LTS5 LoRa HMI Touch Screen

LTS5 is a (% style="color:blue" %)LoRa / LoRaWAN HMI Touch Screen(%%) designed for display purpose of IoT project. It have a 5.0" HMI touch screen, and support WiFi, Bluetooch, LoRa wireless protocol.

22

23

LTS5 is an Open Source software project. The MCU is ESP32 and Dragino LA66 LoRa module. There are lots of development source for ESP32 which can greatly reduce the development time.

24

25

The HMI touch screen of LTS5 supports drap & drop design. Developer can use SquareLine to easily customize the display UI for different application.

26

27

LTS5 use LA66 LoRa module, this module can be program to support private LoRa protocol or LoRaWAN protocol.

== 1.2 Features ==

* ESP32-WROOM MCU + Dragino LA66 LoRa Module

33

* Support Private LoRa protocol or LoRaWAN protocol

34

* Support WiFi & BLE wireless protocol

35

* 5.0" HMI touch screen

36

* Support LVGL case. SquareLine program.

37

* Support RS485 Interface

38

* Open Source Project

* Wall Attachable.

* 5V DC power

* IP Rating: IP52

== 1.3 Specification ==

**LoRa**:

**WiFi:**

* 802.11b/g/n

* Up to 150 Mbps data rate in 802.11n mode

52

* Support A-MPDU and A-MSDU aggregation

53

* zero point four μ S protection interval

54

* Working channel center frequency range: 2412~~2484 MHz

**Bluetooth:**

* Bluetooth V4.2 BR/EDR and Bluetooth LE standard

59

* Class-1, Class-2, and Class-3 transmitters.

* AFH

* CVSD and SBC

**Display:**

* 5.0 Inch , 800 x 480

66

* IPS Capacitive Touch SCreen

67

* RGB color.

68

* Display Area: 120.7*75.80 mm

69

70

== 1.4 Power Consumption ==

71

72

* External 5V DC power adapter

73

74

== 1.5 Storage & Operation Temperature ==

75

76

* Operation Temperature: -20 ~~ 70°C (No Dew)

77

* Storage Temperature: -30 ~~ 70°C (No Dew)

78

79

== 1.6 Applications ==

80

81

* Smart Buildings & Home Automation

82

* Logistics and Supply Chain Management

* Smart Metering

* Smart Agriculture

* Smart Cities

* Smart Factory

= 2. Getting Started with Hello World =

89

90

== 2.1 About this demo ==

91

92

In this Getting Started Example, we will show how to design a simple Display UI and upload it to LTS5. This UI has a button , when user click the button. The Web UI will jump to a new page.

93

94

== 2.2 Install Software Running Environment ==

95

96

The ESP MCU can be developed using ESP-IDF, Arduino, or MicroPython. For this project, we utilize ESP-IDF for compilation and Visual Studio Code (VSCode) for editing.

97

98

=== 2.2.1 Install VSCode and ESP-IDF extension ===

99

100

Firstly, download and install VSCode for your computer's operating system from the official website: [[Download Visual Studio Code - Mac, Linux, Windows>>url:https://code.visualstudio.com/download]].

101

102

Next, you need to install the ESP-IDF extension within VSCode. The detailed operation steps are illustrated in image 1.

103

104

105

[[image:image-20240928110211-5.png||height="508" width="866"]]

106

107

image 1 ESP-IDF extension install

108

109

Links for reference: [[Install ESP32 ESP-IDF on Windows and Integrate with VS code (esp32tutorials.com)>>url:https://esp32tutorials.com/install-esp32-esp-idf-windows-integrate-vs-code/#:~~:text=In%20this%20tutorial,%20we%20will%20show%20you%20how%20to%20install]]

110

111

=== 2.2.2 Install SquareLine Studio ===

112

113

The version we are utilizing for this software is 1.4.2. You can download it from the official link: [[SquareLine Studio - Download the current version of SquareLine Studio>>url:https://squareline.io/downloads#lastRelease]].

114

115

Please note that this software necessitates the registration of a license prior to usage, and various licenses come with distinct limitations. For instance, the free version imposes restrictions such as a limit of 1 component, 150 widgets, and 10 screens. However, for first-time downloads, you are granted unrestricted access for a period of 30 days without the need for immediate registration.

116

117

== 2.3 Simple usage of SquareLine Studio and export UI code ==

118

119

After launching and logging in to this software, create a project as shown in the following image 2. The version of LVGL is 8.3.11.

120

121

122

[[image:image-20240928103357-2.png||height="680" width="708"]]

123

124

image 2 create a SquareLine project

125

126

Next, we need to make some settings for this project. By clicking in the specified order on image 3, we can see the page as shown in image 4.

127

128

[[image:1727229582471-566.png]]

129

130

image 3 project settings

131

132

133

[[image:image-20240928105309-4.png||height="526" width="556"]]

134

135

image 4 modify project settings

136

137

Now we can start to use this software. Here are some usage information for this software.

**1.add widget**

To add a widget, you should click a widget you want to add at the area entitled “Widgets”. In image , demonstrate a add process of label, button, and image 5.

142

143

[[image:image-20240928111412-6.png||height="526" width="864"]]

image 5 add widgets

**2.modify widget**

The area for modifying widgets is called "Inspector". There are four parts in the "Inspector" tab. We use three of them more frequently, excluding "COMPONENT". The second part is aimed at adjusting the layout, size, position, alignment, flags, and states, etc. of widgets. The name of the second part indicates the type of widget it is representing, and in image 6, it is "BUTTON".

