Brookwood Design Launches GrblHAL Breakout Board Unkit for the Teensy 4.1

Those features include five-axis control outputs (5V compatible), independent enables for each axis, 10 opto-isolated inputs including all standard GRBL controls and limit switches for all axes, and seven relay outputs (spindle, mist coolant, flood coolant, dust collector, three auxiliary relays). It also offers dust collector relay support (activated by spindle enable), switchable relay coil voltage between 5V and 12V, standard GRBL spindle control outputs, and 0V to10V spindle control output for driving VFDs.

Brookwood Design has launched its GrblHAL Breakout Board Unkit for the Teensy 4.1 microcontroller, which allows users to drive CNC mills, routers, and lathes. Described as an “unkit,” the board comes populated with all the surface mount components already soldered in place, while users will have to solder the through-hole components to complete the board. When combined with a Teensy 4.1, the breakout board forms the basis of a motion control system, in which Brookwood states provides advanced features that would cost hundreds more on similar platforms.

Rounding out the feature set are added screw terminals for most I/Os, four EMI protected digital inputs, an I2C header, an EEPROM footprint, LED indicators, a USB port, Ethernet, and a serial I/O header. Brookwood Design is currently selling the GrblHAL Breakout Board Unkit on Tindie for $25.99, which comes with all the components (including a Teensy 4.1) needed to get up and running. They’ve even linked the source code and design files for those who would like to build their own.