Hello, this is my first post on these forums. i have been recently been building a mendel reprap with techzone electronics i have attempted to install the firmware but have become stuck. avrdude: stk500_getsync(): not in sync: resp=0x00 avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51 is the error message as i try to upload, i think everything is correct (com port etc) i have tried: waiting 10 seconds once hitting upload then pressing reset. pressing reset then hitting upload almost instantly after. trying different USB ports. the techzone reprap wiki page is currently a mess and is no help at all. [reprap.org] the only thing i think it might be but unable to test is the jumper that was mentioned in non techzone motherboards. i was not supplied with one so assumed not needed. but if it is needed i am not sure where to put one. I assume its on the row of 10 pins on the right. any clues? Thanks. https://reprap.org/forum/read.php?13,63518,63518#msg-63518 Sat, 08 Aug 2026 11:52:44 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?13,63518,76124#msg-76124 https://reprap.org/forum/read.php?13,63518,76124#msg-76124 wiki.]]> brnrd Controllers Mon, 07 Mar 2011 01:16:53 -0500 https://reprap.org/forum/read.php?13,63518,76118#msg-76118 https://reprap.org/forum/read.php?13,63518,76118#msg-76118
which board do you pick on the Arduino software for the Techzone v1.2 Remix?

I have the green light on and the red light is just constantly blinking. I have not been able to get it to do anything else. My main goal is to upload the 'Blink' example to see if I can get one of the lights to blink at a different rate.

http://www.youtube.com/watch?v=3FV2P58FmEQ]]> sxt173 Controllers Sun, 06 Mar 2011 22:58:12 -0500 https://reprap.org/forum/read.php?13,63518,64314#msg-64314 https://reprap.org/forum/read.php?13,63518,64314#msg-64314
I've been thinking of going one of the pololu routes like the arduino mega shield. Good luck.]]> Anthong Redbeard Controllers Wed, 20 Oct 2010 14:13:37 -0400 https://reprap.org/forum/read.php?13,63518,64312#msg-64312 https://reprap.org/forum/read.php?13,63518,64312#msg-64312 Skoll Controllers Wed, 20 Oct 2010 13:36:40 -0400 https://reprap.org/forum/read.php?13,63518,64252#msg-64252 https://reprap.org/forum/read.php?13,63518,64252#msg-64252
you can try with the arduino app, have to install libs for sanguino and select it. It has the same reset button communication quirks as the extruder.

If you lose all hope I'd be willing to play with it if you send it. Can;t lose anything if you think it's dead.]]> Anthong Redbeard Controllers Tue, 19 Oct 2010 22:27:25 -0400 https://reprap.org/forum/read.php?13,63518,64244#msg-64244 https://reprap.org/forum/read.php?13,63518,64244#msg-64244
But still no luck with the MB,

It is getting power the other red light is not coming on at all. all the connections are fine.

i think i broke it when i turned the power on from the 12volt power supply when everything was connected together. (stepper drivers + extruder)

is there any sure way of checking if the MB is broken or not?]]> Skoll Controllers Tue, 19 Oct 2010 21:53:55 -0400 https://reprap.org/forum/read.php?13,63518,64071#msg-64071 https://reprap.org/forum/read.php?13,63518,64071#msg-64071
so 1ft make sure your ttl cable is good, check every pin.

next try various combinations of pressing the reset button on the board and the upload button on the software. What seems to work for most people is to hold the reset button, press the upload button then let go of the rest button.

BTW... on my setup at least the board gets pwer from the usb cable... if you have evrtyhing else unplugged and the usb cable is not lighting the power led something is wrong, most likely the cable or you have it upside down or something.]]> Anthong Redbeard Controllers Mon, 18 Oct 2010 00:14:12 -0400 https://reprap.org/forum/read.php?13,63518,64059#msg-64059 https://reprap.org/forum/read.php?13,63518,64059#msg-64059
Had issues installing firmware on MB
-connected TTL/USB directly to MB, issue seemed to have disapeared, it seemed to install correctly with blinking red light and then repativly blinking at 2hz.

finished wiring up power supply to stepper drivers / extruder turned them on

1 of the motors seemed to be active and had motor lights blinking so turned off.

disconnected all wires.

attempted to install extruder firmware via 6 ribbon cable from TTL/USB seems to have done nothing no lights on for indication and had sync error message.

