drawbot

Journal

18/5/25 time spent: 1 hr - repo created, organized it - made pr to highway repo - made bom - found all the parts - Arduino Uno REV3 - 12V 2A Power Supply - 2020 V Slot Aluminum Extrusion - Linear Motion Rod - Linear Ball Bearings - Stepper Motor Nema 17 - 5M GT2 Timing Belt 6mm Width - Stepper Motor Driver Module

19/5/25 time spent: 30 mins - updated journal [commit] from yesterday - update bom [commit 1][commit 2] - more misc items like screws, servo, bearings etc that i will need, found good links for those - made some small changes - made a nice readme, can update more [commit]

21/5/25 time spent: 15 mins - found some nice limit switches for homing on digikey, updated bom

23/5/25 time spent: 20 mins - found stl files for some parts - started designing -

24/5/25 time spent: 1 hr - researched how to do stuff with aluminum extrusions - looked at my printer for inspiration on how to connect those - most of the connectors i found required tapping, which i dont have tools for - updated bom with good parts i found [commit] - parts include connection parts to connect the extrusions securely - they slide in to the v part, and then i tighten them with grub screws so that no tapping threads is required - also wheel rollers, 2 bases for them (4 rollers each) and adjusting nuts for the wheel. the rollers roll on the aluminum extrusions, a base on each side. The linear bearings are connected to those for the other axis.

• update: i found much cheaper parts, specifically for the roller. amazon had a pack of 2 of the whole thing (rollers, adjusters and plate included) for much cheaper than what i first found
• i also found cheaper aluminum extrusions, that even came with connecter things and screws, so more stuff for less price
• also got rid of the 12v 2a power supply, it wasnt neccessary bc i have a variable power supply that i can use