ESP32Copter Design

Our design is named ESP32Copter. It is mainly inspired by Espressif's ESP Drone design. We change some parts and add others. The chip crisis is a big challenge! Many parts are not available.

The Hardware Reference from Espressif

READ IT !!!

ESP32 Drone V1.2 Hardware Ref. Website
ESP32 Drone V1.2 Mainboard SCHEMATIC
ESP32 Drone V1.2 Mainboard BOARD LAYOUT

Espressif ESP Drone Bill of Material

TO BE DONE

ESP32Copter Bill of Material (BOM)

We are planning to use some other components. The column Ideal Part lists the components we would like to use but which are partly unavailable because of the chip crisis. The column ESP Drone Part is the ESP Drone reference design by Espressif, version 1.2. The column ESP32Copter Part shows the selection of our current design.

The original BOM (xlsx) can be found here

The following lists are not complete and still under construction!

Main Components: MCs and Sensors

Function	ESP32Copter Part	ESP Drone Part	Ideal Part	Source
main controller	ESP32 Wrover	ESP32 Wrover	ESP32 Wrover	https://www.reichelt.de/de/en/wifi-smd-module-esp32-d0wd-v3-16-mb-spi-8-mb-psram-18x31x3-3-esp32-wrover-ie-p300207.html
IMU, 6 DOF		MPU-6050		old design
IMU, 9 DOF			ICM-20948	not available
IMU, 9 DOF	MPU-9250			https://www.reichelt.de/de/en/arduino-grove-sensor-imu-10dof-v2-0-bmp280-mpu-9250-grv-imu-10dof-v2-p243392.html
compass	inside MPU-9250			https://www.reichelt.de/de/en/arduino-grove-sensor-imu-10dof-v2-0-bmp280-mpu-9250-grv-imu-10dof-v2-p243392.html
compass		HMC5883 (shield)		old design
barometric altitude sensor		MS5611 (shield)		old design
barometric altitude sensor	BMP280		BMP280	https://www.reichelt.de/de/en/arduino-grove-sensor-imu-10dof-v2-0-bmp280-mpu-9250-grv-imu-10dof-v2-p243392.html
optical flow sensor			PixArt PAA3905E1-Q with L242-ZSZ1 lens
optical flow sensor		PMW3901 (shield PMW3901 + VL53L1X)
TOF based altimeter		VL53L1X (shield PMW3901 + VL53L1X)
TOF based altimeter	VL53L1X		VL53L1X (?)

ESP32-WROOM-32E
ICM-20948
CP2102N
LP3961EMP-3.3V
PAA3905E1-Q to be used with PixArt’s L242-ZSZ1 lens
BMP280
VL53L1CB

Transistors, Regulators

Function	State	ESP Drone Ref.	Part	Specs.	Package	Note
Power N-Fet for motors	not available	Q4,Q5,Q6,Q7	IRLML6344TRPBF	N-MOSFET 5.0A 29mOhm 30V 2.5V 1.3W drv capable	SOT-23-3
MOUSER SEARCH
	option 1		SI2336DS-T1-BE3	N-MOSFET 5.2A 42mOhm 30V 1V 1.8W	SOT-23-3	20.427 in stock
	option 2		IRLML6244TRPBF	MOSFET MOSFT 20V 6.3A 21mOhm 2.5V cpbl	SOT-23-3	132.372 in stock
	option 3		RQ6E050AJTCR	MOSFET 30V N-CHANNEL 5A 35mOhm 1.25W	SOT-457-6 / SOT-23-6	5.235 in stock
	option 4		PMV15ENEAR	N-MOSFET 6.2A 20mOhm 30V 1.3W	SOT-23-3	4 in stock
Ferrite Bead, 330 Ohm @ 100MHz
To be done
LDO 2.8V, fixed, for camera	Chinese brand, not available	U2	ME6211C28M5G-N
MOUSER SEARCH

Misc Information

Optical Motion Tracking Sensors by PixArt
https://micro.ros.org/blog/2020/08/27/esp32/
Footprint / package size comparison by Onsemi, 6 leads