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

R7
Resistance
1kΩ
R19
Resistance
4.7kΩ
R3
Resistance
1kΩ
R5
Resistance
120 Ω
R14
Resistance
1kΩ
R11
Resistance
1kΩ
R9
Resistance
120 Ω
R18
Resistance
4.7kΩ
R15
Resistance
1kΩ
R2
Resistance
1kΩ
R12
Resistance
100 Ω
R17
Resistance
4.7kΩ
R4
Resistance
100 Ω
R6
Resistance
1kΩ
R13
Resistance
120 Ω
R8
Resistance
100 Ω
R10
Resistance
1kΩ
R1
Resistance
120 Ω
R16
Resistance
100 Ω
C3
Capacitance
0.1uF
Front R
Q5
Rear R
J1
Q4
Front L
C4
Capacitance
2.2nF
Q1
Q3
Q6
Q8
C2
Capacitance
0.1uF
Q7
Rear L
C1
Capacitance
2.2nF
Q2
IC2
BATT
IC1
ESP32-CAM1

ESP32 Drone