Best posts made by JiKuch

M5Stack is the perfect platform for the professional design of own solutions.
I have received first CORE development kit wit ESP32 and tested Arduino examples.
I have not encountered an unsolvable problem.

However, I would like to ask you to clarify the following:

1. What does HPWR represent in M-BUS? What is it good for?

2. I did not find the GROVE I2C connection in the schematic. Since it contains 5V power level, does it mean that both SCL and SDA have a 5V pullup (with level conversion to ESP32)? Or is SDA and SCL connected directly to GPIO21 and GPIO22 without level conversion and need to keep up to 3.3V for GROVE SCL and SDA?

Thanks in advance for your answer.

Under this link IP3506 AUTOMATIC STANDBY was discussed the M5 Power Bank module.
Here is the inspiration from the realization of this module:

1. Schema
   

2. BOM
   

3. PCB for hand soldering
   

4. Case - 3D printed
   

5. Final functional module
   

M5 Power Bank with IP5108 fully replaces M5 BOTTOM:

• The module also contains a magnet (big one)
• External M-bus (fully) is on the right side (female 2x15)
• LED indicator and On/Off button is on the left side
• LED functionality can be selected (5V, On/Off=IRQ, GPIO00 or GPIO01 software control)
• On/Off button functionality can also be programmed thru IP5108 registers

WARNING:
The module is designed to be connected directly to the M5 CORE because the components enter the space of M5 CORE!