hi, i want do some serial communication between nodemcu and arduino uno, nodemcu as master , and uno as slave. is it posible to send signal to uno to make ESC brushless motor to spin?
Possibly… but not at all in the purview of this forum as it has nothing to do with Blynk. But you can check out this link and give it a try
But if you already have an ESC for your motor, then just follow whatever it’s manufacturers examples are available and you can probably simply control it directly from the NodeMCU via whatever PWM or equivalent signal they take.