NOTE that 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.?
Although only rated 36 watts, I have used these to run an RPI5:?
? $6 ??
?$14 ? (has display showing mode and V)?
?
There are many converter modules, some with USB-C plugs, that do not support PD.?
? $9 ??
?$12 for 2 ??
I have used these, which 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 –edit? ? ?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?
?
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.?
? $8 for 2 C to C ??
? $9 for 5 A to C ??
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N0YWB