Project description

Based on Air780E, the 4-way switch can collect environmental temperature and humidity through IIC. It supports mobile Mini Program control of 4 relays + device temperature and humidity reporting, supports local 433 remote control, 5-18V voltage input, supports secondary development, and is controlled through graffiti intelligent/private server. It can be used for access control, smart home, farm management, etc.

Open source license

Maintenance stopped because the project code was copied and sold

Schematics, PCB, and code (Doodle Smart Platform + Genie IoT Access) are completely open source, but individuals are not allowed to create, sell, or resell materials. If you need to use them, please indicate the source.

Latest code address: https://github.com/fairycloudpublic/FairyCloud_AIR780E_4DB_PUBLIC

Detailed documentation tutorial: https://gv9jqt8gpcb.feishu.cn/docx/Pkded6OrkoAWDoxVn93cZACmnpc

Project related features

• Product name: 4G intelligent remote switch
• Main functions:
• 1. Can control 4 relays, turn on/off the appliance through the relay in the Mini Program, and customize the temperature threshold to achieve automatic control;
• 2. It can be connected to the device through the Mini Program of the mobile phone, and the temperature and humidity values, relay status, voltage, connection status, system restart, relay switch and other functions can be displayed after connection;
• 3. Local control can be carried out through the 433 remote control module (model: Ling-R1A-M3_433 point), and the anti-interference ability is strong;
• 4. Mini Program platform can define interface functions by itself, add status display, customize exclusive interface, and share devices;
• 5. The platform supports a variety of IoT products, such as 4G locators/ESP32 smart furniture/AI voice assistants, etc. Welcome to join the group to discuss.
• This device supports Graffiti Intelligence and Genie IoT platform. Welcome to join the group for discussion: Q 630017549 (Note, Li Chuang Open Source Platform).

Item properties

This project is completely original and publicly available for the first time. The Lua code, PCB, and schematic are completely open source. Data reselling is prohibited, otherwise the consequences will be at your own risk . This project lasted for 2 months, with two versions of PCB proofing, following the GPL3.0 protocol. Please also support open source and jointly maintain the domestic open source environment.

Only for learning and research purposes, please do not use it for illegal purposes, not responsible, all consequences are borne by the user! Without the written permission of the copyright owner, it cannot be used for commercial purposes. If you need to use it for commercial purposes, please contact the original author.

Risk Warning:

This project may involve 220V strong electricity, so there is a serious electricity risk. To ensure safe use, users must follow the following suggestions:

Users must have professional electrician skills or seek the support of a professional electrician for installation, commissioning, and maintenance.

When using this project, relevant safety standards and regulations must be followed, including but not limited to correct grounding, use of appropriate insulation materials, and safety equipment.

Users should understand and be aware that incorrect installation or operation may lead to serious safety accidents such as electric shock and fire, so they should bear the responsibility for the risks of electricity use.

The reference materials of this project are for reference only. We are not responsible for any risks or losses caused by the reference projects. Users need to evaluate the risks themselves and take appropriate security measures when using this project.

In any case, Genie IoT and its related contributors are not responsible for any direct or indirect losses or damages caused by the use of this project. By using this project, the user has understood and accepted these risks and responsibilities.

Please note that this project is provided "as is" without any express or implied warranties or conditions. To the maximum extent permitted by applicable law, Genie IoT will not be liable for any direct, indirect, incidental, special, punitive, or subsequent losses or damages.

Project schedule

2024-9-22 V1.0 Verified Core Board IC and Code

2024-10-16 V1.1 hardware and tuya platform code

2024-10-17 V1.2 Adjust PCB layout, optimize antenna part, add ESD protection IC, 433MHZ remote control program to be verified

2024-11-07 submission procedure

2024-11-24 V1.3 access to Onenet platform, hardware pin optimization

2025-3-23 delete code

Hardware part

1. Main control MCU

Air780E is a 4G full network communication module launched by Hezhou Communication. It uses the core-shifting EC618 platform, supports LTE 3GPP Rel.13 technology, and the module is packaged in LGA.

2. DC-DC

JW5359M is a single-chip buck switching regulator based on the I2 architecture, which can achieve fast transient response. JW5359 operates in the input range of 4.5V~ 18V and provides 2A continuous output current through two integrated N-channel MOSFETs.

3. Temperature and humidity sensor

Humidity measurement range: 0~ 100% RH

Temperature measurement range: -40~ 125 ℃

Working voltage: 2.4~ 5.5VDC (wide voltage)

4. Relay

Maximum support for controlling 250V & 15A devices.

Docking with Genie IoT Platform

Mini Program Search: "Genie IoT"

IoT Mini Program Interface:

Design considerations

Welding 780E requires steel mesh + hot air gun/steel mesh + heating table.

Choose one of R25 or 26 resistors.

BOM has been matched, JW5359M DCDC chip, out of stock on Lichuang Mall, please go to other platforms to purchase.

Pay attention to the selection of C3 capacitor withstand voltage

The shell link is as follows

Physical display

For more information, please see the Bilibili demonstration video

[Four remote intelligent switches, 4G networking support remote Mini Program and web control, also support 433 control, remote single relay control and single instruction, one-key control, automation task monitoring.] https://www.bilibili.com/video/BV1BNBbY2EKT/?share_source=copy_web&vd_source=4f2f7d631a4337f8bb957424b07b79f5