Uno and Nano) or ATmega2560 (Mega) micro controllers. The Estlcam controller software can be installed on boards with with ATmega328 (e.g. The cable was also convenient for shielded 24v and ground pairs between the power supply and drivers - 2 x 22awg = 19awg. driver step/gnd and dir/gnd) all the way to the adjacent signal/ground terminals on the shield. The cable allowed shielded signal/ground pairs from all external components (e.g.

I used two shielded pair 22awg sound/security cable for everything not in the drag chain. While the cause could have been a single bad connection, I decided to rewire everything with shielded cables. The motivation was Estlcam USB errors, which it appears can be caused by any signaling/wiring/EMI issue. The primary purpose of the design was having the signal and ground terminals next to each other to maximize shielding and minimize mess (not possible w/ a basic screw shield). Especially on the crowded top row, using crimp ferrules makes it much easier to (re)hook things up reliably. While I had been using pins and plugs and was planning on upgrading to latching plugs, the layout seemed to work better with screw terminals (the driver gnd pins/plugs were an as-built change). While I have no need for them, I may add a daughter board for isolated limit switches (via 6 pin stacked header). The pictured Nano shield ( w/o Nano) is the latest and currently supports drivers, probe, DC-AC relay/VFD run and VFD speed - all but the probe are isolated via external optocouplers (e.g. With no relatively inexpensive Estcam (or GRBL) pinout shields available to the US I've been making my own.

After that the sensor will automatically adjust the Z-axis zero point after tool change probes. After touching off of the tool length sensor, the material top also needs to be touched off (probe menu). Note: After the touch off, Esc does nothing and the message will only go away when you do something else (v11.244). When you move the tool over the sensor and click the icon, the tool will automatically travel down, touch and retract - unless you hit Esc.

Warning: Unlike other probe options, the Z-axis will start moving when you click the icon. Locating (mounted or not) the sensor relative to the project origin/0,0 point is also possible. A fixed position mount point requires homing be enabled. As with all probing functions, the default speed is (should be) 60mm/min - slower may produce more accurate results (untested). To setup the sensor go to Setup : CNC controller : Length sensor. It also allows for changing tools after the surface of the material is machined off.

Using the one click automatic tool length measurement function speeds up and simplifies tool changes because no probe menu navigation or manual touch off is required. As with any Estlcam probe function, the probe plate can be a simple piece of aluminum (tape) attached to the probe wire.

Estlcam carve