Seriously Mark.
You could have cashed in and knocked out a control box ages ago, but YOU and the Team took your time, learned an awful lot just by biding your time, and listening to what was happening around you. You knew there was no point in making something that was just going to come back at you time and again.
However, we know this is how Openbuilds works all the time.
You guys are so Good!! It's a pleasure to be associated with you.

 

micro usb is the pits... type C baby!

 

This thing looks so simple to connect everything up. I need to do another build so I can use it. I did notice something missing. I could not find a servo input for the eggbot.

 

Just like ALL the other controllers we already stock... also STRONGER (these things arent sitting on a nice display case, their going in the garage next to dust, moving machines etc. Type C ports clog up with dust too quickly. Ask us how we know (;

No, two different things. This runs Grbl (no need for Mach 3 - what Mach does is already on this board)

Officially 24v. Between us Engineers, (; +-24v (i am not saying it out loud *cough* The included fan is 24v (but replaceable). Capacitors, Buck Converter, Drivers etc should handle 36v. The XL1509 Buck converter can handle 40v, that's about the lowest rated component on the board) *cough*
NB OFFICIAL WARNING: We won't be responsible if you try it and it blows up. We have not done any real testing at anything over than 24v - with deadlines there wasn't much time to test outside the requirements envelope... Now that it's released -- time should clear up a little

Earlier prototypes had a dedicated 3 pin header but we had to compromise something! Those sides are small (must fit onto 80mm wide cbeam/vslot) so with the space we had to play the "what stays and what goes" game. As Servo's under Grbl just run off the PWM pin anayway, and it is available on the Toolhead plug, you can still run a servo, just not "plug in" style. Snip the plug off, put the signal and gnd wires into the TOOLHEAD plug (PWM and GND) and wire up 5v from somewhere to power the servo

The design spec here is a little different from other boards. It focusses on the "new" users, new to CNCs, new to electronics. From our years of experience of handling the support end of this world, we know that "measure your vref" is way harder for a beginner to understand. Therefore, we instead opted to write our documentation in a way someone who has not used a machine, can understand. The method recommended works! We've been replying that to support emails for years with no complaints. If you are super advanced, you'd probably not be looking at a beginner friendly controller setup? (;

We actually did have a 3 pin connector (Some of the "leak" pictures in the other thread might still show that hehe) but again, due to space, we had to consolidate (0-10v was more useful!) so we went with a SPST instead. We also couldn't come up with a use case you are going to need both. Instead if you really need a inverted output you can always invert the pin in Grbl config with a simple recompile (;

Standard grbl: See How to change PWM Frequency. · Issue #1398 · grbl/grbl if you need a different freq

 

Officially 24v.

 

8 bit, grbl

Drivers are more silent than drv8825s. (; doesnt make the spindle and endmill chipping away at material any less loud though, motor noise isnt what bothers the neighbours

 

Its not. But firmware man
Invert the logic... Easy

 

(; that page of the documentation is still a draft here on my end. Theres a logic gate on the rx/tx pins. When usb is plugged in, the chip connects the atmegas rx/tx to the ftdi. When you unplug usb, it connects the atmega rx/tx to the header pins. So to use them, unplug usb and wire up your 'gadget' (5v in/out so make your own level shifter if the gadget isnt 5v).

Some ideas for things you can connect:
Arduino running xpix xlcd
Esp8266 running esp3d grbl version
Esp8266 running esplink
Rpi via gpio serial running OpenBuilds Control
Etc

 

Oh and since the Xbox360 controller doesnt talk serial.... that's obviously out for the header.... But not out for Software: see Gamepad / Keyboard Shortcuts · Issue #20 · OpenBuilds/SW-Machine-Drivers