Microphone Preamp Design Assistance

Sure — here’s the simple cheat sheet version.
ESP32 motor pin cheat sheet

Table


MotorESP32 control pinMOSFETMotor connector
Front leftESP32-CAM1 IO0_0Q2Front L
Front rightESP32-CAM1 IO0_1Q4Front R
Rear leftESP32-CAM1 IO0_2Q6Rear L
Rear rightESP32-CAM1 IO0_3Q8Rear R
Battery and power path

Table


ItemConnection
Battery +BATT PIN1 -> VBAT
Battery -BATT PIN2 -> GND
Motor supply sourceVBAT goes to drains of Q2, Q4, Q6, and Q8
ESP32 powerVBAT also feeds ESP32-CAM1 5V
Motor connector wiring

Table


Connector pinMeaning
Pin 1Switched motor positive from MOSFET source
Pin 2GND
Super short summary
  • ESP32-CAM1 controls 4 motors with IO0_0 to IO0_3
  • Each output drives one MOSFET: Q2, Q4, Q6, Q8
  • BATT provides VBAT
  • Motors connect between each motor header and ground
If you want, I can also make this into a 1-line wiring map like: IO0_0 -> Q2 -> Front L, etc.
Can you fix the wiring and adjust the wiring
Yes, but not in this project directly because you only have view access here. Rewiring is a multi-step project modification task that normally goes through a plan/execution flow .
The easiest way is to fork this drone project into your own editable copy and continue there:
After you open the fork, I can help you:
  • inspect the current motor wiring
  • fix the battery and ground path
  • verify each ESP32 motor control connection
  • summarize exactly what changed
If you want, I can also help you decide what wiring should be corrected first before you open the fork.
Prioritize wiring issues
Review motor mapping
Check battery path
C2
Capacitance
0.1uF
C1
Capacitance
2.2nF
I2C_SDA
+3V3
I2C_SCL
IC1


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ESP32 Drone

ESP32 Drone thumbnail
ESP32 Tiny Drone by Jon VB I wanted to make a low cost drone with all the bells and whistles, so people working with a small budget can get into the drone game. #allThingsRobotics ~$50

Pricing & Availability

Distributor

Qty 1

Digi-Key

$7.30–$12.73

LCSC

$6.97–$7.25

Mouser

$8.71

Controls