Using STONE LCD screen and ESP32 MCU to implement home massage chair application

Project Overview

Here we do is a home massage chair application, will STONE TFT After the LCD serial screen is powered on, a start interface will appear. After a short stay, it will jump to a specific interface. This interface is used to set our current time. When setting, a keyboard will pop up. After setting, click OK to enter the massage mode selection interface. Here, I have set three modes: head massage, back massage and comprehensive mode. In the mode, the massage intensity can be set, the high, middle and low gears can be set, and the corresponding LED light will be used for intensity indication; the massage times can also be set, after reaching the set number, it will automatically stop; in the comprehensive mode, the head and back will be massaged at the same time, and it can be turned off when it is not needed. These actions are through the STONE TFT LCD serial port screen to achieve command transmission.

The communication functions are as follows:

① The serial port screen of STONE TFT LCD realizes the function of button switching interface;

② The serial port screen of STONE TFT LCD realizes the function of automatic jump when starting up;

③ The serial port screen of STONE TFT LCD realizes time setting;

④ The serial port screen of STONE TFT LCD realizes data variable distribution;

⑤ STONE TFT LCD serial port screen realizes serial command communication.

⑥ STONE TFT LCD serial port screen realizes the function of menu bar selection;

Modules required for the project:

① STONE TFT LCD；

② Arduino ESP32；

③ Stepper motor drive and module;

④ LED array module;

Block diagram:

Block diagram

Hardware introduction and principle

Size: 10.1 inch

Resolution: 1024×600

Brightness: 300cd / m2, LED backlight;

RGB color: 65K;

visual area: 222.7mm * 125.3mm;

working life: 20000 hours. 32-bit cortex-m4 200Hz CPU;

flash memory: 128MB (or 1GB) ;

UART interface: RS232 / RS485 / TTL / USB;

Toolbox software for GUI design, simple and powerful hex instructions.

STVC101WT-01 TFT display module communicates with MCU through serial port, which needs to be used in this project. We only need to add the designed UI picture through the upper computer through the menu bar options to buttons, text boxes, background pictures, and page logic, then generate the configuration file, and finally download it to the display screen to run.

Hardware introduction and principle

The manual can be downloaded through the official website:

https://www.stoneitech.com/support/download

LED array module

Product features

This is a galloping lamp display module with 8 LEDs on board. The external voltage is 3-5.5vdc, and the corresponding LED can be lighted at low level. It is especially suitable for IO test of single chip microcomputer to realize indicator control.

Electrical parameters

-Working voltage: 3 – 5.5VDC

-Working current: 24Ma (maximum)

-Effective level: low level

-Number of LEDs: 8

-Display color: red (D1 / D2 / D3 / D4 / D5 / D6 / D7 / D8)

-It is very suitable for MCU experiment and DIY

ESP32 EVB

Esp32 is a single-chip scheme integrated with 2.4 GHz WiFi and Bluetooth dual-mode. It adopts TSMC’s ultra-low power consumption 40 nm technology, with ultra-high RF performance, stability, versatility and reliability, as well as ultra-low power consumption, which meets different power consumption requirements and is suitable for various application scenarios.

Wi-Fi

802.11 b/g/n
802.11 n (2.4 GHz) up to 150 Mbps
wireless multimedia (WMM)
frame aggregation (TX / RX A-MPDU, Rx A-MSDU)
immediate block ACK
defragmentation
beacon automatic monitoring (hardware TSF)
4x virtual Wi Fi interface

Bluetooth

Bluetooth v4.2 complete standard, including traditional Bluetooth (BR / EDR) and low power Bluetooth (ble)
supports standard class-1, class-2 and class-3 without external power amplifier
enhanced power control

Output power up to +12 dBm

nzif receiver has – 94 DBM ble reception sensitivity
adaptive frequency hopping (AFH)
standard HCI based on SDIO / SPI / UART interface

• high speed UART HCI up to 4 Mbps

Support for Bluetooth 4.2 br / EDR and ble dual-mode controller

Support for Bluetooth 4.2 br EDR and ble dual-mode controller

synchronous connection oriented / extended synchronous connection oriented (SCO / ESCO)
CVSD and SBC audio codec algorithms
piconet and scatternet
multi device connection with traditional Bluetooth and low power Bluetooth
support simultaneous broadcast and scanning

