Project Issues Review

Thought for 16 sec

The current draw depends on your operating conditions and load. For example, are you referring to the board's idle current (e.g., when the ESP32 is running but motors are off) or the maximum current when the motors drive a load? Please let me know so I can help you further estimate the total current.

erhash

Estimate the current draw when the ESP32 is running, and connected peripherals are in their idle state.

Thought for 31 sec

flux

Based on typical components, here are some rough estimates:

The ESP32-DEVKIT-V1 typically consumes around 80–100 mA when active with Wi‑Fi enabled.
An OLED display (like the 0.96″ display on your board) in idle may draw roughly 10–20 mA.
The motor driver (e.g. U2) in standby mode might draw only a few milliamps (around 5–10 mA).
Other minor peripherals (sensors, push buttons, etc.) could add a few more mA.

Therefore, a reasonable estimate for the total idle current—when the ESP32 is running and peripherals are in their idle state—would be in the 100–150 mA range.

This is only a ballpark figure; for a more precise value, you would need to check the datasheets for each component and consider your exact operating conditions.

Idle current estimation

MotorA_IN1

MotorB_IN1

Encoder2_ChA

I2C_SCL

Encoder2_ChB

MotorA_IN2

Button3

QTR1

I2C_SDA

I2C_SCL

MotorB_IN1

MotorB_IN2

Button2

IBUS_TX

Button1

IBUS_RX

MotorA_IN2

QTR2

Encoder1_ChA

Encoder1_ChB

I2C_SCL

+3.3V

+5V

+3.3V

+5V

R11

Resistance

20KΩ

Resistance

10KΩ

Resistance

20KΩ

R13

Resistance

20KΩ

Resistance

2 Ω

Resistance

10KΩ

Manufacturer Part Number

ESP32-DEVKIT-V1

Capacitance

100uF

J13

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Project Name

ESP32 Robot Controller | AI Design Review Tutorial [Example] 8q3M

Description

Spot the mistake! Learn how to use AI to conduct a design review on an ESP32-based control board. This project is ideal for autonomous or radio-controller robots featuring inputs for sensors, encoders, and a Flysky RC receiver, plus an I2C display for configuration.

Properties

Properties describe core aspects of the project.

Pricing & Availability

Distributor	Qty 1
Arrow	$11.47–$12.35
Digi-Key	$5.46–$5,832.18
LCSC	$3.31–$3.87
Mouser	$7.72–$7.93
Verical	$30.88–$31.88

Controls

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erhash / ESP32 Robot Controller | AI Design Review Tutorial [Example] 8q3M

Schematic