I have the ROSTOCK V1 and I am happy with it. I am considering the use of a height probe for auto calibration of the plate height (not the delta calibration procedure).
Does any one know what is needed:
In term of hardware
Firmware to work with the RAMBo controller
Basically, I want to build the height probe and need to know what I need to get the whole thing working.
You'll need some form of probe/sensor. The more repeatable, the better. I'll go ahead and list them in terms of ascending order of goodness for you.
Offset mechanical
offset inductive/capacitive
mechanical centered
IR
capacitive/inductive centered
Accelometer
FSR
Now, they range widely in cost, and difficulty to use. The FSR option is rather simple (Jumpers and endstop cabling, all contained in the baseplate), but more expensive and needs a reasonably calibrated machine to produce parts, for example. Other options, like mechanical, are really cheap, and pretty easy to do, but need more wiring to the hotend, and are less precise. Overall, I personally would go for either the accelometer or FSR for use with the Rambo.
You'd have to hack up the ERIS firmware (It's on github, I may find a link for you shortly) for the V1, both for parameters, and in the case of FSR's, for the probe communication method (The accelometer is what the ERIS uses). But the accelometer and HE280 hotend aren't really supported for the Max yet, so you might need to do some hacking, and the assembly is 100$ right now (Hotend, circuit board, effector), and would need to wire the probe down to the Rambo's SPI pins.
Machines:
Rostock Max V2, Duet .8.5, PT100 enabled E3D V6 and volcano, Raymond style enclosure
Automation Technology 60W laser cutter/engraver
1m X-carve router
I am greatfull to your quick and comprehensive response.
I may have build my MAX V1 some years back- but I heavily moded it to poses magnetic joints at the end of the arms that connect to the cheapskates and effector. This makes it rather easy to change the end effector with multiple interchangeable heads.
I will explain: Once I have the rostock all lined up and calibrated, I can set the head at the z=0 position (when the tip hits the bed) and then just replace it with 2nd effector but this effector has some "play" so it lets me slip the head (or anything ales I need) into it until it hits the bed! then I lock the head to the effector and there I have me a 2nd effector with a different head that is aligned perfectly with the bed! Once this is done I have me a perfectly aligned head ready to be exchanged within minutes.
This process only needs to happen once per head!. Next, I figured, I can have one of these heads implement a sensor (instead of a hot head) for bed alignment. I know that there is a slight ridge at the left side of the bed and would like to have the printer compensate for it at print time.
This however still need the proper firmware support (...I have no knowledge how to do...) and proper supported connection to the RAMBo card (something I think you may know something about).
What I think I need is:
Create the mechanical sensor ( any one of your suggestions above )
Upload the proper "additions" in the firmware onto the RAMBo
Connect it to the RAMBo card
At this time I unsure of any of these steps and I look forward your input to proceed with the project