Note that, the same setup with the hc-05 works just fine. The Rx/TX are connected to a 3.3v FTDI, I verified the messages from and to esp in the espexplorer console.īut when I power the esp03 (via same 3.3v regulator, which has a large (1F) in the vin and a smaller capacitor on the vout) from, I get a lot of junk characters in RX/TX readings.Īt first I had the esp03’s RX/TX directly connected to the Arduinos TX/RX. The esp03 is powered from a 3.3v voltage regulator that is connected to I’ve got a few esp03s so I thought why not replace the hc-05 with the esp03? So over the weekend I wrote some lua scripts that reads stuff (string, like r1:100, g3:200 and etc) from a socket and passes the info to esp03’s uart, and the message from the arduino’s uart is passed back to the socket, nothing fancy. I few years back, using hc-05 and Arduino, I hacked together an LED strips controller that I could control with my Android phone, basically I use the Bluetooth module (hc-05 ) to communicate with the Arduino (serial communication, RX/TX -> TX/RX).
So I am not a HW guru like some of you , and I am hoping that someone here can help me to figure out what is going on and how I can fix it.
