🌟LilyGO T-A76XX🌟

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The TinyGSM used in the example is a fork to support A7670,A7608,SIM7672G,SIM7670G, If you use the master branch, the compilation will not go smoothly
A7670G/A7670E/A7670SA are collectively referred to as A7670X
A7608SA-H/A7608E-H,A7608E,A7608SA are collectively referred to as A7608X
SIM7672G and SIM7670G are exactly the same, except for the name change , The readme file indicates these two models with SIM767X

1️⃣Product

Product(PinMap)	SOC	Flash	PSRAM	Schematic
T-A7670X	ESP32-WROVER-E	4MB	8MB(QSPI)	schematic
T-Call-A7670X	ESP32-WROVER-E	4MB	8MB(QSPI)	schematic
T-A7608	ESP32-WROVER-E	4MB	8MB(QSPI)	schematic
T-A7608-DC-S3	ESP32-S3-WROOM-1	16MB	8MB(OPI)	schematic
T-A7608-S3	ESP32-S3-WROOM-1	16MB	8MB(OPI)	schematic
T-SIM767XG-S3	ESP32-S3-WROOM-1	16MB	8MB(OPI)	schematic

2️⃣Examples

Example	T-A7670X	T-Call-A7670X	T-SIM767XG-S3	T-A7608	T-A7608-DC-S3	T-A7608-S3
ATdebug	✅	✅	✅	✅	✅	✅
Blynk_Console	✅	✅	✅	✅	✅	✅
GPSShield	✅ (Only T-A7670G)	❌ (Can't run)	❌ (Can't run)	❌ (Can't run)	❌ (Can't run)	❌ (Can't run)
GPS_BuiltIn	✅	✅	✅	✅	✅	✅
GPS_NMEA_Parse	✅	✅	✅	✅	✅	✅
HttpClient	✅	✅	✅	✅	✅	✅
HttpsClient	✅	✅	✅	✅	✅	✅
MqttClient	✅	✅	✅	✅	✅	✅
ReadBattery	✅	❌ (Can't run)	✅	✅	❌ (Can't run)	✅
DeepSleep	✅	✅	✅	✅	✅	✅
ModemSleep	✅	✅	✅	✅	✅	✅
VoiceCalls	✅	✅	❌ (No support)	✅	✅	✅
SDCard	✅	❌ (Can't run)	✅	✅	✅	✅
SerialRS485	✅	✅	✅	✅	✅	✅
SendSMS	✅	✅	❌ (No support)	✅	✅	✅
LBSExample	✅	✅	❌ (No support)	✅	✅	✅
Network	✅	✅	✅	✅	✅	✅
MqttsBuiltlnAuth	✅	✅	✅	✅	✅	✅
MqttsBuiltlnSSL	✅	✅	✅	✅	✅	✅
MqttsBuiltlnAWS	✅	✅	✅	✅	✅	✅
MqttsBuiltlnHivemq	✅	✅	✅	✅	✅	✅
MqttsBuiltlnEMQX	✅	✅	✅	✅	✅	✅
HttpsBuiltlnGet	✅	✅	✅	✅	✅	✅
HttpsBuiltlnPost	✅	✅	✅	✅	✅	✅
HttpsOTAUpgrade	✅	✅	✅	✅	✅	✅
HP303BSensor*	✅	✅	✅	✅	✅	✅
SPIExample*	✅	✅	✅	✅	✅	✅

HP303BSensor,SPIExample it only demonstrates how to define and use SPI and I2C. Please confirm the pin connection and IO definition before use.

Quick start ⚡

3️⃣ PlatformIO Quick Start (Recommended)

For users using the ESP32 version (non ESP32S3 version), please install the CH9102 USB bridge driver for the first time.
- Windonws
- Mac OS
Install Visual Studio Code and Python
Search for the PlatformIO plugin in the VisualStudioCode extension and install it.
After the installation is complete, you need to restart VisualStudioCode
After restarting VisualStudioCode, select File in the upper left corner of VisualStudioCode -> Open Folder -> select the LilyGO-T-A76XX directory
Wait for the installation of third-party dependent libraries to complete
Click on the platformio.ini file, and in the platformio column
Select the board name you want to use in default_envs and uncomment it.
Uncomment one of the lines src_dir = xxxx to make sure only one line works
Click the (✔) symbol in the lower left corner to compile
Connect the board to the computer USB
Click (→) to upload firmware
Click (plug symbol) to monitor serial output
If it cannot be written, or the USB device keeps flashing, please check the FAQ below

4️⃣ Arduino IDE Quick Start

It is recommended to use platformio without cumbersome steps

For users using the ESP32 version (non ESP32S3 version), please install the CH9102 USB bridge driver for the first time.
- Windonws
- Mac OS
Install Arduino IDE
Install Arduino ESP32 2.0.5 or above
Copy all folders in lib folder to Arduino library folder (e.g. C:\Users\YourName\Documents\Arduino\libraries)
Open ArduinoIDE ,Tools , Look at the picture to choose

