How do i upload sketch arduino pro mini 3.3v without adapter

[Concealedfox70]

I have a code written in arduino to take rpi digital value and convert it to a pwm signal in the arduino pro mini 3.3v. I have it wired up and is detecting it as ttl arduino from raspberry pi running Ubuntu mate. How do i get it to upload sketches? I don't have to worry about shifting voltage and I thought I could just hook up tx rx and be good to go. I don't have room for a usb cable. What do I do?

[Heater]

Use the serial port (UART) on the Pi GPIO header.

I don't know how the Arduino loader works but it's likely it needs at least one more signal other than TX and RX. It will need a way to reset the Arduino and start it's bootloader.

Hmm.. google is your friend:

"Both the DTR and RTS signal are issued when the Arduino boards needs to be reset."

From here: http://forum.arduino.cc/index.php?topic=292365.0

[Concealedfox70]

Use the serial port (UART) on the Pi GPIO header.

The rpi detects the arduino through ttl but it makes 9 attempts I think and fails to sync. I can get the exact error code when I get home

[Heater]

Don't miss my post above.

[Concealedfox70]

Don't miss my post above.

Don't be rude your original comment just read to tell me something I had already reported doing. I'll look at your updated post

[Heater]

I was not being rude there. I was trying to be helpful.

[Concealedfox70]

I was not being rude there. I was trying to be helpful.

I am a noob to the software side I just know the hardware. And I know nothing about any other data pins besides tx and rx. The link you sent me is a foreign language to me

[Concealedfox70]

arduino... on /dev/ttys0
here is the error code

Binary sketch size: 3,614 bytes (of a 14,336 byte maximum)
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x00
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x00
avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x00
avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x00
avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x00
avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x00
avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x00
avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x00
avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x00
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x00

[DougieLawson]

Have you set the right board model in the IDE?

Have you tried ISCP/ISP
https://learn.adafruit.com/program-an-a ... figuration

[Concealedfox70]

Have you set the right board model in the IDE?

Have you tried ISCP/ISP
https://learn.adafruit.com/program-an-a ... figuration

Yes that was the first thing I tried, it should work if only it was though usb, but it is not. that is the difference