connected back to MB and noticed there was no blinking 2hz light anymore. attempted to reinstall firmware with replicatorg (which i have to say is a much better programme to use if some one is not familiar with audrino) and still have failed sync errors.



things i have also tried.
- reset button trick
- plugging in cable and hitting upload instantly]]> Skoll Controllers Sun, 17 Oct 2010 19:28:06 -0400 https://reprap.org/forum/read.php?13,63518,64049#msg-64049 https://reprap.org/forum/read.php?13,63518,64049#msg-64049
anyhow...

yes you can blow your mainboard. but lets no conclude that yet.

it IS recommended to have nothing connected when you upload. I have a toggle switch for the power to the rest of the system that I switch off when I'm doing stuff lik that.

USB power should be all you need for the mainboard when uploading. In fact, I don;t supply power to the mainboard at all except through the usb cable.

just in case... you need to connect the cable and usb adapter to the extrtuder board to upload extruder firmware.

Youll need to troubleshoot this methodically and slowly, a piece at a time. keep a log of what works and doesn't so you can logically figure out the gaps.

Also, did you switch to replicatorg ? Like I said it has better communication / retries built in.]]> Anthong Redbeard Controllers Sun, 17 Oct 2010 17:18:47 -0400 https://reprap.org/forum/read.php?13,63518,64044#msg-64044 https://reprap.org/forum/read.php?13,63518,64044#msg-64044
is it possible to blow out the motherboard if something was wire incorrectly? it was connected to the motors that was powered on. and the extruder.

this is proving rather frustrating :(

i can;t seem to get the extruder to install either.

do you need to supply 12 volts of power to the extruder for it to install?]]> Skoll Controllers Sun, 17 Oct 2010 15:50:02 -0400 https://reprap.org/forum/read.php?13,63518,63824#msg-63824 https://reprap.org/forum/read.php?13,63518,63824#msg-63824
1. definitely make sure your cable is made right with the ribbons jammed all the way into the connector, you can't be shy with those things.

2. I know some people don;t have it but my mainboard has a jumper near where the serial cable connects, without that jumper the board doesn;t get power... if yu have solder across 2 points there instead you have a pre-installed jumper :)

3. TRY the replicator G suite of software, you don't have to keep it, but it will at least give you some peace of mind if it works. My communication problems simply went away when I switched to it. I never have to time my resets or mess with anything it retries till it works. If you try this software you MUST install their firmware as well.]]> Anthong Redbeard Controllers Thu, 14 Oct 2010 23:15:12 -0400 https://reprap.org/forum/read.php?13,63518,63755#msg-63755 https://reprap.org/forum/read.php?13,63518,63755#msg-63755
A stopgap I found to make a guaranteed good connection for testing is to put six jumpers on the six pins of the motherboard and then put the usb adapter's pins into the other side of the jumpers.]]> jsadusk Controllers Thu, 14 Oct 2010 12:25:40 -0400 https://reprap.org/forum/read.php?13,63518,63523#msg-63523 https://reprap.org/forum/read.php?13,63518,63523#msg-63523 Skoll Controllers Tue, 12 Oct 2010 17:15:55 -0400 https://reprap.org/forum/read.php?13,63518,63519#msg-63519 https://reprap.org/forum/read.php?13,63518,63519#msg-63519
Make sure the green led is solid on the motherboard.
Check the cable continuity with a multimeter to make sure all of the pins have good contact through the cable.

Here is a diagram of how i've wired my tech zone electronics. Techzone wiring]]> ensgrp Controllers Tue, 12 Oct 2010 16:42:47 -0400 https://reprap.org/forum/read.php?13,63518,63518#msg-63518 https://reprap.org/forum/read.php?13,63518,63518#msg-63518
i have attempted to install the firmware but have become stuck.

avrdude: stk500_getsync(): not in sync: resp=0x00
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51

is the error message as i try to upload, i think everything is correct (com port etc)


i have tried:

waiting 10 seconds once hitting upload then pressing reset.

pressing reset then hitting upload almost instantly after.

trying different USB ports.

the techzone reprap wiki page is currently a mess and is no help at all.
[reprap.org]


the only thing i think it might be but unable to test is the jumper that was mentioned in non techzone motherboards. i was not supplied with one so assumed not needed. but if it is needed i am not sure where to put one.

I assume its on the row of 10 pins on the right.

any clues?


Thanks.]]> Skoll Controllers Tue, 12 Oct 2010 16:27:56 -0400