I’ve never seen re-arm and RAMPSXB used together, but I guess nothing says they cant; if it works for the regular RAMPS, it should work with RE-ARM, since the RAMPSXB schematic is literally just copy and pasted from the RAMPS schematic.
You used to be able to purchase RAMPSXB Boards through RepRap.me, but they stopped selling them. As of now there are sadly no resellers I know of, and they’re not common enough for China to pick them up. if you know of any companies that would be interested in making them, let me know.
Hi, I like your Ideas 😉
Maybe one more to check: for tool change in 3d printer will be perfect to share stepper driver, (and thermistor & heater interface)… but I have no idea hot to design such switch… What do you think?
I do know there are toolchanging 3D Printers out there that were all the rage in 2019. It’s a cool concept, but the more moving parts there are, the more that can go wrong.
The voltage divider is a way of measuring resistance, since ADC’s cant measure resistance directly. For a 5V, 10-bit ADC like the traditional Mega, it returns a number between 0 and 1023 based on the voltage from 0 to 5V. The Due uses a 12-bit ADC, but it can only take 3.3V, so the upper half of the thermistor range is dangerous to the Due.
LV on this diagram means “low voltage”, since the ADC on the Due can’t take 5V. I don’t entirely trust a standard logic level shifter for analog stuff, so the thermistor voltage dividers take the 0-5V thermistor signals from the RAMPS board (THERM0-2) and squish them into a 0-3.3V output (LV_THERM0-2) so the due can read them at their whole range without getting fried.
Scott how are you doing? I saw your presentation on MattHacker. Im hoping we can Network.
Could the RAMPSXB work with a RE-ARM and RAMPS 1.6+ combo? I’m fiddling with Marlin 2.0 and I wan’t to step up to 32-bit with Marlin. Ideas? Thanks!
Hi scott,
Just keen to find out where to purchase a RAMPSXB shield? where cab I buy through?
Im running the E3D Karaken on my printer build and really keen to run ramps/re-arm/RAMPSXB mix.
cheers
Jason
I’ve never seen re-arm and RAMPSXB used together, but I guess nothing says they cant; if it works for the regular RAMPS, it should work with RE-ARM, since the RAMPSXB schematic is literally just copy and pasted from the RAMPS schematic.
You used to be able to purchase RAMPSXB Boards through RepRap.me, but they stopped selling them. As of now there are sadly no resellers I know of, and they’re not common enough for China to pick them up. if you know of any companies that would be interested in making them, let me know.
Is anyone interested in a complete Z402 Machine? Shipping from Sweden Regards Chris
Hi,
we are interested in the software of the Z402.
Thanks
What do you want to know?
Hi I lobe the wrist phone case design. How could I configure it for a galaxy note 10
Hi, I like your Ideas 😉
Maybe one more to check: for tool change in 3d printer will be perfect to share stepper driver, (and thermistor & heater interface)… but I have no idea hot to design such switch… What do you think?
I do know there are toolchanging 3D Printers out there that were all the rage in 2019. It’s a cool concept, but the more moving parts there are, the more that can go wrong.
hey,
Working on my own Arduino DUE project.
Saw your RAMPSDC on GITHUB, was hoping I can get some advice regarding thermistors @3.3v
I understand the concept of the voltage divide, just been trying to work out where/how to apply it.
can changes you can share an image of the circuit
The voltage divider is a way of measuring resistance, since ADC’s cant measure resistance directly. For a 5V, 10-bit ADC like the traditional Mega, it returns a number between 0 and 1023 based on the voltage from 0 to 5V. The Due uses a 12-bit ADC, but it can only take 3.3V, so the upper half of the thermistor range is dangerous to the Due.
Here’s the schematic so far: http://scottziv.com/wp-content/uploads/2021/08/dcimage.png
LV on this diagram means “low voltage”, since the ADC on the Due can’t take 5V. I don’t entirely trust a standard logic level shifter for analog stuff, so the thermistor voltage dividers take the 0-5V thermistor signals from the RAMPS board (THERM0-2) and squish them into a 0-3.3V output (LV_THERM0-2) so the due can read them at their whole range without getting fried.
That make sense?