arduino uno code upload error

Projects Programming
1

Hi All,

I am new to arduino and was trying a simple project using bluetooth and 8 relay module.

The 8 Relay module's VCC and GND is connected to +5V and GND of arduino respectively, and HC5 bluetooth's RX and TX is connected to Arduino's RX and TX along with it's VCC and GND to +3.5V and GND of arduino respectively.

Using Arduino IDE when i try to upload the code, I am getting the following error

Global variables use 420 bytes (20%) of dynamic memory, leaving 1628 bytes for local variables. Maximum is 2048 bytes.
C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avrdude -CC:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf -v -patmega328p -carduino -PCOM3 -b115200 -D -Uflash:w:C:\Users\HP-PC\AppData\Local\Temp\arduino_build_124443/sketch_oct28b.ino.hex:i

avrdude: Version 6.3-20190619
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2014 Joerg Wunsch

System wide configuration file is "C:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf"

Using Port : COM3
Using Programmer : arduino
Overriding Baud Rate : 115200
AVR Part : ATmega328P
Chip Erase delay : 9000 us
PAGEL : PD7
BS2 : PC2
RESET disposition : dedicated
RETRY pulse : SCK
serial program mode : yes
parallel program mode : yes
Timeout : 200
StabDelay : 100
CmdexeDelay : 25
SyncLoops : 32
ByteDelay : 0
PollIndex : 3
PollValue : 0x53
Memory Detail :

Block Poll Page Polled
Memory Type Mode Delay Size Indx Paged Size Size #Pages MinW MaxW ReadBack

eeprom 65 20 4 0 no 1024 4 0 3600 3600 0xff 0xff
flash 65 6 128 0 yes 32768 128 256 4500 4500 0xff 0xff
lfuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
hfuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
efuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
lock 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
calibration 0 0 0 0 no 1 0 0 0 0 0x00 0x00
signature 0 0 0 0 no 3 0 0 0 0 0x00 0x00

Programmer Type : Arduino
Description : Arduino
Hardware Version: 3
Firmware Version: 4.4
Vtarget : 0.3 V
Varef : 0.3 V
Oscillator : 28.800 kHz
SCK period : 3.3 us

avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.00s

avrdude: Device signature = 0x1e950f (probably m328p)
avrdude: reading input file "C:\Users\HP-PC\AppData\Local\Temp\arduino_build_124443/sketch_oct28b.ino.hex"
avrdude: writing flash (2640 bytes):

Writing | ###########avrdude: stk500_loadaddr(): (a) protocol error, expect=0x14, resp=0x45

avrdude: stk500_paged_write(): (a) protocol error, expect=0x14, resp=0xfc
###avrdude: stk500_cmd(): programmer is out of sync
avrdude: stk500_cmd(): programmer is out of sync
avrdude: stk500_recv(): programmer is not responding

=====================================

If I remove the TX and RX from the module and then upload the code, then the code is uploaded but post that when I connect TX and RX and connect bluetooth using phone and pass a command, the relay is unresponsive. I have selected correct port and board in the IDE. How can i resolve the above error while the TX and RX lines are connected to the module. The relay is also working fine. I checked it by connecting the GND from module to every pin of the relay.

Thanks in advance
Ajinkya

2

If I remove the TX and RX from the module and then upload the code, then the code is uploaded

You have not posted your code but it sounds like you have used pins 0 and 1 in your program but they are used by USB serial so cannot be used as IO pins at the same time

Please post your code

3

HC5 bluetooth's RX and TX is connected to Arduino's RX and TX

Does that mean that you have connected RX to RX and TX to TX?

I used a software serial port for the Bluetooth module when I was experimenting with the HC05 so as not to conflict with program upload and viewing output over the hardware serial port.