151

152

[[image:1727485118799-984.png]]

153

154

image 6 the button widget's "Inspector" tab

155

156

Second part: "Layout" means a auto position-management for widgets contained in the parent widget. "Transform" includes size, position and align modification.

157

158

[[image:1727485251053-655.png]]

159

160

image 7 the button widget's "BUTTON" tab

161

162

Third part: It is an area of style setting.

163

164

Fourth part: It is an area for adding events. In image 8, it is adding a click event to a button. If the button is clicked after the click event is added, the current screen will fade into another specified screen, and the switching process will last 500ms.

165

166

[[image:1727485480434-713.png||height="395" width="290"]]

image 8 add event for button

171

172

**3.change label widget content**

173

174

Modify the content in text, the text content of label widget will be changed accordingly.

175

176

[[image:image-20240928090825-1.png||height="327" width="391"]]

177

178

image 9 modify text content of label widget

179

180

**4.Add image into project**

181

182

To use the image widget, you should first add an image to your project. The image format must be PNG, and its resolution should not exceed 800x480 pixels. There are two ways to add an image file. One way is to move your image into the folder "…/squareline project/assets/", as shown in image 10. The other way is to click the "ADD FILE INTO ASSETS" button, then select an image from your computer to import. After adding, you can see the image in the "assets" area in SquareLine Studio, as demonstrated in image 11.

183

184

[[image:image-20240928113424-9.png||height="355" width="505"]]

185

186

image 10 add image file into SquareLine Studio project

187

188

[[image:image-20240928114139-10.png||height="559" width="810"]]

189

190

image 11 use image widget in SquareLine Studio

191

192

**5.The relationship between widgets**

193

194

There are two common relationships between widgets: one is parallel, the other is parent-child. The parallel relationship means that widgets' relative position is based on a collective object of reference. In parent-child relationship, the parts of the child object that are outside the boundaries of the parent object are not visible by default. Therefore, we need to adjust the position of the child object so that it falls within the range of the parent object, allowing it to be seen as illustrated in image 13.

195

196

[[image:1727486567182-334.png||height="318" width="278"]]

197

198

image 12 move label1 to make label1 widget be a child of button1 widget(1)

199

200

[[image:image-20240928112001-8.png||height="431" width="796"]]

201

202

image 13 move label1 to make label1 widget be a child of button1 widget(2)

203

204

**6.Preview the final effect**

205

206

An advantage of this kind of software is that you can edit the UI with quick previews. In other words, it provides a way of combining graphical programming with simulation immediately.

207

208

[[image:1727487368023-281.png]]

209

210

image 14 click on the triangle icon to start or end the simulation

211

212

For more detailed usage, please visit the official link: [[SquareLine Studio 1.4.2 Documentation ~| SquareLine Studio>>url:https://docs.squareline.io/docs/squareline/]].

213

214

215

== 2.4 Integrate UI Code to ESP-IDF Project ==

216

217

To achieve the integrating, we first need to export the UI code, then make some modifications, and finally relocate the UI code to a specific position within the project.

218

219

[[image:1727229798126-306.png]]

220

221

image 15 export UI file

222

223

[[image:1727229821582-258.png||height="333" width="662"]]

224

225

image 16 exported UI file

226

227

Create a empty directory entitled "ui" in path "basic_prj/app_components/ui/", and then copy all UI code exported to this directory.

228

229

[[image:1727229845835-509.png||height="165" width="582"]]

230

231

image 17 open CMakeLists.txt

232

233

[[image:1727229892636-154.png||height="521" width="407"]]

234

235

image 18 modify CMakeLists.txt

236

237

The last step of integrating is adding two lines of code in main.c file.

238

239

[[image:1727229926561-300.png]]

image 19 add "ui.h"

[[image:1727229955611-607.png]]

244

245

image 20 add "ui_init()"

246

247

== 2.5 Brief introduction of hello world project ==

248

249

The project consists of two screens. The first screen displays the company's logo, the project name, and a button to navigate to the next screen. The second screen presents some information about this HMI screen product through an image and includes a button to return to the previous screen.

250

251

(% class="wikigeneratedid" %)

252

== 2.6 Test Result ==

253

254

By pressing the button lying bottom right, the screen can switch to another as expected. This indicates that the UI file has been successfully integrated into the project and is now effective.

255

256

[[image:1727488067077-684.png||height="402" width="574"]]

image 21 screen1

[[image:1727488157579-949.png||height="397" width="572"]]

image 22 screen2

= 3. Example Project 1: LoRa Central Display =

265

266

[[image:image-20240916101737-1.png||height="468" width="683"]]

= 4. Example Project 2: LoRaWAN RS485 Alarm =

= 6. FAQ =

== 6.1 ==

= 7. Order Info =

== 7.1 Part Number ==

281

282

Part Number: (% style="color:#4472c4" %)LTS5

283

284

285

== 7.2 Packing Info ==

286

287

**Package Includes**:

288

289

* LTS5 HMI Touch Screen

290

* 5V,2A DC Power Adapter.

291

* USB Type C Program Cable

= 8. Support =

* Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.

296

* Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]].

297

298

= 9. Reference material =

* Datasheet

* Source Code

* Mechinical