I would like to connect an HDD 3.5 to the Banana Pi BPI-R4.
For that, i would like to use the XH-4PIN connector with the 12V output. Does anybody knows how many amp can it deliver ?
I took a look to the schema, it’s plugged to a MP2338GTL chip and the datasheet seems to say 2 amp…
More generally, i would like precisions on the power capacity of this board. It can take 12V/5A, 19V/3A, 20V by USB-C PD and 20V onboard input (5A also i guess). Are all of these option functional ? Does it affect the card’s behavior ? The 5V pin for the fan, how much can it deliver ?
i’ve got a project that is greedy in energy and searching how to provide like 10A at 12V
The SATA_05V on the SATA socket comes from +5VD. +5VD can provide about 9A of current, but this is for the entire board (including USB, PMIC, 26pIN Header and FAN), so it is not recommended that SATA_05V draw more than 3Amp, otherwise it will affect the system.
SATA_12V comes from MP2338GTL as you said, and can provide 3Amp.
In fact, the power supply voltage that R4 can accept is 9~24V, but the power consumption of R4 is relatively large. When the voltage is too low, the current required increases, which may easily lead to voltage instability and shutdown or restart. Therefore, it is recommended that if you do not use a WiFi network card, Use a 12V power adapter. but use a 19V power adapter when the WiFi NIC card is inserted
For the USB-C, we use a USB PD chip, which will automatically negotiate a 20V voltage output.
And for 12V/10A, there is no socket on our board that can meet this specification. so We may need to find another way.
I though about a power supply of 19V/6A (~100W), plug it in the DCIN and take it back on the card. Is there a way to do that ? I suppose the DC 20V input can’t be used as an output… or maybe weld a wire on the DCIN pin directly ¯_(ツ)_/¯
Yeah… nope not gonna happen.
You got two PCI-E 3.0 2Lanes Connectors on the Back of the Board for WiFI Module.
Not sure if both Together are 2 Lanes or 2x 2 Lanes.
But either way thats not enough for a decent GPU.
But that does sound like a fairly interesting Project.
Please tell us more if you indeed manage to get it running.
For Power Issue i’d recommend a separate PicoPSU You could use the 12V input.
Something like this:
Then you would have Normal Input for BPI-R4 and HDD’s directly on the PSU. No Problems with Load on the Board.