问用霍尔效应传感器(A3144)测量电机转速的Arduino转速仪EN扭矩是指步进电机运转时从输出轴的平均力矩，俗称为步进电机的“转劲”。扭矩越大，步进电机输出的“劲”越大，输出轴转速的变化也越快。扭矩随步进电机转速的变化而不同，转速太高或太低，扭矩都不是最大，只在某个转速时或某个转速区间内才有最大扭矩，这个区间就是在标出最大扭...
int analogValue = analogRead(1); int analogVolts = analogReadMilliVolts(2); // print out the values you read: Serial.printf("ADC analog value = %d\n",analogValue); Serial.printf("ADC millivolts value = %d\n",analogVolts); delay(100); // delay in between reads for clear read from...
readCh0Light(Ch0) ) { return false; } /* Read value from channel 1 */ if ( !readCh1Light(Ch1) ) { return false; } val = ulongAmbientToLux(Ch0, Ch1); return true; } float APDS9930::floatAmbientToLux(uint16_t Ch0, uint...
Pass delay time (in ms) between frames. void rainbow(int wait) { // Hue of first pixel runs 5 complete loops through the color wheel. // Color wheel has a range of 65536 but it's OK if we roll over, so // just count from 0 to 5*65536. Adding 256 to firstPixelHue each ...
resolution); Serial.println(F("%"));// Set delay between sensor readings based on sensor details.delayMS = sensor.min_delay / 1000;}// Delay between measurements.delay(delayMS);// Get temperature event and print its value.sensors_event_t event;dht.temperature().getEvent(&event);if (is...
//Confirmed microphone low value, and max value #define MIC_LOW 0.0 #define MIC_HIGH 300.0 /** Other macros */ //How many previous sensor values effects the operating average? #define AVGLEN 5 //How many previous sensor values decides if we are on a peak/HIGH (e.g. in a song) ...
//#define TFT_RST -1 // Set TFT_RST to -1 if the display RESET is connected to NodeMCU RST or 3.3V// ### EDIT THE PIN NUMBERS IN THE LINES FOLLOWING TO SUIT YOUR ESP32 SETUP ###// For ESP32 Dev board (only tested with ILI9341 display)// The hardware SPI can be mapped to...
if (real_press) { count_presses++; Serial.println(count_presses); } delay(1); // delay in between reads for stability } 将其上传到Arduino Uno,然后启动串行监视器。 此代码所做的全部就是计数按钮的按下次数并将其打印在串行通讯线上。代码是不言自明的。
// Keep in mind the pull-up means the pushbutton's logic is inverted. It goes // HIGH when it's open, and LOW when it's pressed. Turn on pin 13 when the // button's pressed, and off when it's not: if (sensorVal == HIGH) { ...
void detach(); void write(int value); // if value is < 200 its treated as an angle, otherwise as pulse width in microseconds void writeMicroseconds(int value); // Write pulse width in microseconds int read(); // returns current pulse width as an angle between 0 and 180 degrees int ...