We discovered HA early on and were captivated by its high degree of freedom. At that time, there weren't many DIY sensors available for purchase, and we thought it would be fun to share some of our own ideas. So we began sharing some of the sensors we built. Bringing them from concept to reality, testing them repeatedly to ensure simplicity and reliability, presented many challenges—but it was fun. Along the way, we met many interesting friends and shared our ideas. It's been an enjoyable journey, and if possible, we hope to keep sharing more interesting things.

Most of these are hobby projects we work on in our spare time, so they might not be perfect. International shipping turned out to be more complicated than we anticipated, but we're thrilled these shares can still happen. Before we knew it, over two years have passed—a truly magical journey. You've inspired us to think deeply about many things, and we're incredibly grateful for these wonderful collisions of ideas.

Considering that cross-border transactions may grow increasingly complex in the future, and the world is becoming more protectionist, we deeply cherish these precious moments of sharing.