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<p>Migrated comment #2134</p> <p><b>New page</b></p><div>I need some help for using your UPS3 with other HATs in the same system. What are all the GPIO pins the UPS3 uses? Studying your Wiki and Github info I find:<br /> <br /> - LED brightness (control): GPIO 18 controls LEDs, and this can be changed to GPIO 12 (either provides Pi PWM0). I must also change the &quot;DI&quot; strap on the UPS3 board, next to the &quot;POFF&quot; strap to use GPIO 12, correct?<br /> - Power off control: Using the UPS3_power_off_guide, if I strap connect GPIO 6 and then drive GPIO 6 high then the UPS3 immediately turns off power to the 5V output, correct?<br /> - I2C port used: Uses Pi I2C1 interface on Pi P1 connector pins 3 and 5, correct?<br /> - Battery charger chip BQ25895: Uses I2C address 0x6A, correct?<br /> - Battery fuel gauge chip MAX17048: Uses I2C addresses 0x6C and 0x6D, per the Maxim datasheet. However, your smartups.py code has &quot;MAX17048_ADDR = 0x36&quot;. Which is correct, and how does this work?<br /> - Are there any other resources on the Pi P1 connector that are used, so that I can avoid conflicts in my board design?&lt;!-- migrated from Comments; original IP: 68.227.235.171 --&gt;</div>

68.227.235.171