T-A7670X/T-Call-A7670X/T-A7608 T-A7608-DC-S3/T-A7608-DC-S3/T-A7608-S3/T-SIM767XG-S3
LilyGO-T-A76XX folder -> examples -> Choose the appropriate example from the list above
Open the corresponding board macro definition above utilities.h
Select Port
Click upload , Wait for compilation and writing to complete
If it cannot be written, or the USB device keeps flashing, please check the FAQ below

Writing as a beginner

When opening the Arduino IDE, you will be prompted that there are new libraries that can be updated. Please do not click update. There is no guarantee that it can be compiled, run, etc. after the update. Make sure that the board is running normally before deciding whether to update. You have to Know that problems may occur after updating due to library differences, or the default configuration (such as TinyGSM) will be overwritten.
If it runs abnormally after the update, please follow Article 4 of the Arduino Quick Start to delete the directory in libraries, and drag the folder in lib into the libraries directory again.

5️⃣ Notes for new Users <T-A7670X/T-A7608X>

The A7670G does not have a built-in GPS modem, regardless of whether the motherboard contains a GPS connector.

The following does not apply to T-Call-A7670

Pin VIN is a USB input, if a battery is being used to power the device there will be no voltage output from VIN meaning 3.3v is the only power output.
When using the built-in battery pack the on/off switch will function as normal, supplying/cutting off power to the board, However, if an external battery pack is used and attached to the VBAT pin the on/off switch will be bypassed meaning the only way to shut off will be to disconnect the batteries.
On/off switch is for battery use only, it will not function when plugged into USB.
Recommended solar panels are 4.4v to 6v DO NOT EXCEED OR BOARD MAY BE DAMAGED
When an SD card in you can not upload software in Arduino IDE since the SD card uses IO2 as CS, the SD card must be removed when uploading a new sketch.
The T-A7670G modem does not contain a GPS positioning component and requires an additional external GPS positioning module to use the positioning function. LilyGo T-A7670G with GPS uses Quectel L76K as the T-A7670G auxiliary positioning function, which requires a part of the IO, please refer to the GPSShield example , How to identify whether you have an external GPS module please see #issues56

6️⃣ FAQ

Can't upload any sketch，Please enter the upload mode manually.
1. Connect the board via the USB cable
2. Press and hold the BOOT button , While still pressing the BOOT button (If there is no BOOT button, you need to use wires to connect GND and IO0 together.)
3. Press RST button
4. Release the RST button
5. Release the BOOT button (If there is no BOOT button, disconnect IO0 from GND.)
6. Upload sketch
Upgrade modem firmware
1. T-A76XX Upgrade docs
How do I connect the antenna correctly?
1. Check the silk screen on the board. GPS stands for GPS antenna. Only active GPS antenna can be connected here.
2. SIM or MAIN, this is the main antenna interface of LTE
3. AUX This is the diversity antenna for LTE, used to enhance the signal
Solar input voltage range?
1. 4.4 ~ 6V , As long as the voltage matches, the solar panel power is not limited
Can't get location?
1. Please write the compiled firmware for testing. Please see here for details.
Where can I access solar energy to charge the panel?
1. Some boards(T-A7670,T-A7608,T-A7670-S3,T-A7608-S3) have their own solar battery input interface, you just need to connect the solar panel correctly according to the polarity.
2. If the board has an external VBAT pin, you can connect the solar rechargeable battery input to VBAT. Please be careful not to exceed the battery supply voltage, which is usually 4.2V.
3. If there is no VBAT, you can also connect it to the VBUS Pin, which is the input pin for USB power supply. Connecting it to VBUS will share the 5V of the USBC. Please note that when connecting an external charger, disconnect the USBC or disconnect the solar energy. enter
How to use voice call example?
1. Voice calls require external welding of the condenser microphone and speaker. Generally, the board silk screen is marked SPK. The speaker needs to be welded, and the MIC silk screen position needs to weld the condenser microphone.
SIM767XG sendSMS and VoiceCall?
1. Although the manual of SIM767XG states that it has the functions of making voice calls and sending text messages, the current firmware does not support it.
Unable to detect SIMCard?
1. All SIM series need to insert the SIMCard into the board first and then power on to detect the SIM card. If the order is reversed, it will report that the SIMCard cannot be detected.

7️⃣Resource

SIMCOM official website document center
A7670/A7608-Datasheet
SIM767XG-Datasheet
- SIM7672 Hardware Design manual
- SIM7672 AT Command
Schematic
Dimensions

arnabmach0 / lilygo-t-a76xx Goto Github PK

lilygo-t-a76xx's Introduction

🌟LilyGO T-A76XX🌟

News

1️⃣Product

2️⃣Examples

Quick start ⚡

3️⃣ PlatformIO Quick Start (Recommended)

4️⃣ Arduino IDE Quick Start

Writing as a beginner

5️⃣ Notes for new Users <T-A7670X/T-A7608X>

6️⃣ FAQ

7️⃣Resource

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