BiBoard V1 Guide

Introduction

Biboard V1 is a development board based on the high-performance ESP32 MINI 1 module. The module employs an Xtensa dual-core 32-bit LX6 processor featuring 4 MB of Flash memory, 2.4 GHz Wi-Fi, and Bluetooth Low Energy. With its powerful computing capabilities and diverse expansion interfaces, it can meet various projects' personalized needs and complex embedded development requirements. It is widely used in fields such as the Internet of Things, industrial automation, and education and research. Biboard V1 is the ideal choice for any embedded developer.

Feature

• Real-time high-load power supply

• High-speed UART debugging IC

• Flight Controller-Grade Six-Axis Motion Sensor

• 12-channel PWM servo interface

• Universal extensible interface (Grove socket)

• Stand-alone intelligent voice recognition with bilingual multi-word support

• High-fidelity audio speaker

• Zero-latency, high-sensitivity capacitive touch

• Strong EMC anti-interference and anti-radiation performance

Specifications

Specification	Details
Processor	ESP32-U4WDH
SRAM	520KB
ROM	448KB
Flash	4MB
External EEPROM	Customizable
Input Voltage	7 - 9V
Operating voltage	5V
Operating current	0.1 - 0.2A
Baud rate	115200
Bluetooth protocol	4.2 BR/EDR and low energy Bluetooth standard
Wi-Fi protocol	802.11b/g/n
Onboard Grove expansion socket	UART2, I2C, 4x Analog input
Raspberry Pi port	Support Raspberry Pi 3A+, 4, 5 (need to install a 5-pin socket)

Modules and functions

Part No.	Module & Function
1	Programmable LED [1]
2	DC-DC chip
3	12 x PWM servo socket
4	MPU6050 gyroscope
5	Voice command Module
6	External EEPROM [2]
7	Grove Sockets (G1: UART2; G2: I2C; G3: 2x Analog input; G4: 2x Analog input)
8	Speaker
9	2.54mm Battery Input
10	Raspberry Pi port
11	ESP32 Mini
12	CH343P serial chip
13	BOOT button [3]
14	Reset button
15	8.4V Power indicator (Yellow LED)
16	5V power indicator (Blue LED)
17	Touch pad socket

[1]. BiBoard V1 supports 12 PWM servos by default, but if you need to read the feedback angle of the 12th servo (Pin 27), please disconnect JP1. After that, LED27 cannot be used.

[2]. The newest firmware has implemented the external EEPROM's functionality with the built-in flash. You can purchase it elsewhere and solder it to the mainboard if needed. Model: M24C64-FMC6TG.

[3]. If the firmware burning process is interrupted due to external factors, it may lead to a situation where the firmware cannot be burned again. In this case, you need to power off the mainboard, press and hold the BOOT button, and then power on the mainboard again to force the ESP32 into Download mode. After the burning process is complete, power on the mainboard again.