Since the Sino:bit uses the same MCU as the Micro:bit, it has the same analog input capabilities (see the GPIO section).
int analogPin = 0;
int val = 0;
void setup()
{
Serial.begin(9600);
}
void loop()
{
delay(1000);
val = analogRead(analogPin);
Serial.println(val);
}
The big LED matrix gives us more potential for displaying things, like a histogram of analog readings.
#include <sinobit.h>
Sinobit matrix = Sinobit();
int analogPin = SINOBIT_PAD_P0;
int readings[12];
void setup()
{
matrix.begin();
delay(100);
matrix.clearScreen();
for (int i = 0; i < 12; i++) {
readings[i] = 0;
}
}
void loop()
{
delay(1000);
for (int i = 0; i < 11; i++) {
readings[i] = readings[i + 1];
}
// experience showed that my photocell never got to a max reading
// which is why I use 12 as the upper limit instead of 11 as expected
readings[11] = map(analogRead(analogPin), 0, 1023, 0, 12);
for (int i = 0; i < 12; i++) {
if (readings[i] == 0) {
matrix.drawLine(i, 11, i, 0, 0);
} else if (readings[i] == 11) {
matrix.drawLine(i, 11, i, 0, 1);
} else {
matrix.drawLine(i, 11, i, 12 - readings[i], 1);
matrix.drawLine(i, 11 - readings[i], i, 0, 0);
}
}
matrix.writeScreen();
}
Page last edited March 08, 2024
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