I turned my pickup truck into a printer

It s like skywriting but on the road. I turned my truck into the world s largest dot matrix printer. Now I can leave driveby messages in front of friends houses. This was a project I thought of during the pandemic. I ordered the supplies a few years ago and never actually did anything with them, so I wanted to finally make it happen. I skipped over some of the technical details, so if anything s unclear let me know. I ll also post the code on my GitHub for anyone who s interested.