display.setCursor(0, 10); display.println("Frequency: " + String(frequency) + " Hz"); display.println("Duty Cycle: " + String(dutyCycle) + " %"); display.display(); } // 计算频率的函数 float calculateFrequency(int *samples) {// 实现频率计算逻辑 } // 计算占空比的函数 float calcula...
Voltage Vs Frequency|Ct Sensor|High Precision Measurement:Features ACS712ELC-05B/20A/30A chips for accurate 5A/20A/30A current sensing with 185mV/A/100mV/A/66mV/A resolution. Wide Operating Temperature Range:Operates reliably from -40°C to +85°C, suitable for diverse environments. ...
void loop() { float volts = analogRead(IRpin) * 0.0048828125; // value from sensor * (5/1024) - if running 3.3.volts then change 5 to 3.3 float distance = 65 * pow(volts, -1.10); // worked out from graph 65 = theretical distance / (1/Volts) Serial.println(distance); // prin...
irsend.sendRaw(Temp27, sizeof(Temp27) / sizeof(Temp27[0]), khz); //Send signal to set 27*C AC_Temp = 27; AC=true; } if ( Measured_temp != Pev_value) //Change the temperature only if the measured voltage value changes { if (Measured_temp == Desired_temperature+3) //If AC...
GPIO definitions for an ESP32. Change it to the connections between the ESP32 and the SX126x in your specific HW design //ESP32 - SX126x pin configurationintPIN_LORA_RESET =4;//LORA RESETintPIN_LORA_NSS =5;//LORA SPI CSintPIN_LORA_SCLK =18;//LORA SPI CLKintPIN_LORA_MISO =19;...
An additional pin (next to the IOREF pin) is not being used at the moment, but enables new functionality to be implemented in the future without needing to change the pin layout again. Discussion If the power LED does not illuminate when the board is connected to your computer, the board...
float volts = analogRead(IRpin) * 0.0048828125; // value from sensor * (5/1024) - if running 3.3.volts then change 5 to 3.3 float distance = 65 * pow(volts, -1.10); // worked out from graph 65 = theretical distance / (1/Volts) ...
引脚中断可以使用 attachInterrupt,detachInterrupt函数。除了GPIO16引脚,其他引脚都可以使用中断功能。标准的Arduino 中断类型都是支持的:CHANGE,RISING,FALLING。 模拟输入 Analog input ESP8266只有一个ADC通道提供给用户。它可以使用于读取ADC引脚电压,也可使用于读取模块电源电压(VCC)。
By default, the Arduino Uno uses its power supply voltage as the reference. This is supposed to be 5-volts and can be derived either from its USB port or from its internal linear voltage regulator, which is used when the Uno is powered using the barrel connector. These voltages are not ...
aware of the operating voltage of the Arduino pins you will use in your project. Preferably use an Arduino with 3.3V operating voltage. If you are not using a 3.3V version of Arduino, you must use a kind of 5V to 3.3V converter on RST, SCLK, SDIO and SEN (depending on your project...