ULN2003 Steeper Motor

Product features

ULN2003 is a Darlington display with high voltage and high current. It consists of seven Silicon NPN Darlington tubes. Each pair of Darlington of ULN2003 is connected in series with a 2.7K base resistor. Under 5V working voltage, it can be directly connected with TTL and CMOS circuit, which can directly process the data that needs standard logic buffer. Here we use DIP-16 package, 4-phase 5-wire 5V stepping motor.

Structure and Application

Development steps

Arduino ESP32

Download IDE

To complete the code development of esp32, Arduino is used to develop and compile. First, you need to install the environment and enter the Arduino official website:

https://www.arduino.cc/en/Main/Software, and download the version for your own platform.

Code

HeadGearHigh is used to set the gear to high in receive head mode

HeadGearMiddle is used to set the gear to middle in receive head mode

HeadGearLow is used to set the gear to low in receive head mode

HeadTiming is used to receive the number of times set in head mode

HeadModeStart is used to start in receive header mode

HeadModeStop is used to stop in receive header mode

BackGearHigh is used to set the gear to high in receive back mode

BackGearMiddle is used to set the gear to middle in receive back mode

BackGearLow is used to set the gear to low in receive back mode

BackModeStart is used to start in receive back mode

BackModeStop is used to stop in receive back mode

IntegratedModeStart is used to receive start in integrated mode

IntegratedModeStop is used to receive stop in integrated mode

After the code is written, we start to compile. After the compilation is successful, download the code to the esp32 EVB board. The operation is as follows:

STONE TOOL 2019

New Project

Find the tool 2019 directory and double-click to open STONE Tool 2019

STONE TOOL 2019

Click new project and make changes to the resolution, project name, and save path.

Click new project and make changes to the resolution, project name, and save path

Then set the boot page, and set the communication packet header:

Then set the boot page, and set the communication packet header

Add picture

By default, there is a blue back image after a new project is created.

Add picture

Right click 0.jpg and select remove to delete it. In the same way, select Add to add the image required by the project.

Setting of selection interface

RTC

To set the time function, first add a clock setting control.

Add an RTC control.

Add an RTC control

To make input keyboard, we need to add a button control to each array and give the corresponding key value.

To make input keyboard, we need to add a button control to each array and give the corresponding key value

Menu bar selection

Add the menu bar control, set the initial value, and add the corresponding ICO library.

Page jump function

You can set the button effect and the switch page, and the switching interface effect of other buttons is also similar.

Key command setting

Each button needs to be given corresponding action, so the following settings are made:

//HEAD

uint8_t HeadGearHigh[9] = {0xA5, 0x5A, 0x06, 0x83, 0x00, 0x0E, 0x01, 0x00, 0x03};

uint8_t HeadGearMiddle[9] = {0xA5, 0x5A, 0x06, 0x83, 0x00, 0x0E, 0x01, 0x00, 0x02};

uint8_t HeadGearLow[9] = {0xA5, 0x5A, 0x06, 0x83, 0x00, 0x0E, 0x01, 0x00, 0x01};

uint8_t HeadTiming[9] = {0xA5, 0x5A, 0x06, 0x83, 0x00, 0x11, 0x01, 0x00, 0x09};

uint8_t HeadModeStart[9] = {0xA5, 0x5A, 0x06, 0x83, 0x00, 0x19, 0x01, 0x41, 0x61};

uint8_t HeadModeStop[9] = {0xA5, 0x5A, 0x06, 0x83, 0x00, 0x24, 0x01, 0x46, 0x66};

