Hi everyone,

The fully packaged shipment of USB VSense has officially left our hands and have just arrived to Mouser for fulfillment distribution to backers. Seeing these units head out the door is a massive milestone for our team. We are incredibly excited to get them into your hands so you can finally experience that "sit back and relax" moment—tracking your charge cycles from across the room without ever unlocking your screen.

Shipping Timeline & Customs
Our original fulfillment target was the end of May, which shifted to June. With the shipment now officially arrived, we expect Mouser to start shipping to backers within the next two weeks.

This shift was due to the administrative realities of international freight—specifically, establishing the Importer of Record (IOR) procedures required by US Customs. We worked with the carrier to finalize the customs clearance protocols. The process has been resolved, and Mouser will soon begin individual fulfillment from their warehouse to your doors.

Please make sure to check your shipping address is still current and correct in your Crowd Supply Account, under your Order Details.

Bench Testing & Assembly
We started this production run with 90 main boards. Because USB VSense is an inline device, we were able to streamline our load testing by daisy-chaining the units in batches. Here is how the final testing and assembly broke down:

1. Continuity Testing: We first verified the USB-C solder joints for any defects using an off-the-shelf USB-C cable tester.
2. Load Testing (6A Current Dump): Next, we ran a 6A current dump test. Thanks to the inline design, we daisy-chained the boards in batches of six, shorted one end, and drove the other with a power supply at 6A. Each batch was stress-tested for 10 minutes while we monitored for any unusually high voltage drops.

6A load testing on a batch of six daisy-chained USB VSense boards.

3. Programming & Functional Testing: After flashing the ATtiny406 microcontrollers, we moved to functional testing. Using a programmable power supply, we swept through a list of predefined voltages to verify ADC accuracy across the entire range and visually inspect the LED triggers.

Main PCBs after testing.

Yield & Final Assembly
Out of 90 initial boards, all 90 passed the continuity and load tests. Only two failed the final functional test (both due to defective LED solder joints). A yield of roughly 98% is excellent, and PCBWay did a solid job on the main board fabrication. The remaining 88 passing boards were then fully assembled with their enclosure PCBs.

USB VSense units after assembly.

Packaging & Documentation
It was incredibly rewarding to go the extra mile with the final presentation. When your order arrives, it will be sealed in a matte white bag. Inside, alongside the USB VSense itself, you will find a printed A6 safety instruction manual and a hand-signed thank you note from us.

The printed safety manual and packaging.

To give you a look at the final leg of the journey from our end, here is a peek inside the shipping box right before we sealed it for freight.

The completed batch packed and ready for dispatch.

Bringing USB VSense to life has been an incredible process, and your support is what made this production run a reality. Thank you for your patience as we clear this final logistics hurdle. Can’t wait to see what you do with USB VSense.

Forward,

— Team Meticulous Technologies