servo

问题 Multiple libraries were found servo.h error. Please help to fix. I am getting this error: Error: Arduino: 1.8.5 (Windows 8), Board: "NodeMCU 1.0 (ESP-12E Module), 80 MHz, 4M (3M SPIFFS), v2 Lower Memory, Serial1, None, Only Sketch, 115200" Smart_Door:20: error: 'servo' does not name a type servo.attach(2); // attaches the servo on GPIO2 to the servo object ^ Multiple libraries were found for "Servo.h" Used: C:\Users\Deepak\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.4.1

问题 Got this board cheap from Banggood, but there are minimal details on how to use it. There is a manual here https://www.gitbook.com/book/smartarduino/user-manual-for-2-way-motor-16-way-servos-shield/details , but it is a long way from detailed, and what I need are some details on how to drive the I2C PWM servos. 回答1: After some poking around, I have a partial answer. The Adafruit libraries seem to work fine for the servos. https://learn.adafruit.com/16-channel-pwm-servo-driver/using-the

问题 Asked question master, how to coding in arduino for controlling servo using android via bluetooth? Code below does not work, servo only runs between 48 - 56. #include <SoftwareSerial.h> #include <SoftwareSerial.h> #include <Servo.h> Servo servo; int bluetoothTx = 10; int bluetoothRx = 11; SoftwareSerial bluetooth(bluetoothTx, bluetoothRx); void setup() { servo.attach(9); Serial.begin(9600); bluetooth.begin(9600);} void loop() { //read from bluetooth and wrtite to usb serial if(bluetooth