SLR Sky Tracker

thingiverse

SLR Sky Tracker Instructions 2/18/2017 B. Gonzales Bill of Material in PDF Available for Download All necessary parts can be sourced from McMaster Car, Amazon, and Stepper Online The project uses the PrintRBot Revision F Board, with source code and executable files included Instructions on compilation and downloading are easily accessible online Audrino 1.0.5 R2 is used for the AT90USB1286 Firmware Firmware steps at a rate of 18.07 steps per second, utilizing a simple PID loop to achieve floating point step count accuracy One switch controls forward movement at maximum speed, and another switch controls backward movement at maximum speed Resetting the position to start requires triggering these switches by grounding Port Pins E0 and E1 These pins are located on U6 and route through EXP2; users can solder directly to the holes or install a header The pin order is not clearly defined by the schematic, but it appears incorrect on the board print Users are advised to verify the correct pin using an ohmmeter from U6 to the header Have Fun Printing! Print Settings for the Big Box E3D Printer: Printer: Big Box E3D Rafts: No Rafts Are Needed Supports: Supports Are Built In Resolution: .2 Resolution Is Achieved Infill: 25% Infill Density