STM32F407ZET6 24 channel 12 bit AD sampling module data acqu

Date:2024-11-01 Views:

a) About

Supports simultaneous measurement of ADC values through 24 channels, with input voltages ranging from 0 to 3V, and each ADC port is equipped with TVS protection. The measurement speed can be changed through AT commands, with a maximum upload speed of 10K times per second. Cooperate with Vofa+upper computer to display real-time voltage waveform.

b) View

①Front view

②Side view

③Reverse image

c) Introduction and Explanation

Board size：68mm*90mm/40g

Interface Introduction

d) Functional Features

1. High performance main control chip: Using STM32F407ZET6 as the core processor, it ensures powerful processing capabilities and high-speed data processing.

2. Multi channel measurement: Supports simultaneous measurement of 24 channels, meeting the synchronous acquisition requirements of multiple signals in complex scenarios.

3. Safe voltage range: The measured input voltage range is 0-3V, ensuring the safety of the equipment and avoiding overvoltage use.

4. Flexible upload rate: Provides multiple upload rate setting options, up to 10000 times per second, to meet different data transmission needs.

5. Real time data visualization: In conjunction with Vofa+upper computer software, real-time display of voltage waveforms is achieved for easy monitoring and analysis of data.

6. Open firmware development: Introduce a microcontroller debugging interface, allowing users to develop and upgrade firmware on their own, increasing the product's customizability.

7. Intuitive indicator lights and keys: The onboard red power light and blue operation indicator light, as well as the reset key, provide intuitive device status feedback and convenient operation.

8. Type-C multifunctional interface: The Type-C interface is used for power supply and data transmission, supporting high-speed data transmission and forward and reverse plug design, which improves the convenience of use.

9. Dual channel data upload: The Type-C interface is used to upload calculated voltage values, while the serial port is used to upload raw ADC values, providing flexible data output options.

e) Instruction for use

1. Plug in the Type-C to USB cable, and the computer will automatically list the serial device

2. The red power light is on normally, and the blue indicator light represents the upload speed. Upload data 100 times and change the blue light status once.

3.If you use a regular serial port tool, you can see the data being sent, but if the speed is too fast, it will freeze. It is recommended to use a free serial port host computer, which has powerful functions and there are many videos of using it online.

VOFA-Plus上位机 | VOFA-Plus上位机

4.After downloading, it can be run directly. Select JustFloat as the data protocol, choose the corresponding serial port (USB virtual serial port does not need to select baud rate), and click connect. At this point, the received data can be displayed.

5.Drag the chart icon into the new tab in the control, right-click and select full screen fill

6.Right click on the Y-axis to select the channel to be displayed, and the ADC measurement results will be presented in waveform form.

7.Sending AT commands through the USB port can modify the measurement speed, which will take effect immediately after modification and be saved. The speed will be maintained during the next power on.

AT+REPORT=0	每秒上传10K次
AT+REPORT=1	每秒上传5K次
AT+REPORT=2	每秒上传1K次
AT+REPORT=3	每秒上传500次
AT+REPORT=4	每秒上传100次
AT+REPORT=5	每秒上传50次
AT+REPORT=6	每秒上传10次

8.The data uploaded through the USB port is voltage values, ranging from 0 to 3.3. When uploading, it is converted to Justfloat format. For details, please refer to:

JustFloat | VOFA-Plus上位机

9.The data uploaded through the serial port is ADC value, ranging from 0 to 4096, with a serial port baud rate of 1000000. Connect the board to CH343 using DuPont wire. The TX of the board is connected to the RX of CH343, and the GND of the board is connected to the GND of CH343. Insert a 5V power supply to read data through the serial port.

Upload format starting with 0xAA 0xFF+Data 0 Low Bit+Data 0 High Bit+Data 1 Low Bit+Data 1 High Bit
0x05B4=1460, 1460 is the actual voltage value of CH0 ADC=1460 * 3.0/4096=1.069V

f) Download User Manual

For more product information, please refer to [Baidu Netdisk]extraction code: t37f

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