Wireless-tag WT-ESP32-DEVKITC V4 User manual

WT-
ESP32
1
ESP32
-
DEVKITC V4
Version 1.1.0
Release Dat
e: Jun.17
DEVKITC V4
Version 1.1.0
e: Jun.17
，2020

Disclaimer and Copyright Notice
I
nformation in this paper, including
prior notice.
T
his document is provided
warranty of merchantability
or any warranty otherwise arising out of any propo
liability, including liability for infringement of any patent rights
use of information in this document is disclaimed.
implied, by estoppel
or otherwise, to any intellectual pro
herein.
All trade names, trademarks and registered trademarks mentioned in this document
are property of their respective owners, and are hereby acknowledged.
www.wireless-tag.cn WT-ESP32-
DEVKITC V4
2
Disclaimer and Copyright Notice
nformation in this paper, including
URL references,
is subject to change without
his document is provided
“as is”
with no warranties whatsoever, including any
warranty of merchantability
, non-
infringement, fitness for any particular purpose,
or any warranty otherwise arising out of any proposal, specification or sample
liability, including liability for infringement of any patent rights
use of information in this document is disclaimed.
No licenses
, either
or otherwise, to any intellectual property rights
All trade names, trademarks and registered trademarks mentioned in this document
are property of their respective owners, and are hereby acknowledged.
DEVKITC V4
is subject to change without
with no warranties whatsoever, including any
infringement, fitness for any particular purpose,
sal, specification or sample
. All
liability, including liability for infringement of any patent rights
， relating to
, either
express or
perty rights
are granted
All trade names, trademarks and registered trademarks mentioned in this document
are property of their respective owners, and are hereby acknowledged.

Version Author
Reviewer
1.1.0 YANG
www.wireless-tag.cn WT-ESP32-
DEVKITC V4
3
Revision History
Reviewer
Date Notes
Jun.16，2020
First release
DEVKITC V4

1. Product Overviews
................................
2. Main Features
................................
3.
Functional Descriptions
4. Power Options
................................
5. Application Development
6. Development Board Size
7. Contact Us
................................
www.wireless-tag.cn WT-ESP32-
DEVKITC V4
4
Contents
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Functional Descriptions
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5. Application Development
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6. Development Board Size
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DEVKITC V4
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1. Product Overviews
WT-ESP32-
DevKitC V4 is a small development board based on ESP32, which
integrates the WIFI+Bluetooth solution. Most pins of the modules
have been led out. Developers can easily connect a variety of peripheral devices
through jumpers or insert the development board directly into the breadboard
according to their actual needs.
In order to better meet the needs of different user
supports the following different configurations
Optional multiple ESP32 modules
● ESP32-WROOM-32 m
odule
● ESP32-WROOM-32D
● ESP32-WROOM-32U
● ESP32-SOLO-1 m
odule
● ESP32-WROVER
● ESP32-WROVER-B
● ESP32-WROVER-I
www.wireless-tag.cn WT-ESP32-
DEVKITC V4
5
DevKitC V4 is a small development board based on ESP32, which
integrates the WIFI+Bluetooth solution. Most pins of the modules
have been led out. Developers can easily connect a variety of peripheral devices
through jumpers or insert the development board directly into the breadboard
according to their actual needs.
In order to better meet the needs of different user
s, WT-ESP32-
DevKitC V4 also
supports the following different configurations
:
Optional multiple ESP32 modules
odule
odule
DEVKITC V4
DevKitC V4 is a small development board based on ESP32, which
integrates the WIFI+Bluetooth solution. Most pins of the modules
on the board
have been led out. Developers can easily connect a variety of peripheral devices
through jumpers or insert the development board directly into the breadboard
DevKitC V4 also

● ESP32-WROVER-
I (IPEX)
◊ Optional pin header
or female header
2. Main Features
❊ Small size, big use
The product is completely upgraded. WT
board that can be
equipped with ESP32
ESP32-WROVER-
B and ESP32
into a breadboard.
❊ Novel and powerful
WT-ESP32-
DevKitC V4 supports WIFI+Bluetooth functions, and has rich peripherals,
which can all
ow developers to use their imagination for secondary development.
❊
Easy development and short time
The RF performance of WT
so users do not need to consider RF and antenna design when designing an
developing applications. This development board contains the small system that
the user needs, and only needs to connect USB cable to carry on the development.
❊
Flexible and rich features
WT-ESP32-
DevKitC V4 has a complete circuit supporting ESP32
ESP32-WROOM-
32U, ESP32
converter, reset and download mode buttons, LDO Voltage regulator and micro
USB connector. Each GPIO is available to developers.
www.wireless-tag.cn WT-ESP32-
DEVKITC V4
6
I (IPEX)
or female header
The product is completely upgraded. WT
-ESP32-
DevKitC V4 is a mini development
equipped with ESP32
-WROOM-32D, ESP32
-
B and ESP32
-SOLO-
1 series modules, and can be easily plugged
DevKitC V4 supports WIFI+Bluetooth functions, and has rich peripherals,
ow developers to use their imagination for secondary development.
Easy development and short time
-consuming
The RF performance of WT
-ESP32-
DevKitC V4 has been debugged and improved,
so users do not need to consider RF and antenna design when designing an
developing applications. This development board contains the small system that
the user needs, and only needs to connect USB cable to carry on the development.
Flexible and rich features
DevKitC V4 has a complete circuit supporting ESP32-
32U, ESP32
-WROVER-B, and ESP32-SOLO-
1, including USB
converter, reset and download mode buttons, LDO Voltage regulator and micro
USB connector. Each GPIO is available to developers.
DEVKITC V4
DevKitC V4 is a mini development
-
WROOM-32U,
1 series modules, and can be easily plugged
DevKitC V4 supports WIFI+Bluetooth functions, and has rich peripherals,
ow developers to use their imagination for secondary development.
DevKitC V4 has been debugged and improved,
so users do not need to consider RF and antenna design when designing an
d
developing applications. This development board contains the small system that
the user needs, and only needs to connect USB cable to carry on the development.
-
WROOM-32D,
1, including USB
-UART
converter, reset and download mode buttons, LDO Voltage regulator and micro

