USB Power Output
What is the maximum USB Power output for the 2 ports? I am trying to drive an 7" LCD display and having the power off of the USB port it only flickers.
If you want to operate the waveshare 7" on a RevPi Core 3 you need to use an external powered USB hub because we have restricted the USB ports of a RevPi Core 3 to the 500 mA maximum current defined by USB norm.
On a RevPi Connect you can draw up to 1 A from a single USB port but only 1 A in sum for both USB ports together (this is a violation of the USB norm but we've recognized that many vendors are violating the rule, e.g. waveshare or several GSM stick vendors). Please note that you could have simply answered your question by looking on the side printing of the case or the spec sheet ("Shop" or "Project" section). We have limited resources to run this forum and thus I would kindly ask you to search such information on these resources before posting in the forum.
On a RevPi Connect you can draw up to 1 A from a single USB port but only 1 A in sum for both USB ports together (this is a violation of the USB norm but we've recognized that many vendors are violating the rule, e.g. waveshare or several GSM stick vendors). Please note that you could have simply answered your question by looking on the side printing of the case or the spec sheet ("Shop" or "Project" section). We have limited resources to run this forum and thus I would kindly ask you to search such information on these resources before posting in the forum.
Unser RevPi Motto: Don't just claim it - make it!
Thanks! Is there any plans of releasing the schematic for the RevPi Connect?
They will be published. Please give us some time for preparing them for the web.
Unser RevPi Motto: Don't just claim it - make it!
Can someone confirm the USB power output for a REVPI CORE SE+ 32GB 100367
Thank you.
Thank you.
Hi
You can find these information in our datasheet (eg https://revolutionpi.com/wp-content/upl ... ore-SE.pdf)
Nicolai
You can find these information in our datasheet (eg https://revolutionpi.com/wp-content/upl ... ore-SE.pdf)
Hope this helps,2 x USB A (total current draw from both sockets together max. 900 mA)
900 mA USB output current (sum of both USB outputs) is only available with input voltages >11 V. The bridging time of voltage
dips of at least 10 ms required by EN 61131- 2 is only guaranteed with a supply voltage of 20.4… 28.8 V. At 12 V input voltage
this time decreases drastically, especially when driving loads by USB ports
Nicolai
