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| 4*4 Matrix keyboard 每 to test password lock and other items.s. |
Buzzer voice/PWM output experiment 每 to practice normal voice, music and PWM output sound. |
5-way independent key-press每for easy various key-press input experiments. |
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Infrared remote-control receiver 每 to practice infrared remote-control decoding and all kinds of infrared remote control.l. |
All I / O output to facilitate expansion |
IIC (I2C) communication 每 to read/write 24CXX series chips with hardware IIC or software IIC directly. |
SPI communication每to read/write EEPROM of 93CXX with hardware SPI or software analog SPI,to select 8-bit or 16-bit read/write method through jumper. |
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Clock selection 每 jumper for switch between various oscillation modes, to replace crystal vibration of different frequency as required by development of product. |
DS18B20 digital temperature sensor 每 1-wire bus communication, wide range for temperature measurement, high accuracy and sensitivity (remark: chip DS18B20 is optional). |
Stepper motor driver circuit(remark: Setpper motor is optional). |
Simulation debugging interface 每 to directly connect ICD1/ICD2/MCD1/MCD2 and carry out on-line simulation for on-board chips and resources |
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| On-board power module 每 can connect to the polarity of external AC or DC power supply optionally, voltage range 7-12V |
mcu/mpu reset key |
1-way A/D converter signal input. |
8-way independent LED |
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