A Hublink-enabled Wireless Running Wheel for Neuroscience Research

We have developed a Hublink-enabled running wheel for mice. Our wheel is self-contained and will run for two months on a single charge. Compatible with the hublink.cloud platform, our wheel will log wheel revolution-per-minute onto a micro-SD card and automatically sync with your Hublink account for visualization and data retrieval. Want to learn more? Let’s […]

Constraint-Based Design: A Practical Guide for Engineers and Creators

The next time you’re walking by a fire hydrant, look at the stem nut on the top of it: it is pentagon-shaped. This means that your standard crescent or pipe wrench can’t grip it. While this does act as an anti-tampering feature, it also conveys that this is a special-purpose application. This mirrors poka-yoke—Toyota’s system […]

Micro-SD Card Low Power Showdown – Part II

In 2020, I worked with an intern to characterize SD power characteristics (view the archive). As my colleagues and I embark on a mass deployment of new devices in 2025, it is time to revisit the perennial question: what SD card is best? Specifically, what SD card has the lowest current draw in an Arduino-based, […]

GR/PR: An open-source grip strength meter

gr/pr prototype and ios app mock-up

In animal models of limb disuse, grip strength (or force) is a measure used to characterize the time course and severity of muscle atrophy.

Evaluating a 60GHz mmWave radar system

mmWave Sensor Housing

Accuracy and applicability of Seeed Studio 60GHz mmWave Sensor (Breathing and Heartbeat Module) based on the MR60BHA1 60GHz radar module