I2C addresses not detected when using the Power Management & UPS HAT

Sixfab Power HAT & Software
1

I cannot get my Power Management & UPS Hat to work. When connected to the Raspberry Pi 4 with the battery and power via USB-C, the Raspberry Pi will not boot. L1 is green, L2 is Red. The only way the Raspberry Pi will power on is if I plug USB-C into the USB-C power port on the Raspberry Pi itself.

I did some troubleshooting and did notice that the power hat is not showing up in i2cdetect. For testing to ensure i2c was enabled, I connected a 2 line LCD that is controlled by i2c. It was detected and had an address in i2cdetect.

Does anyone have any suggestions? I also have the 3G/4G&LTE BASE HAT and it is not detected as having any i2c addresses as well.

Thank you.

2

Hi @ty.purcell,

The UPS HAT uses 0x41 I2C address. The sensor on the battery uses 0x48 i2c address. Make sure it is not conflicting with another device using the same address.

pi@raspberrypi:~ $ sudo i2cdetect -y 1
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
40: -- 41 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
70: -- -- -- -- -- -- -- --

The Base HAT doesn’t work via i2c. It works via USB/UART.

Also, could you share a picture of your hardware setup?

3

Thank you for the reply. Right now for testing I only have the Power Management/UPS hat installed:

IMG_1960
IMG_1960480×640 83.4 KB
IMG_1959
IMG_1959480×640 62.3 KB
IMG_1958
IMG_1956
IMG_1956480×640 81.6 KB

Also, here is the output from my i2cdetect showing nothing being detected.

IMG_1962
IMG_19622016×1512 778 KB

4

Please install UPS HAT as below picture and follow the steps from the video to prepare your hardware.

800×800 111 KB

5

Well - obvious mistake I should have caught! I watched the video, probably just not all the way. Thank you for the help!