Data transparent transmission based on MM32W wireless MCU series

Introducing a Bluetooth case - a data transparent transmission application developed based on the MM32W series.

Add a Bluetooth remote control setting circuit to the 4-20mA two-wire passive digital display meter

The RSL10 module is plugged into the self-made optocoupler isolation circuit board, and the entire module is connected in series with the modified target instrument (4-20mA two-wire passive digital display meter) and then connected to the 4- In the 20mA current loop, when the actual working zero current is 4mA, the target instrument displays 4.000mA in the current mode; the overall voltage drop of the circuit board of the work is 2.513V; the changed range or unit is sent to the RSL10 on the circuit of the work through the mobile APP Setting command, the target instrument (currently its own voltage drops by more than 1V) will be changed by Bluetooth remote control to change the setting state, such as switching to different ranges or displaying different measured physical quantity units, etc.

Schematic PCB

Design of bus passenger counting system based on infrared technology

    The system uses TI's MSP430F149 microcontroller as the core controller. This microcontroller has a 16-bit CPU integrated register and constant generator, which can maximize the code efficiency of the microcontroller. It integrates JTAG and supports online programming; two universal full-duplex Serial synchronous/asynchronous communication interface; PWM control output; external interrupt input interface. The microcontroller is responsible for sampling the bus door opening and closing signals, turning on or off the infrared counting module, recording the number of people getting on and off at each bus stop, storing the data on the number of people getting on and off at each bus stop, and transmitting the stored data to the computer.

Schematic PCB

Graduation project based on the design of automatic flower watering system based on 51 microcontroller (including schematic diagram, source program, thesis, etc.)

Contains all design information

Schematic PCB

Design of smoke SMS alarm based on STM32 (program, PCB, schematic diagram)

Detect whether there is smoke and flammable gas in the environment. If the above gases are present, send an alarm text message to the mobile phone.

Schematic PCB

Design of temperature acquisition and alarm system based on STM32 (source program, schematic PCB, etc.)

When the temperature is lower than the set threshold, the corresponding indicator light lights up and the corresponding relay is closed. The relay can drive the load (fan, refrigeration plate, heating tube, etc.). When the temperature is higher than the alarm value, the sound and light alarm will sound. The keys are setting keys, plus key and minus key. The alarm value and temperature control range can be set, the temperature measurement range is 0 to 99.9 degrees Celsius, and the accuracy is 0.1 degrees Celsius.

Schematic PCB

Design based on STM32 imitation Mitsubishi PLC (program + circuit diagram)

Based on STM32 imitation Mitsubishi PLC design, including program and circuit diagram

Schematic PCB

LD3320 speech recognition garbage classification design source program schematic diagram based on STM32

Start by saying the keyword "Trash"

Schematic PCB

License plate recognition control board schematic + 3D PCB

Share license plate recognition control board schematic + 3D PCB

Schematic PCB

Inverter drive circuit diagram + packaging schematic diagram

Special driver for fish machines, with totem variable drive

Schematic PCB

Design of traffic light control system based on microcontroller control

Traffic light control system principle design drawing

Schematic PCB

Protues simulation example (8051)-parallel port to serial port.rar

Protues simulation example (8051)-parallel port to serial port

Schematic PCB

Protues simulation example (8051)-PWM temperature adjustment.rar

Protues simulation example (8051)-PWM temperature adjustment.rar

Schematic PCB

Protues simulation example (8051)-PCF8574 application.rar

Protues simulation example (8051)-PCF8574 application.rar

Schematic PCB

Design of armed police sentry linkage alarm system based on STM32, supporting Ethernet and WIFI communication (hardware, source code, papers, etc.)

The armed police alarm information system terminal proposed in this article can realize alarm and linkage response, supports two communication modes of Ethernet and WIFI, and can realize mobile sentry alarm and fixed sentry alarm. The voice and display alarm information can be customized by users.

Schematic PCB

Electronic game source code wireless multi-function seat sign

This project designs a wireless multi-functional seat indication system suitable for various occasions. It uses MSP430 microcontroller as the core, CC2500 transceiver as the radio frequency module, and uses the Simplici TI wireless communication protocol to form a small radio frequency network.

Schematic PCB

Distributed wireless low-power temperature and humidity monitoring system for vegetable base based on MSP430luanchpad.

This project uses msp430g2231 as the core processing chip, which is composed of sensor acquisition module, wireless communication module, alarm module and host computer; two msp430 launchpads are used to simultaneously collect temperature and humidity through the dht11 temperature and humidity sensor, one as the host and the other as The slave machine uses a wireless communication module to communicate with the host machine, and the communication distance is more than 20 meters; the host machine directly communicates with the computer to transmit the temperature and humidity data to the computer, and at the same time, the upper limit of temperature and humidity can be set for The computer alarm can be used to differentiate between the host and the slave by playing specific songs or recording. In this way, you can first hear the changes in temperature and humidity. If you want to know the specific values ​​of temperature and humidity, you can directly check it through the host computer. Specific temperature and humidity values ​​enable real-time monitoring of the temperature and humidity of greenhouse vegetables, greatly improving the efficiency of large-scale planting.

Schematic PCB

E-sports source code low-power and low-cost global positioning tracker

E-sports source code low-power and low-cost global positioning tracker

Schematic PCB

temperature alarm

C51 microcontroller temperature alarm

Schematic PCB

Packaging line cumulative counter with shutdown memory

The cumulative counter of the packaging line made using a single-chip microcomputer has the function of saving the count value after shutdown and controlling the start/stop of the conveyor belt motor. The circuit is simple, reliable and practical.

Schematic PCB