LC-EM-1309
Contents
Product Name
STM32F407ZET6 24 channel 12 bit AD sampling module data acquisition Type_C interface
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
View
Front view
Side view
Reverse image
Introduction and Explanation
Board size: 68mm * 90mm/40g
Interface Introduction
Functional Features
1. High performance main control chip: The STM32F407ZET6 is used as the core processor,
ensuring 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 settings 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: introduces a microcontroller debugging interface,
allowing users to develop and upgrade firmware on their own, increasing the product's customizability
7. Intuitive indicator lights and buttons: The onboard red power light, blue operation indicator light,
and reset button 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/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
Instructions 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 using a regular serial port tool, you can see data transmission, but if the speed is too fast, it will freeze.
It is recommended to use a free serial port host computer, which is powerful and has many usage videos online
VOFA Plus upper computer | VOFA Plus upper computer
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 | Upload 10K times per second |
| AT+REPORT=1 | Upload 5K times per second |
| AT+REPORT=2 | Upload 1K times per second |
| AT+REPORT=3 | Upload 500 times per second |
| AT+REPORT=4 | Upload 100 times per second |
| AT+REPORT=5 | Upload 50 times per second |
| AT+REPORT=6 | Upload 10 times per second |
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 upper computer
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
User Manual Download
For more product information, please refer toBaidu Netdisk Extraction code: t37f
