Example Code for UNIHIKER K10 - Battery capacity
The article demonstrates battery monitoring code for UNIHIKER K10.
Hardware Preparation
Note: The multi-functional expansion board requires separate power supply when IN use. It can be powered by installing an 18650 battery or from the USB IN of the expansion board, and the PWR power supply switch needs to be turned on.
Software Preparation
If Using Mind+
- Mind+ Download
- Mind+ User Extension: https://github.com/YeezB/ext-UnihikerExpansion
If Using Arduino IDE
- Arduino IDE Download
- Arduino library: https://github.com/dfrobot/DFRobot_UnihikerExpansion
Use UNIHIKER K10 & Mind+

Use UNIHIKER K10 & Arduino IDE
#include "DFRobot_UnihikerExpansion.h"
#include "unihiker_k10.h"
UNIHIKER_K10 k10;
uint8_t screen_dir = 2;
DFRobot_UnihikerExpansion_I2C eunihiker(&Wire);
void setup()
{
k10.begin();
Serial.begin(115200);
while(!eunihiker.begin()){
Serial.println("NO Deivces !");
delay(1000);
}
eunihiker.setMotorPeriod(eMotor1_2, 255);
eunihiker.setMotorPeriod(eMotor3_4, 255);
k10.initScreen(screen_dir);
k10.creatCanvas();
}
void loop()
{
k10.canvas->canvasText("Battery:", 1, 0x0000FF);
k10.canvas->canvasText((String(eunihiker.getBattery()) + String("%")), 2, 0x0000FF);
k10.canvas->updateCanvas();
Serial.println(eunihiker.getBattery());
delay(1000);
}
UNIHIKER K10 Result

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