EEZ Bench Box 3

by Envox

Modular, open-source test & measurement chassis

View all updates Aug 05, 2020

Everything Is Now Ready For Shipping!

by Denis Kotlar (a.k.a. prasimix)

We are finally in a position to announce that we have everything we need to fill all crowdfunding orders. The fifth batch of DCP405 modules arrived two days ago, so we now have enough for all of our backers! If we can quickly agree on shipping terms, the shipment could be on its way to Crowd Supply by next week.

Manufacturing Challenges

We’ve also decided that the time has come to share the name of a company whose constant false presentation, blatant lying, delays, and poor quality control put this entire project at risk. AssemTec Europe, a Poland-based manufacturer, has left us in a situation from which it will take us a very long time to recover. We have carried out extensive testing to ensure that all of the modules we ship to backers meet our standards of quality, but working with this company made it extremely frustrating, expensive, and time-consuming to do so.

We found out too late what kind of company this is. With two staff members in a small, rented office, AssemTec Europe was unable to handle the logistics needed for EEZ BB3 production. They allegedly brought in a subcontractor called PRODEL to speed up delivery, but the end result is that, after four months, we still have not received all 570 of the DCP405s that we ordered. Which is truly shocking. We have consulted with several other PCBA contractors, and they all agree that such a time line is nearly inconceivable.

In short, we would strongly recommend to our follow creators that you avoid the incompetent duo beyond AssemTec Europe.

The Good News

Despite the challenges described above, we are incredibly excited about the prospect of finally shipping EEZ BB3s to all of our backers. We continue to make ongoing improvements, and remain confident that BB3 has a bright future.

  1. Firmware 1.1 is nearing completion. In it, we have implemented a number of minor improvements, including better USB support. For example, it is now possible to see SD cards as mass storage devices, detect OTG devices, and navigate using a mouse.

  2. EEZ Studio version 1.0 is also close to release. This version simplifies access to EEZ BB3, facilitates firmware updates for modules such as the DCM220, and improves the process of updating system MicroPython scripts and program lists.

  3. We are slowly making progress toward CE marking. We have completed a series of tests in an accredited lab. Certification won’t affect current orders, but will let us be more flexible with sales in the future.

About the Author

Denis Kotlar (a.k.a. prasimix)


$154,699 raised

of $85,000 goal

181% Funded! Order Below

Product Choices


BB3 - Starter (Without Peripheral Modules)

A BB3 enclosure kit without bare PCBs but with fully-assembled core modules (AUX-PS, MCU STM32F7, and BP3C DIB 3-slot backplane). The Starter provides an environment for experimenters who are willing to build their own modules or who want a specific BB3 configuration (such as a six-channel BB3).


BB3 - Two Channel (Full)

A BB3 starter kit and two full-featured DCP405 single-channel (40 V, 5 A) peripheral power modules, including an AC/DC power module for each. A two-channel programmable power source with advanced features: remote sensing, remote programming, a down-programmer, and additional OVP (with crowbar).


DCP405 One Channel Module (Full)

A full-featured DCP405 single-channel (40 V, 5 A) peripheral power module with remote sensing, remote programming, a down-programmer and crowbar OVP. Includes an AC/DC module.


DCM220 Two Channel Module

A DCM220 dual-channel (2 x 20 V, 4 A) peripheral power module and its AC/DC module.


Cable Set

Two pairs of high quality, silicone, color marked (black-red), 1 m connecting cables; a pair of clip-on probes; and a pair of insulated crocodile clips.



Envox d.o.o. is home of the Envox Experimental Zone (EEZ), an open source initiative to bridge the gap between DIY / hobbyist / educational / low-budget and professional / commercial test and measurement solutions.

Denis Kotlar (a.k.a. prasimix)

Martin Vladic

Mouser Electronics

Component Provider

TME Electronic Components

Components & Hardware Sourcing

Jedinstvo - Kartona┼ża d.o.o.


Printing & Packaging

Drives and Motors d.o.o.


PCB & PCBA Manufacturing

See Also

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