Problem to upload sketch trough bluetooth.

Development Boards Arduino
1

I have problem to upload this sketch to Arduino Uno trough bluetooth. I have tried both 57600 and 115200 baud rate.

#include <SoftwareSerial.h> 
int bluetoothTx = 0;  // TX-O pin of bluetooth mate, Arduino D2
int bluetoothRx = 1;  // RX-I pin of bluetooth mate, Arduino D3

SoftwareSerial bluetooth(bluetoothTx, bluetoothRx);
int led = 13;
void setup() {
  Serial.begin(9600);  // Begin the serial monitor at 9600bps
  bluetooth.begin(57600);
  pinMode(led, OUTPUT);

}

void loop() {
 digitalWrite(led, HIGH);
 delay(1000);
 digitalWrite(led, LOW);
 delay(1000);
}

I’m using following bluetooth module, SparkFun Bluetooth Modem - BlueSMiRF Silver.

It seems to connect but after a while following error message appears and the connection is lost.

Arduino: 1.8.13 (Windows 10), Board: "Arduino Uno"

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x28
avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x28
avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x28
avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x28
avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x28
avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x28
avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x28
avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x28
avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x28
avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x28
avrdude done.

Can someone help me with this problem?

2

I believe the only baud rate that works for uploads on the Uno is 115200 but you might double check that.

Also, your board has a bootloader that allows you to upload new sketches and that only is active for a brief moment after the board resets. You need to reset the board immediately before sending the new sketch and have to start the upload before the bootloader times out.

3

Also, this might come in handy:

https://www.instructables.com/id/Overvi … cess-and-/

:slight_smile:

4

As a newbie to Arduino, your info gave me the final pieces of the jigsaw puzzle that I needed to allow program uploading via blue tooth. Many thanks.

Using the direct command to avrdude via the Windows command prompt was the final bit I needed.

Caso queiram aprender mais sobre a plataforma Arduino, eu recomendo extremamente o site do Flávio Babos: flaviobabos.com.br/ e o artigo o que é arduino: https://flaviobabos.com.br/arduino e tudo sobre a plataforma.