openUC2 / openUC2_SOOP

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Power interface and distribution #3

Open christiankuttke opened 3 days ago

christiankuttke commented 3 days ago

Design a power distribution solution that fits in the box, has 1 universal power input, and gives all devices their needed power.

christiankuttke commented 3 days ago

Proposed input:

220V AC Kaltgerätekabel (C14, Buchse C13) with fuse on the outside of the device.

Power switch should have a power indicator light but should be protected from accidental turn off.

C13 is available in a locking variant which is preferable, if available.

christiankuttke commented 2 days ago

Devices to power, ordered by Power Nets

Estimates are worst-case and over-specced.

12 V

Our uc32_standalone board featuring TMC2202 drivers, ESP32, interfaces for illumination, encoders, limit switches, PWM output (3A or more if necessary)
Hard drives (HDD spinning) at spin-up 2A per drive

5V

Raspberry Pi Screen (500 mA worst case)
Nvidia Jetson Nano (3A)
Raspberry Pi (3A)
GPS module: 1A
HDD: 2 A
SSD: 1 A

Totals

worst-case, with 1 spinning HDD

12V 5A and 5V 6.5 A

All other devices can be powered by the boards and are probably covered by the generous estimates of those board's consumption.

beniroquai commented 2 days ago

This would be a high-level wiring chart:

now:

minimize(number(cables))

beniroquai commented 2 days ago

File available here: https://github.com/openUC2/openUC2_SOOP/blob/master/IMAGES/UC2_SOOP_Overview.pptx

In best case we have one single wire in. Let it be 12V to supply also the SBC

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christiankuttke commented 2 days ago

I would put a C13 jack on the outside of our case and power supplies inside. The Kaltgerätekabel is universally available. Power supplies 220V AC to 12 or 5V DC are available as THT component (Meanwell) to save space in the box.

On Fri, Jun 28, 2024, 20:51 Benedict Diederich @.***> wrote:

File available here:

https://github.com/openUC2/openUC2_SOOP/blob/master/IMAGES/UC2_SOOP_Overview.pptx

In best case we have one single wire in. Let it be 12V to supply also the SBC

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