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Learn how to use the CJMCU-0401, a 4-bit button capacitive touch proximity sensor with self-locking function, with Arduino Uno. See the circuit diagram, parts list, code and output of this project.
I have recently been looking at a lot of breakout boards and noticed they have CJMCU in their description and even printed on them. Initially I thought it may be an acronym and then thought it may be a brand but I have not been able to find any information at all.
The CJMCU is a tiny board with a 3-Axis Compass, an Accelerometer/Gyro and a 5v serial port. Learn how to flash, connect, charge and configure it for your quadcopter.
CJMCU. The CJMCU is a tiny (80mm) board running a STM32F103, which contains a 3-Axis Compass (HMC5883L) and an Accelerometer/Gyro (MPU6050). This board does not have an onboard USB-Serial converter, so an external adapter is needed.
Users share their experiences and links on using the CJMCU FT232H USB to JTAG UART FIFO SPI I2C dev board, a multifunctional module for embedded computing. See datasheets, add on boards, and alternative suppliers for the FT232H chip.
CJMCU-64 Neopixel Display Workout With Pi Pico and Micropython: The CJMCU-64 RGB LEDs board has 64 Neopixels arranged in 8 rows of 8. Each of the 64 LEDs can be set to any one of 16,777,216 colours by specifying each of the red, green and blue components with a number in the range 0 to 255. The board is very bri…
Learn how to use the CJMCU 101 sensor module, which includes the OPT101 light sensor chip, to detect light intensity with an Arduino Nano board. See the circuit diagram, code, and video guide for this project.
My initial attempt at using this was to go directly from the CO/NO2/NH3 pins to a bit leveler to go from 5.5 to 3.3 and then to a ADS1115 connected to a Raspberry Pi and then use the voltages to get the RL/R0 ratio and then use that with the equations to get the ppm (after doing a long term calibration in fresh air to calculate the fresh air values, ie the max voltage or ADC steps).
ESP32 DEV module connected to a suitable sensor module; any ESP 32 module should be suitable, but you may need to adapt pinouts. I use a CJMCU-531 sensor carrier module, these are freely available online from AliExpress and the like.
LM75 Temperature Sensor: LM75 with Arduino, LM75 I2C, LM75A Arduino Library, CJMCU-75 temperature sensor-In this article, you will learn how to make a temperature monitoring system using I2C supported LM75 or CJMCU-75 or LM75A sensor module, Arduino Nano, I2C supported SSD1306 Oled display module, and a 5V buzzer.So far, I have covered majority of the temperature sensors, including DHT11 ...