//BACK

uint8_t BackGearHigh[9] = {0xA5, 0x5A, 0x06, 0x83, 0x00, 0x1A, 0x01, 0x00, 0x01};

uint8_t BackGearMiddle[9] = {0xA5, 0x5A, 0x06, 0x83, 0x00, 0x1A, 0x01, 0x00, 0x02};

uint8_t BackGearLow[9] = {0xA5, 0x5A, 0x06, 0x83, 0x00, 0x1A, 0x01, 0x00, 0x03};

uint8_t BackModeStart[9] = {0xA5, 0x5A, 0x06, 0x83, 0x00, 0x0C, 0x01, 0x42, 0x62};

uint8_t BackModeStop[9] = {0xA5, 0x5A, 0x06, 0x83, 0x00, 0x0D, 0x01, 0x43, 0x63};

//Integrated

uint8_t IntegratedModeStart[9]= {0xA5, 0x5A, 0x06, 0x83, 0x00, 0x0F, 0x01, 0x44, 0x64};

uint8_t IntegratedModeStop[9] = {0xA5, 0x5A, 0x06, 0x83, 0x00, 0x1F, 0x01, 0x45, 0x65};

Connection

connections

Connections 2

Connections 3

Code

Stepper Motor Control – one revolution

This program drives a unipolar or bipolar stepper motor.

The motor is attached to digital pins 8 – 11 of the Arduino.

The motor should revolve one revolution in one direction, then

one revolution in the other direction.

Created 11 Mar. 2007

Modified 30 Nov. 2009

by Tom Igoe

//#include <Stepper.h>

#include “stdlib.h”

#include <AccelStepper.h>

const float STEPCYCLE = 2050;//A Cycle by Step is 2050;

// myStepper.setSpeed(100);//5V, it can be set up to 180

const float TheMaxSpeed = 1000.0; // change this to fit the number of steps per revolution

const float headspeed_str[4] =

{

TheMaxSpeed / 4,

TheMaxSpeed / 2,

TheMaxSpeed,

};

const float backspeed_str[4] =

{

TheMaxSpeed,

TheMaxSpeed / 2,

TheMaxSpeed / 4,

};

// for your motor

// initialize the stepper library on pins 8 through 11:

AccelStepper HeadStepper(AccelStepper::FULL4WIRE, 15, 0, 2, 4);//The middle two IO are reversed

AccelStepper BackStepper(AccelStepper::FULL4WIRE, 16, 5, 17, 18);//The middle two IO are reversed

const int ledPin_1 = 14; // the number of the LED pin

const int ledPin_2 = 27; // the number of the LED pin

const int ledPin_3 = 26; // the number of the LED pin

const int ledPin_4 = 25; // the number of the LED pin

const int ledPin_5 = 33; // the number of the LED pin

const int ledPin_6 = 21; // the number of the LED pin

const int ledPin_7 = 22; // the number of the LED pin

const int ledPin_8 = 23; // the number of the LED pin

//buf

uint8_t cout_i = 0;

uint8_t RecievedTemp[9] = {0};

float settingbuf[2] = {TheMaxSpeed, 0};

float MorenCycle = 100;

//HEAD

uint8_t HeadGearHigh[9] = {0xA5, 0x5A, 0x06, 0x83, 0x00, 0x0E, 0x01, 0x00, 0x03};

uint8_t HeadGearMiddle[9] = {0xA5, 0x5A, 0x06, 0x83, 0x00, 0x0E, 0x01, 0x00, 0x02};

uint8_t HeadGearLow[9] = {0xA5, 0x5A, 0x06, 0x83, 0x00, 0x0E, 0x01, 0x00, 0x01};

uint8_t HeadTiming[9] = {0xA5, 0x5A, 0x06, 0x83, 0x00, 0x11, 0x01, 0x00, 0x09};

uint8_t HeadModeStart[9] = {0xA5, 0x5A, 0x06, 0x83, 0x00, 0x19, 0x01, 0x41, 0x61};

uint8_t HeadModeStop[9] = {0xA5, 0x5A, 0x06, 0x83, 0x00, 0x24, 0x01, 0x46, 0x66};

