02-17-2021, 04:53 AM
So if not under-voltage (did you measure over all operations ?) then other connection criteria may apply...
Current draw...some instantaneous events from connected hardware can cause more current draw than is acceptable.(usually USB hard-drives but other devices can produce the same effects)
Noise/interference from poorly shielded devices..
The RPI4 official supply is 'Just Enough". Other instances of a better supply requirement are known... see 'Argon One' where a more powerful supply is specified.
A cable allowing a dedicated isolated supply may be of use and it is cheap to make...
https://www.tnt-audio.com/clinica/221_diy_usb_e.html
Current draw...some instantaneous events from connected hardware can cause more current draw than is acceptable.(usually USB hard-drives but other devices can produce the same effects)
Noise/interference from poorly shielded devices..
The RPI4 official supply is 'Just Enough". Other instances of a better supply requirement are known... see 'Argon One' where a more powerful supply is specified.
A cable allowing a dedicated isolated supply may be of use and it is cheap to make...
https://www.tnt-audio.com/clinica/221_diy_usb_e.html
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bob
bob
