wireless-tag WT32-SC01 Development Board User Manual
- June 12, 2024
- Wireless Tag
Table of Contents
WT32-SC01
Datasheet Version 1.0
Copyright 2019
Overview
WT32-SC01 is a development board for visual touch screen. The board is equipped with self-developed firmware of GUI platform, it supports graphical drag-and-drop programming to help users complete the development of customized control platform. The WT32-SC01 development board master uses the ESP32-WROVER-B module, the module is a general-purpose Wi-Fi+BT+BLE MCU module, which is equipped with 4MB SPI Flash and 8MB PSRAM. The WT32-SC01 development board can also develop and debug buttons, voice, camera and other functions through the extended interfaces on both sides, which greatly shortens the development cycle of users.
Board Size
The following picture is a schematic diagram of the size of the WT32-SC01
development board. The size of the board is 58mmx91mm. Four feet of the board
are provided with positioning holes with a diameter of 4.05mm. 
Hardware Resources
The following is the physical diagram of the development board, and the
hardware resources of the development board are as follows:
Figure 2 is a physical view of the front of the development board, which
contains a 3.5inch LCD screen with a resolution of 320×480 and a capacitive
touchpad that supports two-point touch.
Figure 3 is a physical picture of the back of the development board, which
contains the following hardware resources:
1.ESP32-WROVER-B Module
ESP32-WROVER-B is a Wi-Fi+BT+BLE MCU module for all kinds of applications.
It has powerful functions and a wide range of applications. It can be used in
low-power sensor networks and demanding applications. Such as voice coding,
audio stream and MP3 decoding.
2.TP Interface
Capacitive touchpad interface, I2C interface, 0.5 spacing, 6 Pins.
3.LCM Display Interface
3.5 inch LCM display interface, SPI interface, 0.5 spacing, 24 pins. This SPI
interface is connected to the hardware HSPI interface of ESP32 and runs at up
to 80MHz.
4. Power Management
Two 3.3v LDOs, one to power the board itself and the other to power the
external extension board. The power supply is separated to prevent the
expansion board from interfering with the power supply of the ESP32, which
ensures the stability of the operation of the ESP32.
5.Power Switch
Power on/off control for the whole development board including extension board
interface.
6.RST Button
Touch the self-reset button to connect to the EN pin of the ESP32. This button
can be used for the reset of the ESP32.
7.Type-C Interface
General USB-C interface (Type-C interface), This interface is used for power
supply to the development board, UART communication and firmware download. The
hardware of the download circuit realizes data flow control, so the firmware
download supports the one-click automatic download.
8-9.Expansion Board Interface
The interface of external extension board can provide power supply,
communication and control of external extension board, so as to realize
functional expansion to meet various needs of users. The interfaces of 8 and 9
are connected by Pin to Pin, so the circuit connection of the expansion board
between interface 8 and 9 is the same, which only satisfies the user’s sense
of experience of installing the expansion board in different directions. At
the same time: when there is no conflict between the two extended versions of
the IO, two expansion boards can be inserted at the same time to achieve the
two expansion functions. Expansion board interface specification: 2.0 spacing,
2×20 Pins, can choose two side lay stick platoon mother installation. The
interface definition is shown in figure 4-Extended Interface Definition
Diagram.
10.Power Indicator
Power indicator, plug in the USB cable, turn on the 5 power switch and it will
light up.
11.UART Communication Indicator
The TXD indicator and RXD indicator in the UART will flash when there is a
data stream.
Power Supply Instruction
-
Power Supply
This development board only supports USB 5V power supply, when no other expansion board is inserted, it is recommended that the input voltage 5V support current not less than 1A, and when other expansion boards are inserted, it is recommended that the input voltage 5V support current not less than 2A(Specifically, we should also refer to the actual power consumption of the expansion card.). -
Note
Please first ensure that the FPC cable of the TP and LCM screens has been plugged into the corresponding FPC seat before powering up the development board, otherwise the TP and LCM screens may be damaged.
If the development board is abnormal, first test whether the voltage of the three TestPad points(Ther are PP5V, PP3V3_1 and PP3V3_2) on the board is normal.
PP3V3_1 output is to supply 3.3v power supply to this board, PP3V3_2 is to supply 3.3v power supply to external expansion board, PP5V is USB input 5V power supply and external expansion board is also supplied. Figure 5 is a schematic diagram of the power supply test point of the development board, test the three point-to-ground voltages respectively.
References
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