I have a few small projects I would like to use some steppers on. Of course I would like them to be headless. Marlin is a plus as I can really quickly tweak it to my needs. So using the ZenXY as an example of a good use case, What do you suggest?
Jeffeb3 has this nice setup to consider. This would be controlled from a smart phone and looks to cost about just under $50 winner so far
I am still using the prontoneer pi board on my low rider. It works great with grbl and cnc.js.
I know the esp board has WiFi, but I’m not certain there’s software written for it. If love to experiment with something like that, especially for a zxy like project. This might be a good winter project for me.
Feels like I am missing something. Are there really no other decent options for really low cost? I guess a nano and a pololu could work for my single stepper belt feeding machine, a few buttons but no screen needed. Maybe another custom pcb!?
Hopefully the Marlin RTOS will end up working on the esp, I can’t find the board they were testing it on. That does seem like a real cool board. especially the one with the oled…
And this one with a battery wifi and oled. power goes out…pause and wait to resume…oh the possibilities. This board seems very exciting. The shield doesn’t seem to have reverse current protection from the steppers.
When we doing that pcb work, I looked at a huge thread talking about running full fledged Marlin on an esp32. The problem was the number of pins. There are plenty of peripherals, but only so many pins and 6 of them are input only. They were ending up with a port expander chip, and then I wonder if it makes sense anymore.
For your purposes, it would be fun. But it’s not the same as arduino. You’ll have to learn some more. It is awesome though.
Do you think other people will want it? If it’s just a one off, I think any arduino and a drv8825 would be good. You could either use a serial bluetooth module or connect via usb and send serial commands or wire in a knob and lcd (how many full graphic lcds do you have right now?). It seems like gcode is a mismatch for a belt counter.
Are you sure you don’t want a machine with two motors? One to count and one to cut? Then you give it a twitter account and when you’re filling out orders, you just dm it “@heavyweightchampionofthebelts 2.2m”.
So easy though. Had a friend over and made a prototype and ran it in under an hour. A cutter would be nice, I need a small lazy susan to keep it tangle free. and then update from there. The way I do it currently without the belt counter is comical.
Yeah a better board with genuine pololu’s might be the solution.
I like it. I think I will give it a bit longer before I jump in.
Lil tangent, What is the least expensive pi that the v1pi will run on? I am taking some notes and want to update some info. For controls we have a computer hardwired, LCD/sd, or V1Pi. The Archim boards have an SD built in but honestly I am not sure how you would use it.
Yeah, I’m not sure if the webcam would work with a zero. The interfece is noticeably slower on a zero than a 3. But it does work on a zero W (I’ve been running it on one of my printers). FTR, I only have zero W.
I think you’ll still need a USB OTG cable if you’re connecting to a mini-rambo/rambo. And You’ll either need a separate power adaptor, or power it over the 5V pins (so a wiring harness). Or are you talking about the prontoneer pi board? It might not need a USB OTG or separate power adapter. Mine is old, but I have a full sized pi, and I power it separately. In fact, IIRC, the arduino gets it’s power from the pi, not the other way around.