# (SOLVED) serial programming (not in sync: resp=0x30)

**URL:** <https://community.sparkfun.com/t/solved-serial-programming-not-in-sync-resp-0x30/22051>\
**Category:** Arduino\
**Created:** [September 25, 2011, 7:50pm UTC](https://community.sparkfun.com/t/solved-serial-programming-not-in-sync-resp-0x30/22051 "2011-09-25T19:50:47Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![sirbow2](https://avatars.discourse-cdn.com/v4/letter/s/82dd89/32.png) [@sirbow2](https://community.sparkfun.com/u/sirbow2)\
**Post date:** [September 25, 2011, 7:50pm UTC](https://community.sparkfun.com/t/solved-serial-programming-not-in-sync-resp-0x30/22051/1 "2011-09-25T19:50:47Z")

</div>

i bought a arduino 328 from sparkfun that already had the uno optiboot on it: [http://www.sparkfun.com/products/10524](http://www.sparkfun.com/products/10524)

i built it in a breadboard exactly to this: [http://www.arduino.cc/en/Main/Standalone](http://www.arduino.cc/en/Main/Standalone)

but instead of buying one of those expensive-ish FTDI programmers, i used the serial port on my computer with a SP3232E(a MAX232 knock-off) to connect to my arduino TX and RX pins. i know the TX and RX etc are connected right because i can hookup my serial display directly to the SP3232E and write on the LCD from the arduino serial monitor.

so my issue is that it doesnt program correctly. i get out of sync errors in the arduino IDE. i use the DTS from the serial cable and a .1uf cap to reset the arduino automatically during programming. the error:

avrdude: stk500\_getsync(): not in sync: resp=0x30

avrdude: stk500\_disable(): protocol error, expect=0x14, resp=0x51

yes i know this is a common error but i have spent many hours on this and i have tried every tip trick etc. i have triple checked my arduino breadboard for errors.

thanks

---

<div class="post-metadata">

**Author:** ![sirbow2](https://avatars.discourse-cdn.com/v4/letter/s/82dd89/32.png) [@sirbow2](https://community.sparkfun.com/u/sirbow2)\
**Post date:** [September 27, 2011, 1:50am UTC](https://community.sparkfun.com/t/solved-serial-programming-not-in-sync-resp-0x30/22051/2 "2011-09-27T01:50:05Z")

</div>

SOLUTION:

ok it turns out it was WIN7 fault that i got resp = 0x30 error in arduino IDE. i got that even w/o an arduino plugged in. so i tried another computer, presto!

and

i soldered the wires on to the DB9 (pin 5 was on pin 1 etc) and thus the inserted wires were wrong on the breadboard.