My Nomad 883 Classic+ (Model 883.1, serial 234, retrofitted with 9mm belts, energy chains, refurbished spindle, etc) is out of its long hibernation in a storage unit in California. I flashed the Arduino with GRBL 1.1f from the Wayback Machine archive of C3D hex files and have Carbide Motion 649 installed on the host PC.
On connecting to the Nomad I get Please close the door to continue. Now the original 883 did not have a door-closed safety switch. @Julien’s very informative post pointed out that the door safety switch is actually implemented through the feedhold input to the CM board.
Reading through the config.h, I see that this function is implemented by inverting the sense of the feedhold pin. So I have tried jumpering the feedhold pins on the CM board, to no avail. I have re-flashed the Arduino with all the various copies of the 1.1f hex file from the above archive, and all behave the same.
I also tried the various hexes with the Carbide Motion 582 that @robgrz posted a while back in this thread, with no difference in behavior.
Has anyone successfully updated an 883.1 to GRBL 1.1 and made it work? I’ve been backward and forward through the Community here and haven’t found any posts with enough detail to pin down the exact machine and results.
I entered brand new territory (but what’s life about if not that??) and downloaded the 1.1h source code package from the grbl github and compiled it using Rob’s config.h, with the safety door pin commented out. After I finally (after about 10 tries) did that successfully and it was loaded into the Nomad’s Uno board, I entered all the $ parameters, and the Classic+ is up and running under CM649!
And here is the Classic+. I forgot until I unpacked the machine, that I had made a “hybrid table” of sorts by putting clearance holes in an MDF wasteboard to allow access to the threaded table’s holes underneath.
