USB VSense is a voltage indicator designed to provide insight into USB-powered devices quickly and simply. USB VSense works by giving you an unambiguous visual indication of the USB voltage mode with the help of illuminated, individually color-coded, and clearly labeled lights, one for each USB Power Delivery fixed voltage mode, up to and including the latest 48 V and 5 A Extended Power Range (EPR) specs.

It was also designed to be easy to repair and modify, featuring a stacked PCB "Oreo" construction; the entire device is made of PCBs. That means you can modify its appearance without a 3D printer, and its elegant design uses only four screws. With its open firmware, you’ll be able to make adjustments to add different blinking patterns or change the voltages if you desire.

Features & Specifications

Fully capable of the latest USB PD EPR specifications (48 V, 5 A, 240 W)

A wide operational and measurement range of 4.5 V to 51 V

Individual color-coded indicators for each fixed voltage level:

5 V (red)

9 V (orange)

12 V (yellow)

15 V (green)

20 V (lime)

28 V (blue)

36 V (purple)

48 V (white)

Distinct alerts show > 5% and > 10% deviations from the fixed voltages. This feature is also helpful in approximating PPS voltages

Passthrough for USB 2.0 data, CC, and SBUS lines

Ultra-low power consumption, less than six mA of current drawn by the device (absolute maximum under regular operation)

ATtiny 406’s 10-bit ADC with 4.3 V internal voltage reference provides stable measurements of up to 22 mV resolution for voltages below 20 V and 49 mV for voltages between 20 V and 51 V

Stacked PCB construction with high-quality parts built to last:

Automotive grade LDO from Microchip (+70 V absolute max input voltage with ESD protection)

Kingbright low-current LEDs

JAE USB Type-C connectors rated for 48 V and 5 A

56 x 18.5 x 5.6 mm (2.28 x 0.73 x 0.22 in)