The utility model discloses an
internet of things teaching development board based on OpenHarmony, which belongs to the technical field of
internet of things and comprises a core control board, a function expansion board and a
signal expansion board. The core control board is integrated with a
processing module, a display module, a communication module, a sensing module and the like; the function expansion board provides a touch-to-connect function and a
wired communication function; the
signal expansion board supports
signal acquisition of various sensors. An OpenHarmony
system and related development tools are adopted, and after the core control board, the function expansion board and the signal expansion board are correctly connected, power is supplied to the development board through a power interface. HUAWEI DevEco
Studio 3.1 Beta2 and OpenHarmony SDK 9 are used for writing related project programs of
the Internet of Things, and debugging and downloading of the programs are carried out through a DEBUG
serial port TTL socket and a JTAG debugging interface. The development board can realize acquisition of signals of the temperature and
humidity sensor and the photosensitive sensor, and performs interactive display,
automatic control and early warning in combination with the
OLED display screen and the function keys; wired /
wireless data communication is carried out through the
Ethernet port and the WiFi module; a touch-to-connect function is realized through the NFC module of the function expansion board, and
wired communication is realized through the RS485
communication interface; various sensors can be introduced through the signal expansion board, and related teaching application development of
the Internet of Things can be realized, including sensor data reading, wired /
wireless data communication, comprehensive application development and the like. And an experiment platform with high integration level and strong expansibility is provided for
Internet of Things teaching.