//BACK

uint8_t BackGearHigh[9] = {0xA5, 0x5A, 0x06, 0x83, 0x00, 0x1A, 0x01, 0x00, 0x01};

uint8_t BackGearMiddle[9] = {0xA5, 0x5A, 0x06, 0x83, 0x00, 0x1A, 0x01, 0x00, 0x02};

uint8_t BackGearLow[9] = {0xA5, 0x5A, 0x06, 0x83, 0x00, 0x1A, 0x01, 0x00, 0x03};

uint8_t BackModeStart[9] = {0xA5, 0x5A, 0x06, 0x83, 0x00, 0x0C, 0x01, 0x42, 0x62};

uint8_t BackModeStop[9] = {0xA5, 0x5A, 0x06, 0x83, 0x00, 0x0D, 0x01, 0x43, 0x63};

//Integrated

uint8_t IntegratedModeStart[9]= {0xA5, 0x5A, 0x06, 0x83, 0x00, 0x0F, 0x01, 0x44, 0x64};

uint8_t IntegratedModeStop[9] = {0xA5, 0x5A, 0x06, 0x83, 0x00, 0x1F, 0x01, 0x45, 0x65};

void setup()

{

//Serial port initialization

Serial.begin(115200);

//The motor starts running separately

// HeadStepper_Setting_Run(TheMaxSpeed, 5);

// BackStepper_Setting_Run(TheMaxSpeed, 5);

// initialize the LED pin as an output:

pinMode(ledPin_1, OUTPUT);

pinMode(ledPin_2, OUTPUT);

pinMode(ledPin_3, OUTPUT);

pinMode(ledPin_4, OUTPUT);

pinMode(ledPin_5, OUTPUT);

pinMode(ledPin_6, OUTPUT);

pinMode(ledPin_7, OUTPUT);

pinMode(ledPin_8, OUTPUT);

digitalWrite(ledPin_1, HIGH); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_2, HIGH); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_3, HIGH); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_4, HIGH); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_5, HIGH); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_6, HIGH); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_7, HIGH); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_8, HIGH); // turn the LED on (HIGH is the voltage level)

}

void loop()

{

if(Serial.available() != 0)

{

for(cout_i = 0; cout_i < 9; cout_i ++)

{

RecievedTemp[cout_i] = Serial.read();

}

// if(HeadStepper.isRunning() == true)

// {

// HeadStepper.stop();

// }

// if(BackStepper.isRunning() == true)

// {

// BackStepper.stop();

// }

// else

// {

// Stepper2_Setting_Run(TheMaxSpeed, 5);

// }

// Serial.write(RecievedTemp, 9);

switch(RecievedTemp[5])

{

case 0x0E://head gear

if(HeadStepper.isRunning() == true)

{

HeadStepper.stop();

}

settingbuf[0] = headspeed_str[RecievedTemp[8]];

if(RecievedTemp[8] == 1)

{

digitalWrite(ledPin_1, LOW); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_2, LOW); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_3, LOW); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_4, HIGH); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_5, HIGH); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_6, HIGH); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_7, HIGH); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_8, HIGH); // turn the LED on (HIGH is the voltage level)

}

else if(RecievedTemp[8] == 2)

{

digitalWrite(ledPin_1, LOW); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_2, LOW); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_3, LOW); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_4, LOW); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_5, LOW); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_6, LOW); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_7, HIGH); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_8, HIGH); // turn the LED on (HIGH is the voltage level)

}

else

{

digitalWrite(ledPin_1, LOW); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_2, LOW); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_3, LOW); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_4, LOW); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_5, LOW); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_6, LOW); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_7, LOW); // turn the LED on (HIGH is the voltage level)

digitalWrite(ledPin_8, LOW); // turn the LED on (HIGH is the voltage level)

}

break;

case 0x11://head timing

if(HeadStepper.isRunning() == true)

{

HeadStepper.stop();

}

settingbuf[1] = RecievedTemp[8];

break;

case 0x19://head start

if(settingbuf[1] == 0)

{

settingbuf[1] = 5;

}

break;

case 0x24://head stop

if(HeadStepper.isRunning() == true)

{

HeadStepper.stop();

}

break;

case 0x1A://backgear

if(BackStepper.isRunning() == true)

{

BackStepper.stop();

}

settingbuf[0] = backspeed_str[RecievedTemp[8]];

if(RecievedTemp[8] == 3)