moser for help with the ASIC flow and to @mithro and @evezor for their guidance along the way.
The picture shows the first dies. More bring up updates soon.
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Tim 'mithro' Ansell retweeted
Apr 23
去年の12月にTO(テープアウト)したWafer.Sapce GF180 Run 1 のサンプルベアダイが到着しました。
サンプルのベアダイ(生チップ)なので、現状では写真を撮るくらいしかやることはありませんので、写真を撮りました！
ishi-kai.org/waferspace/shut…
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