Soccer ball launcher prototype, 2023. MicroPython / Raspberry Pi Pico, dual motor controller, and a couple of DC motors.

Sketchpad: two-point perspective

Constraint-Based Spreadsheet, 2014. An attempt to make spreadsheets more powerful and user-friendly by replacing one-way formulas with multi-way constraints. Check out the source code (OhmJS inside!) and play with the live demo at github.com/harc/constrain…

We're now sending out monthly email newsletters at Ink & Switch -- sign up at the bottom of the lab website if you wanna follow along!

Fellow technologists: next time you use 'incredibly' in a sentence, consider omitting it altogether. You'll be *incredibly* glad you did.

Sketchpad running on the iPad! (This is my plug for the Ink & Switch wrapper, check it out at github.com/inkandswitch/w…)

what if you could model a problem in a spreadsheet, and then instantly start applying powerful *filters* to explore your space of options? that's the idea Alex Warth and I have been exploring recently at Ink & Switch ... 1/

New longform Ink & Switch essay! 📜 Malleable Software by me, Josh Horowitz, Peter van Hardenberg and Todd Matthews. inkandswitch.com/essay/malleabl… It's about why people need agency over their software tools, and how to make that happen. Here's the quick tl;dr... 1/