Hi everyone,
I've finalized the schematic for a battery-powered Zigbee smart blind controller and would be grateful for a review before I move to PCB layout. This is a revised version of a design I posted previously, now updated with a lot of great feedback.
Current Design Overview:
MCU: ESP32-H2-MINI-1 for a low-power Zigbee device.
Power: 3S Li-ion (12.6V) input, fully protected with a TVS, fuse, and reverse-polarity diode. A modern MP2330H buck converter provides the 3.3V rail.
Motor Control: DRV8871 driver with INA219 for current sensing. Includes an RC snubber, ferrite bead, and capacitors for EMI suppression.
Programming: Native USB via the ESP32-H2's dedicated pins (IO26/IO27), which also provides JTAG debugging. The USB-C port is ESD protected.
I believe the design is now robust and complete, but as I am new to this, I would appreciate any final checks or suggestions from the community.
I've attached the schematic below.
Thanks for your time and expertise!
The original thread can be found here: https://www.eevblog.com/forum/projects/seeking-feedback-on-new-esp32-schematic/msg6058185/#msg6058185