Video #257: Serial Wireless Comms for Arduino (et al) - GitHub
The JDY-40 is a Bluetooth 4.0 module based on the CSR8510 chipset. It supports a wide range of Bluetooth protocols, including SPP (Serial Port Protocol), HID (Human Interface Device), and more. The module operates at a frequency of 2.4 GHz and has a maximum data transfer rate of 1 Mbps. jdy40 arduino example best
bool sendCommand(String cmd) jdy40.println(cmd); unsigned long timeout = millis() + 500; while (millis() < timeout) if (jdy40.find("ACK")) return true; Video #257: Serial Wireless Comms for Arduino (et