Local + remote control management system, remote + short-range free control of household electrical switches/industrial power switches in various scenarios.

1. With the continuous development of technology, free control can be achieved.

2. Solve problems such as being too lazy to get out of bed to turn off the lights, forgetting to turn off electrical appliances after leaving home, etc.

Note: There is something wrong with the hardware. I changed it on the board when I adjusted it. Please do not use the board for development. I will update later.

Overall display:

The 1.7-inch LCD touch screen and core board form a terminal control, which can control several electrical appliances through Bluetooth communication with a mobile phone.

2. Rotary encoder + RF module for lighting brightness and comfort level control and selection settings. Button selection function, which has the functions of left turn, right turn, and press confirmation. It uses the output phase difference of the pulse signal during rotation to confirm the left and right rotation.

3. Each independent electrical appliance is controlled by MCU + RF module + relay.

4. There is 4G real-time monitoring + control operation remotely, so that electrical appliances can be turned on and off remotely.

Partial display:

1. Remote control-NB module + local RF module:

2. RGB touch screen is used as touch display and physical control terminal.

3. Can be connected to the core board through APP (NB module cloud control) to control various electrical appliances.

4. If you forget to turn off the electrical appliances at home after going out, you can check it through the APP and control the on and off of the electrical appliances through the NB5313 module + RF98 module. (can also be used for industrial purposes)

5. There is a 4-bit hardware address to distinguish between the master and the slave.

Shuttle display:

The coding switch realizes the left, right and press confirmation functions.

Shuttle core board display:

1. Shuttle wireless control + local RF module:

2. Wireless selection + confirmation function switch composed of coding switch + RF98.

3. There is a 4-bit hardware address to distinguish between the master and the slave.

RF switch display:

1. Wireless switch + local RF module:

2. This is a wireless coding switch that communicates with other controlled electrical appliances through the RF module. Used for switching, function selection, function adjustment, etc.

3. There is a 4-bit hardware address to distinguish between the master and the slave.

NB remote control panel display:

1. Data can be transferred to the cloud for monitoring through the APP.

2. The APP sends instructions to the NB module through the cloud to remotely control electrical appliances.

Core expansion board

1. Core board + NB module controls the adjustment of global electrical appliances through wireless RF (433M) communication.

2. The core board can be used for local control of the 7-inch LCD.

Communication module introduction:

RFM98 is a 433MHz version of LoRa transceiver design and application. It is a transceiver using LoRa remote modem, which can provide ultra-long-distance spread spectrum communication and high anti-interference while consuming a trace amount of current.

NB module introduction:

The M5313 module is a dual-mode NB-IOT/GSM industrial-grade communication module based on the LCC interface . It can be widely used in low-power data transmission equipment and meets the 3GPP Release 14 standard. M5313 can support the following frequency bands: NB-IOT : Band 3/Band 5/Band 8 GPRS : Band 2/Band 3/Band 8 M5313 adopts a highly integrated design solution to integrate RF and baseband on a PCB to complete wireless RF signals It has receiving, transmitting, and baseband signal processing functions, and uses LCC interface externally. The module size is 19.0mm*20.9mm*2.7mm . The M5313 module adopts low power consumption technology, and the current is as low as 5uA in deep sleep mode .

The main communication code is LoRa (RFM98 claims a communication distance of 8 kilometers, I have only tried 1 kilometer)

debug

NB module: https://b23.tv/PTMVuc

Analog RF switch: https://b23.tv/wkQWPy

Resource recommendations

LoRa reference: https://blog.csdn.net/HowieXue/article/details/78049603?utm_medium=distribute.pc_aggpage_search_result.none-task-blog-2~all~first_rank_v2~rank_v28-2-78049603.nonecase&utm_term=payloadcrcerror% 20%E4%B8%AD%E6%96%AD&spm=1000.2123.3001.4430

Antenna design reference: https://www.antenna-theory.com/cn/antenna.php

RF antenna reference: https://www.docin.com/p-2158776079.html

NB reference: http://iot.10086.cn/Chipmodule/readmodule/id/798