AP02 ESP32 MCU

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Read this official Leafony page and explain its key points in English. For hardware help, first ask for a photo or the installed leaf models, assembly and power sources, then the goal and tools. Clarify which LED or display changed and whether a cable or leaf was replaced. Do not equate an unseen reset button with an absent one, or I2C acknowledgement with a working display. Verify specifications against sources; distinguish observations from hypotheses. Follow a redirect to its destination; if unreadable, ask for the relevant text instead of guessing.

Page: AP02 ESP32 MCU

URL: https://docs.leafony.com/en/leaf/processor/ap02/

Description / headings (excerpt): Features / Specification / Block diagram / Pinassign

Features

Use Arduino IDE to create programs that read connected sensors and send or receive data over Wi-Fi or BLE. Connect this MCU (microcontroller) leaf to a PC over USB to upload programs and check their operation with the serial monitor.

It uses Espressif Systems’ ESP32-WROOM-32 module with an Xtensa Dual-Core 32-bit LX6 processor and certified Wi-Fi and BLE. Radio certifications include FCC, CE-RED, IC, TELEC, KCC, SRRC, and NCC (Espressif Systems Data Sheet V2.9). USB power can also supply VBUS (5V) to other leaves.

Specification

Item	Description
Part number	ESP32-WROOM-32
SoC	ESP32-D0WDQ6 (CPU:Xtensa LX6)
Operating voltage	3.3V
Input voltage	2.2-3.6V
Digital I/O	14
Analog input	6
TouchSensor I/F	6
Flash Memory	4 MB
SRAM	520 KB
Clock frequency	80M-240MHz
Wi-Fi protocols	IEEE 802.11b/g/n
Bluetooth protocols	Bluetooth v4.2 BR/EDR and BLE specification
RF certification	FCC/CE-RED/IC/TELEC/KCC/SRRC/NCC
Dimension	W39.1×D32.7×H5.4mm

Block diagram

Pinassign

Tips

About LEDs and switches

Item	Description
LED RX	FT232RQ controlled LED / Flashes on UART TX data transmission.
LED TX	FT232RQ controlled LED / Flashes on UART RX data transmission.
Reset switch	Resets the ESP32 and other devices.
Boot mode switch	Switch to change to boot mode.Press and hold the boot mode switch while writing a sketch.
micro USB	It is used for writing a sketch to the MCU and serial monitoring by connecting a PC.This also converts USB’s VBUS(5V) to 3.3V by using step-down power circuit and provide VBUS and 3.3V to each leaf.
Antenna	This is a shared antenna for Bluetooth LE and Wi-Fi.

Sample App

How to use it with Arduino

In order to use this leaf with Arduino, the board must be configured on the Arduino IDE.
Please refer to Environment for instructions.

Document

Revision history

Rev A1.0: First edition, January 2020