Greg
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gregdavill.bsky.social
Greg
@gregdavill.bsky.social
ASIC/FPGA/PCB/FW engineer at ASTC 🧙‍♂️ (He/Him)

I also take macro photos of electronics
Board manufacturer date of wk10 2024. Wild that this issue is still making it into designs.
September 28, 2025 at 11:08 PM
Did you have the same reaction? 🤣
a man in a yellow shirt is sitting in a chair holding a cup and pointing
ALT: a man in a yellow shirt is sitting in a chair holding a cup and pointing
media.tenor.com
September 26, 2025 at 6:16 AM
If by fab house, you mean my a toaster oven in my fabulous houses garage? Then yes. 🙌
September 1, 2025 at 10:41 PM
Small update to PCB and I forgot to buy a new stencil 😅
September 1, 2025 at 10:09 PM
When I started using brand name AMTECH flux. I realised it had a “sweet” smell, then immediately bought a fume extractor, because I realised if I was smelling that I was 100% inhaling the rosin and additive vapours 💨😵‍💫
September 1, 2025 at 1:46 AM
The bodge works!
A DFF in front of the ECP5's FPGA SPI configuration port before a mix leading to FLASH and PSRAM. Enabling an initial jump through FLASH where the clock frequency is bumped and QSPI entered.
This now fixes an issue violating the PSRAM's tCE<8us requirement.
August 17, 2025 at 10:41 AM
I’ve noticed looking at some modern SMD 32k quartz crystals may have what look like laser trim dots on the forks. Could that be one reason to manufacture these with a glass top rather than metal?
August 17, 2025 at 4:39 AM
Nicely done! Looks similar to the XPS I did the same mod to. Resistor straps to inform BIOS of larger DRAM parts. Luckily I got a board-view which shower the net names. Made it easy to work out the 16GB variant.
August 15, 2025 at 5:01 AM
Why is my circuit board lying to me 🥲
August 3, 2025 at 7:57 AM
“I’d rather write the hw” much easier 😆😆🤣
July 26, 2025 at 2:24 AM
Impedance control is a myth. A term made by big circuit to sell more ground planes. /s
June 27, 2025 at 11:26 PM
Smoke test passed! 🔥
Voltages all look good
June 24, 2025 at 7:08 AM
😍 Freshly assembled, still not sure if the design even works 🫣
June 24, 2025 at 3:45 AM
Decoupling? Yes. ✅
June 12, 2025 at 9:21 AM
A nice solder paste application 🫠
June 12, 2025 at 9:13 AM
Circuit boards are in! 👌
June 12, 2025 at 1:42 AM
Designed a quick and simple 3d printed case
June 2, 2025 at 10:40 PM
Unfortunately not, this is actually an old ButterStick r0.2
May 31, 2025 at 1:59 AM