If you are using the sensor at room temperature, readings will be more accurate if you turn off the temperature compensation function.

Hello, if you are taking measurements at room temperature, you need to keep the temperature compensation function turned off. If you turn it on, it will cause a large deviation in the gas concentration.

For the issue on placing an order, you can contact our sales team.

email.
store@dfrobot.com

The I2C bus should always be high when idle.
You can upload a code that doesn't call I2C and then measure the voltage from SDA/SCL to GND, if it's still 0V, you have a faulty ESP32.
You can apply for after-sales service from the seller.

The connector is JST PH2.0 3pin instead of JST XH2.54.

Hello, please refer to the Arduino IDE tutorial.

https://www.unihiker.com/wiki/K10/GettingStarted/gettingstarted_arduinoide/

Since the K10's screen and camera are directly connected to the on-board ESP32, so a large number of ESP32 GPIOs are occupied.
We can't pin out enough GPIOs for the ESP32 on the K10, the IOs on the K10's edge connector are all converted out by an I2C to GPIO chip. So the K10 doesn't have an SPI interface to call.

This is a known bug in the current MicroPython and will be fixed in the next MicroPython update.
The next version of MicroPython will be available soon.

Currently, the Arduino SDK for the UNIHIKER K10 only works with the Arduino IDE 1.8.19. Can you confirm your IDE version?

Would you post your micropython code so I can try to replicate this problem on my K10?

Can you try checking the MicroPython COM port representing the K10 multiple times in the lower right corner of the Thonny, or try plugging and unplugging the USB-C cable to re-establish the connection between the PC and the K10?

We have now localized the issue and will address it in the next version of the MicroPython firmware.

Hi, the operating voltage of C1001 is 5V DC.

This is because the RF circuitry on the board needs 5V to work at optimal operating conditions.
So the 3.3V supply may not be enough.

You can use Mind+ to re-initialise it through the steps on the official K10 website.
And burn the English version of the factory programme.

UNIHIKER K10 official website:

https://www.unihiker.com/wiki/K10/GettingStarted/gettingstarted_mindplus/#factory-programme

You can understand that the BLE Sensor Beacon is a very simple MCU dev board.
Its only function is to receive data from digital/analogue/I2C sensors and transmit it out via Bluetooth BLE.
Unfortunately it doesn't support tag reading.

Possibly you looked at the guided tutorials for the UNIHIKER M10.
The K10 is an ESP32 based MCU dev board. so it will appear as a COM port on your PC when connected via USB.
The default is the ArduinoC firmware, you need to flash micropython firmware first if you want to program with Thonny.

Tutorial:

https://www.unihiker.com/wiki/K10/get-started/

MicroPython:

https://www.unihiker.com/wiki/K10/GettingStarted/gettingstarted_mpy/

The FireBeetle ESP32 uses the CH340 as the USB-TTL converter chip, can you confirm that you have installed the driver for this chip on your computer?

Windows: https://www.wch-ic.com/downloads/CH341SER_EXE.html

MacOS: https://www.wch-ic.com/downloads/CH341SER_MAC_ZIP.html

Linux: https://www.wch-ic.com/downloads/CH341SER_LINUX_ZIP.html

However, the CH340 driver is built-in in most modern Linux distributions, so if you have Linux and don't have a CH340 driver, it's more advisable to upgrade the Linux kernel rather than installing the driver manually.

We are very sorry, but we have no plans to do so at this time.
The silkscreen on our PCBs often indicates the name of the product. You can search for that product on the official website by the product name.

This sensor doesn't output actual data, it just outputs a high level signal when it detects a liquid, so it doesn't have a resolution parameter.

The SGP40 library released by DFRobot has a readRawdata() function that directly outputs VOC raw data.

https://github.com/DFRobot/DFRobot_SGP40/blob/master/src/DFRobot_SGP40.h

What kind of ultrasonic sensor are you using? Trig-echo type like SR-04?

DFRobot got example code for this type of sensor:

https://wiki.dfrobot.com/URM09_Ultrasonic_Sensor_Gravity_Trig_SKU_SEN0388#target_4