Reposted by randers
You saw the snep(s)! Whenever I've been there, it's been nothing but rocks. :(
November 16, 2025 at 9:05 PM
You saw the snep(s)! Whenever I've been there, it's been nothing but rocks. :(
Achtung gelbe Ampel, und Achtung Kreuzung.
November 13, 2025 at 3:50 PM
Achtung gelbe Ampel, und Achtung Kreuzung.
Soundcard in the current year? I think most people go for a USB DAC or stick with the motherboard audio. Especially on such an expensive mainboard I would expect it to be fine ^^
November 2, 2025 at 6:08 PM
Soundcard in the current year? I think most people go for a USB DAC or stick with the motherboard audio. Especially on such an expensive mainboard I would expect it to be fine ^^
*goes up in lithium smoke cutely*
October 26, 2025 at 11:36 AM
*goes up in lithium smoke cutely*
Fair. It's just hard to find fans in the 8k+ RPM range that only take 5V that are ALSO 4-wire fans. That's why I wanted to make 12V possible.
Also, with the lithium being handled by a commercial powerbank, I don't feel it's super risky.
I removed the PD trigger chip to save board space and cost.
Also, with the lithium being handled by a commercial powerbank, I don't feel it's super risky.
I removed the PD trigger chip to save board space and cost.
October 26, 2025 at 11:32 AM
Fair. It's just hard to find fans in the 8k+ RPM range that only take 5V that are ALSO 4-wire fans. That's why I wanted to make 12V possible.
Also, with the lithium being handled by a commercial powerbank, I don't feel it's super risky.
I removed the PD trigger chip to save board space and cost.
Also, with the lithium being handled by a commercial powerbank, I don't feel it's super risky.
I removed the PD trigger chip to save board space and cost.
This has the advantage that this design now works with literally any USB source, even low powered ones like computer USB ports and USB A to C cables!
October 26, 2025 at 10:31 AM
This has the advantage that this design now works with literally any USB source, even low powered ones like computer USB ports and USB A to C cables!
The USB-C source is activated using two 5.1k resistors on the CC lines now. I had provisioned connections of the CC lines to the microcontroller so I could do spec-compliant voltage sensing before turning the load on.
But luckily even on the highest power settings, I draw less than 500mA.
But luckily even on the highest power settings, I draw less than 500mA.
October 26, 2025 at 10:31 AM
The USB-C source is activated using two 5.1k resistors on the CC lines now. I had provisioned connections of the CC lines to the microcontroller so I could do spec-compliant voltage sensing before turning the load on.
But luckily even on the highest power settings, I draw less than 500mA.
But luckily even on the highest power settings, I draw less than 500mA.
PCB photos!
Saved:
- chip to request 12V via USB-C PD
- 12v to 5V linear regular
New:
- Boost converter based on the LM2735X
I also made the debug connections pads instead of through-holes to make room on the other side for SMD stuff.
Saved:
- chip to request 12V via USB-C PD
- 12v to 5V linear regular
New:
- Boost converter based on the LM2735X
I also made the debug connections pads instead of through-holes to make room on the other side for SMD stuff.
October 26, 2025 at 10:31 AM
PCB photos!
Saved:
- chip to request 12V via USB-C PD
- 12v to 5V linear regular
New:
- Boost converter based on the LM2735X
I also made the debug connections pads instead of through-holes to make room on the other side for SMD stuff.
Saved:
- chip to request 12V via USB-C PD
- 12v to 5V linear regular
New:
- Boost converter based on the LM2735X
I also made the debug connections pads instead of through-holes to make room on the other side for SMD stuff.