Current Product Don't Have Test Firmware
Note: pls, use PC chrome/edge browser, if can't connect, refresh the webpage.
1. Click connect button
2. After connected successfully, pick a firmware
3. Click the burn button
4. After burning successfully, Unplug the device and restart.
ATOM DTU NB CN is a programmable data transmission unit (DTU) with integrated NB-IoT communication function. The built-in SIM7020C module covers most of the Cat-NB frequency bands and integrates the SMA external antenna interface to improve the communication quality and signal stability of the device. Unlike the DTU, which generally only has the function of data transparent transmission, the ATOM DTU series adopts a more open architecture design. The controller ATOM LITE can modify the program at will according to the actual business, and the whole machine reserves a variety of interfaces (RS485, I2C, custom interfaces) for user expansion, which is convenient for the rapid access of sensors and actuators. The self-contained guide rail clamping structure is perfectly embedded in various industrial control sites. ATOM DTU NB CN is very suitable for various low-latency, low-throughput application scenarios (such as remote control, asset tracking, remote monitoring, remote medical treatment, shared bicycles, etc.).
SIM7020C/Applicable to China
RS485 communication interface (with 12V input interface, internal integrated DCDC step-down 5V)
Strong signal access capability
AT command control
SIM card type: MicroSIM
External antenna: SMA antenna interface
Grove expansion interface:
Serial communication: UART 115200bps
Self-contained rail clamping
Cat-NB frequency band:
Data transmission (kbps):
|Support Cat-NB frequency band||B1/B3/B5/B8|
|Network protocol||TCP/UDP/LWM2M/COAP/ MQTT/HTTP/HTTPS/ TLS/DTLS/DNS/NTP/ PING/OneNET/Telecom Cloud/Aila Cloud*|
|Product Size||64 * 24 * 29mm|
|Package Size||91 * 42 * 24.5mm|
Before using UIFlow programming, you need to burn the UIFlow firmware for the ATOM master, click here to view the quick start tutorial .
Init NB-IoT DTU
Power down module
Set command echo mode
Check module status
Check single quality
Check network registration
Check GPRS network registration
Enable PDP context
CoAP connect ip port
CoAP GET url security
CoAP POST url payload content format security
CoAP PUT url payload content format security
MQTT connect server port client id username password keep alive
MQTT subscribe topic QoS
MQTT subscribe callback topic msg
MQTT unsubscribe topic
MQTT publish topic payload Qos
MQTT check connection
MQTT poll downlink message
RS485 write a line
RS485 write raw data create list with
RS485 read all
RS485 read characters
RS485 read line
Read coils slave address starting address coil qty
Read discrete inputs slave address starting address input qty
Read holding registers slave address starting address register qty signed
Read input registers slave address starting address register qty signed
Write single coil slave address output address output value
Write single register slave address register address register value signed
Write multiple coils slave address starting address output value
Write multiple register slave address starting address register value signed
Connect to the MQTT server to implement message subscription and publishing. When a new subscription message is received, the callback function will be called and the topic name and data content will be passed, and the output result will be printed to the USB serial port.
Execute the following statement in Setup() of the Arduino program
When M5Core2 is stacked with other M5 modules, you need to remove the battery base of Core2, which does not support module stacking.
Reason and solution: The power supply current of the port is insufficient, which can cause the device to not enter the download mode normally. You can try to connect a capacitor (>0.1uF) between the RST pin and the GND pin, or when uploading the program, set the G0 Short-circuit to GND, so that G0 can be set to a low level state normally
Add the header file #include <driver/adc.h> and the function adc_power_acquire(); in the Arduino program
The battery life of the controller is affected by various factors such as battery capacity, operating status, and load, so there is no fixed value. Reducing the load and adopting a sleep strategy can effectively increase the battery life.
Support multiple stacks, the total capacity of the batteries in parallel increases, and the voltage remains unchanged. However, since the discharge of each battery is not balanced during use, there is a voltage difference between the batteries, which may cause the battery to charge backwards. .(will lose part of the battery capacity)
ESP32 module currently does not support WiFi in 5G band, only 2.4G.
Confirm whether the TX/RX pin on the TTL side of the pin is correct, try to add two 120Ω terminal resistors at the beginning and end of the device line to reduce signal reflection interference
Click the link below to view the product comparison table
Rotate the lens to adjust the focal length within a certain range
FACE II BOTTOM NOT CORE2 COMPATIBLE
Use esptool to read the flash content of esp32 and export the bin file. Refer to the detailed operation
Restart the Arduino IDE, the computer uses the mobile AP mobile network to download.
Refer to the Github link below, use arduino-esp32fs-plugin for file upload
Check if the COM of the corresponding device is selected and if the M5Burner is the latest version
UIFlow users can switch the Label font to Unicode, Arduino users can use the Chinese font library provided in the M5GFX driver library
Confirm whether the SD card format is FAT32, and no partitions exist.
You can refer to the following link for other ESP32 users to share the case program
STAMP C3U enters program download mode operation: 1. Long press the center button (G9) of STAMP C3U when the power is off. 2. Connect to the computer, after the port is successfully identified, program burning.
By default, USB CDC is not enabled, the serial port output started by C3U will be output through the default pins (G20, G21) of UART0. If you want to output through USB, please use the IDE to output Its USB CDC option is enabled. (Arduino users can enable it through Tools->USB CDC on Boot-Enabled. For IDF users, please refer to the ESP IDF official documentation.)
Refer to the UIFlow documentation of the corresponding device to check whether the device has entered the USB programming mode.
Make sure that the NBIoT used is not locked. Frequent device replacement or after activating the IoT card, using traffic in different places may cause the card to be locked. If the above situation occurs, please contact the IoT card supplier. If you are using the IoT card matching M5, please contact M5 after-sales through e-commerce or email. (provide the ICCID of the IoT card)
Describe the problems encountered in detail. Screenshots of the programs involved or files can be added as attachments and sent to M5Stack's official after-sales email