ELogs/Electronics: Difference between revisions

Revision as of 15:31, 28 July 2025

Electronic Log for Electronics Development

Power distribution board required for QuARC.
Provide power for Raspberry Pi and DDC boards from single DC input:
- 5V/5A for Raspberry Pi via USB-C
- >7.5V (5A?) for DDC board daisy chain via 2.5mm barrel
Single USB-C PD input: 20V/5A
- Needs USB-C PD voltage negotiation chip
Fallback option with 20V DC 2.5mm barrel jack input
LEDs to indicate each voltage is provided correctly:
- 20V input
- 5V to Raspberry Pi
- >7.5V to DDC boards
Should be able to switch off LEDs
Necessary to switch between input power supplies?
Ensure both power outputs stable: no drop-outs!
- Potential for USB-C PD to drop out when voltage renegotiated?

Ready for experimental visit to Trento, 28th September 2025

Remove RESET connection from CC2 pin on all DDC board USB-C connections

Revision as of 15:31, 28 July 2025 (view source) SimonJolly (talk \| contribs) No edit summary ← Older edit		Revision as of 15:31, 28 July 2025 (view source) SimonJolly (talk \| contribs) No edit summary Newer edit →
Line 4:		Line 4:

	[mailto:peter.hastings@physics.ox.ac.uk Pete Hastings]		[mailto:peter.hastings@physics.ox.ac.uk Pete Hastings]

	[mailto:mark.jones@physics.ox.ac.uk Mark Jones]		[mailto:mark.jones@physics.ox.ac.uk Mark Jones]