The Raspberry Pi 5 normally requires USB-C Power Delivery protocol (
PD) to operate.?
The PD spec only requires 3A at 5 volts, but the RPi5 bends the rules, and requests 5A at 5.2V from the PD source.?
?
There are only a few 12V to 5V converter modules with USB-C connectors that support PD.?
I have used these to run my RPI5:?
? $6 ??
?$14 ? (has a display showing mode and V)?
?
There are many converter modules, some with USB-C plugs, that do not support PD.?
?$10 ??
?$14 for 2 ??
These will work fine, if you first
set a parameter in the RPi5 hardware configuration?
to ignore PD, and assume 5A is available. ?On the terminal command line, enter:?
?sudo rpi-eeprom-config ¨Cedit? ? ? ? Add the line:?
?
PSU_MAX_CURRENT=5000?
And add the following to the end of file
/boot/firmware/config.txt:?
?
usb_max_current_enable=1?
??
This 10Ah 5V rechargeable battery pack will run an RPi5 all day.?
$25 ??
?
Note: The RPi5 will deliver an "Under-voltage" warning when operating below 4.63 volts.?
To see what the RPi5 measures on the 5V input, enter on the terminal:?
?
vcgencmd pmic_read_adc | grep EXT5V_V?
You will be surprised at the voltage drop in most USB supply cables!?
Most USB cables are poorly made with flimsy wires.?
?
Buy a power cable with thick wires, rated for Quick Charge or PD.?
? $9 for 2, C to C ??
$10 for 5, A to C ??
??
N0YWB