❊
Easy to plug into a breadboard
WT-ESP32-DevKitC V4
, of which pin layout has been
plugged into the breadboard for development and debugging. The on
is led out to
supply power for external components. Different peripheral interfaces
are grouped to achieve barrier
3.
Functional Descriptions
WT-ESP32-DevKitC V4（
on
Main components
ESP32-WROOM-32
EN
Boot
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DEVKITC V4
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Easy to plug into a breadboard
, of which pin layout has been
optimized, can be easily
plugged into the breadboard for development and debugging. The on
supply power for external components. Different peripheral interfaces
are grouped to achieve barrier
-free development.
Functional Descriptions
on
-board ESP32-WROOM-32）
Basic introductions
Based on ESP32 module, for more details, please refer
to ( ESP32-WROOM-
32 technical specification
Reset button
Download button. Press and hold the
Boot
press the EN button (do not release the
Boot
DEVKITC V4
optimized, can be easily
plugged into the breadboard for development and debugging. The on
-board LDO
supply power for external components. Different peripheral interfaces
Based on ESP32 module, for more details, please refer
32 technical specification
)
Boot
button and
Boot
button at

USB-to-UART bridge
| Single
chip, USB-
UART bridge, up to
3 Mbps transmission rate
USB interface
5V Power On LED
I/O
※ Note
Pins D0, D1, D2, D3, CMD and CLK are used for internal communication between
the ESP32 chip and the SPI flash, and are concentrated on the
development board near the USB port. Generally speaking, these pins
not connected, otherwise it may affect the operation of SPI flash / SPI RAM.
www.wireless-tag.cn WT-ESP32-
DEVKITC V4
8
this time) to enter the "firmware download" mode.
Download the firmware through the serial port.
| Single
UART bridge, up to
Micro USB port
used as a power supply for the circuit board, or a
communication interface between the PC and the
ESP32-WROOM-32 module
When the development
board is powered up (USB or
external 5V), the indicator will light up. For more
information, see the schematic in the relevant
documentation.
Most pins of the module on board have been led to the
pin header of the development board. Users can
program
ESP32 to realize PWM, ADC, DAC, I2C, I2S, SPI
and other functions
Pins D0, D1, D2, D3, CMD and CLK are used for internal communication between
the ESP32 chip and the SPI flash, and are concentrated on the both
development board near the USB port. Generally speaking, these pins
not connected, otherwise it may affect the operation of SPI flash / SPI RAM.
DEVKITC V4
this time) to enter the "firmware download" mode.
Download the firmware through the serial port.
used as a power supply for the circuit board, or a
communication interface between the PC and the
board is powered up (USB or
external 5V), the indicator will light up. For more
information, see the schematic in the relevant
Most pins of the module on board have been led to the
pin header of the development board. Users can
ESP32 to realize PWM, ADC, DAC, I2C, I2S, SPI
Pins D0, D1, D2, D3, CMD and CLK are used for internal communication between
both
sides of the
development board near the USB port. Generally speaking, these pins
are better
not connected, otherwise it may affect the operation of SPI flash / SPI RAM.

4. Power Options
The development
board can choose one of the following three power supply
modes:
Micro USB power supply (
5V / GND Pin power suppl
3V3 / GND Pin power suppl
5.
Application Development
Before powering on ESP32
board is intact.
Now, go to the
Installation Step by Step
the development environment and try to burn the sample
development board.
※ Note
Pins GPIO16 and GPIO17 are only applicable to the on
series and ESP32-
SOLO
┋Warning
The above power supply modes cannot be connected at the same time,
otherwise the
development board and/or power supply may be damaged
www.wireless-tag.cn WT-ESP32-
DEVKITC V4
9
board can choose one of the following three power supply
Micro USB power supply (
default )
5V / GND Pin power suppl
y
3V3 / GND Pin power suppl
y
Application Development
Before powering on ESP32
-
DevKitC V4, please make sure that the development
Installation Step by Step
chapter in Get Started
to see how to set up
the development environment and try to burn the sample project to your
Pins GPIO16 and GPIO17 are only applicable to the on
-
board ESP32
SOLO
-
1 development boards, reserved for internal use.
The above power supply modes cannot be connected at the same time,
development board and/or power supply may be damaged
DEVKITC V4
board can choose one of the following three power supply
DevKitC V4, please make sure that the development
to see how to set up
project to your
board ESP32
-WROOM
1 development boards, reserved for internal use.
The above power supply modes cannot be connected at the same time,
development board and/or power supply may be damaged
.

6.
Development Board Size
7. Contact Us
Wireless-
Tag Technology Co., Ltd.
Address: Room 115-
118, Building A, Chengshishanhai
Center, No.11 Zhongxing Road
Longgang District, Shenzhen, Guangdong
Postcode：511700
TEL: [phone]
URL: www.wireless-
tag.cn
www.wireless-tag.cn WT-ESP32-
DEVKITC V4
10
Development Board Size
Tag Technology Co., Ltd.
118, Building A, Chengshishanhai
Center, No.11 Zhongxing Road
，Bantian Sub-District,
Longgang District, Shenzhen, Guangdong
tag.cn
DEVKITC V4