arduino nano

Other Hardware 3rd Party Boards
1

I have a arduino nano with a ch340c ic. Apparently the ch340c has no 12mHz connections what are the implications of this.

2

Can you upload to the Nano?

3

I have problems with software serial. Unable to access Bluetooth AT commands but works fine with aruino uno using the same program.

4

CH340 isn't involved in software serial. What baud rate are you using for software serial (set via the begin() function).

5

#include <SoftwareSerial.h>

SoftwareSerial BTSerial(10, 11); // RX | TX

void setup() {
pinMode(9, OUTPUT);
digitalWrite(9, HIGH);
Serial.begin(9600);
Serial.println("Enter AT commands:");
BTSerial.begin(38400); }

void loop() {
if (BTSerial.available())
Serial.write(BTSerial.read());

if (Serial.available())
BTSerial.write(Serial.read());
}

This program works fine for Arduino Uno but not for nano.

6

OK, 9600 should work fine. Higher baud rates can be unreliable with software serial.

7

Thanks for your help. I will try lowering the software serial baud rate when using the Nano. However I am all set up for using the Uno for the present.