Our Work

The Adafruit Feather ESP32-S3 is a little powerhouse of a module. It has a neopixel, LiPo charger and monitor, your ESP32 reset and boot buttons, and a nice little isolated I2C power line with a Stemma QT connector. I recently implemented a deep sleep program with the ULP co-processor (see also, Using the ESP32-S3 ULP […]

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, […]

Learn how Hublink.cloud addresses challenges in wirelessly transferring SD card data from FED3 devices used in behavioral neuroscience experiments.

The ESP32 devices’ Ultra-Low-Power (ULP) coprocessor enables access to peripherals such as RTC GPIO, RTC I2C, SAR ADC, or temperature sensors (TSENS).

Impedance is the opposition to electrical current in a circuit, and in brain electrodes, it matters because high impedance can reduce signal quality, leading to poor detection of neural activity or inefficient stimulation delivery.

FED failures can be traced to IR sensor and circuit board issues, which can be remediated with an isopropyl wash.

Here, we present a tube-based magnet float and enclosed magnetic sensor array to determine and record sub-milliliter liquid intake every 10s called “Tubetrode”.

We aimed to determine if a spray coating could mitigate leaking. Furthermore, if deployed as a submersible/vessel, could our parts withstand acute exposure to external pressure (e.g., up to 80 meters)?