Auto level sensor - i just cant get it to work

[Gareth B]

Hello
I have been through all the threads on this topic but none have solved my issue.
Geeetech I3 Pro B printer GT2560 board, and http://reprap.org/wiki/RepRapDiscount_Smart_Controller


I have checked the solder points - all ok

When i use Auto Home from my control box The extruder nozzle goes to the middle of the bed. It goes down and collides with the bed (and keeps going) . My sensor does not deploy!

When I turn on the power it extends itself 2 times but not 3 times. The LED goes off after that. No alarm. M280 P0 S10, M280 P0 S120, M280 P0 S160, M280 P0 S90 all DO NOT WORK at all.

It is frustrating

I have tried
A- manually editing the original firmware as per the instructions - when i do this i get the "LCD error as per the image" when i try to compile. if i ignore this error and upload then the LCD screen is all black. (with Arduino 1.0)
B -using the supplied firmware here - viewtopic.php?f=27&t=18263 . i get the same error as in A (with Arduino 1.0)
C -using the firmware by NiclasO - viewtopic.php?f=20&t=18437 this compiles and uploads with Arduino IDE

I have resoldered the 3 pin connector and rechecked- no issues.

What i would like is to use the firmware that is original by William here viewtopic.php?f=27&t=18263 and why will it not compile but says the error below?

[William]

So weird...The firmware in that post worked fine on my computer

[Gareth B]

it seems the firmware compiles when i ADD // in front of use auto bed levelling, and wont compile as soon as i remove the //

so the issue must be something that is being called with that statement.

[Gareth B]

OK

i was using wrong arduino- needed to be 1.0.1

i cna now compile the firmware BUT - the sensor still wont work as per original post

it turns on and self tests
remains in UP position with LED off
x homes correctly]
y homes correctly
Z - tries to go down too low - the sensor does not stop Z- direction.

no manual codes are recognized by the probe

any ideas? (thanks Bang for pointing out the wrong arduino version)

[bang]

OK

i was using wrong arduino- needed to be 1.0.1

i cna now compile the firmware BUT - the sensor still wont work as per original post

it turns on and self tests
remains in UP position with LED off
x homes correctly]
y homes correctly
Z - tries to go down too low - the sensor does not stop Z- direction.

no manual codes are recognized by the probe

any ideas? (thanks Bang for pointing out the wrong arduino version)

If your sensor can't make response to the four rows of commands,then your wiring(the orange one) may have a problem or your soldering has a problem.