1

I noticed after printing my 1st part the height was slightly higher that the CAD model and the X and Y were smaller than the CAD model.

How and what is the best way to calibrate the scale?

2

Edit the steps per mm according to your hardware. You can use calipers to measure the distance the carriages actually move compared to what you told it to move. Divide what you want by what you got and add or subtract the step value that make up the difference to your firmware. Or use an online calculator.

3

Issue I have at the moment is I can’t connect the 3D Printer to the PC even though the Com1 port is visible. I’m running windows XP and keep getting this using ReplicatorG 0040

Read timed out

Packet timed out

so without being connected I can’t alter anything in the firmware.

4

OK I have now sorted out the connection. Looks like the lead supplied is faulty, or it could be it is too long and causing coms problems because its a cheap lead.

5

I am unfamiliar with this electronics. I will say though, that always when I’ve made a mistake I’ve had to replaced the Arduino. That is why I like the RAMPS board, I can fix it easily.

6

you must disable the makerbot desktoo service before you can connect with any other software