# Testing Embedded Systems in the Cloud and On-Prem with Marie Meyer and Joel Schulz-Andres

- Show: [The Pragmatic Embedded Podcast](https://hardwarepodcasts.com/podcast/the-pragmatic-embedded-podcast)
- Published: 2026-10-13
- Length: 45m
- Page: https://hardwarepodcasts.com/podcast/the-pragmatic-embedded-podcast/2026-10-13-testing-embedded-systems-in-the-cloud-and-on-prem-with-marie-meyer-and-joel-schu
- Listen: https://agileembeddedpodcast.com/episodes/testing-embedded-systems-in-the-cloud-and-on-prem-with-marie-meyer-and-joel-schulz-andres-5V9JW86v

## Summary

Marie Meyer and Joel Schulz-Andres, founders of OnMCU, discuss their cloud-based and on-prem hardware-in-the-loop (HIL) testing platform designed to bridge the gap between host unit tests and physical integration. They explain the concept of 'on-target unit tests' using remote dev boards to catch peripheral errata early, and detail the significant hardware challenges they faced, including unreliable USB hubs and non-existent cable chains, when building their infrastructure. The conversation covers the trade-offs between cloud scalability and on-prem security, as well as their strategy to offer a generalized interposer box to help small-to-medium companies avoid building expensive custom test rigs from scratch.

## Chapters

- [0:00](https://hardwarepodcasts.com/podcast/the-pragmatic-embedded-podcast/2026-10-13-testing-embedded-systems-in-the-cloud-and-on-prem-with-marie-meyer-and-joel-schu#t=0) Introduction: Marie Meyer and Joel Schulz-Andres of OnMCU
- [1:51](https://hardwarepodcasts.com/podcast/the-pragmatic-embedded-podcast/2026-10-13-testing-embedded-systems-in-the-cloud-and-on-prem-with-marie-meyer-and-joel-schu#t=111) The gap in embedded testing and the FFT/MCU benchmarking story
- [4:12](https://hardwarepodcasts.com/podcast/the-pragmatic-embedded-podcast/2026-10-13-testing-embedded-systems-in-the-cloud-and-on-prem-with-marie-meyer-and-joel-schu#t=252) On-target unit tests: catching clock and peripheral bugs on dev boards
- [10:44](https://hardwarepodcasts.com/podcast/the-pragmatic-embedded-podcast/2026-10-13-testing-embedded-systems-in-the-cloud-and-on-prem-with-marie-meyer-and-joel-schu#t=644) Transitioning from cloud boards to on-prem hardware and remote sensor shielding
- [16:18](https://hardwarepodcasts.com/podcast/the-pragmatic-embedded-podcast/2026-10-13-testing-embedded-systems-in-the-cloud-and-on-prem-with-marie-meyer-and-joel-schu#t=978) Reusing test rigs for end-of-line production testing
- [18:38](https://hardwarepodcasts.com/podcast/the-pragmatic-embedded-podcast/2026-10-13-testing-embedded-systems-in-the-cloud-and-on-prem-with-marie-meyer-and-joel-schu#t=1118) The difficulty of generalizable fault injection across voltage levels and protocols
- [22:00](https://hardwarepodcasts.com/podcast/the-pragmatic-embedded-podcast/2026-10-13-testing-embedded-systems-in-the-cloud-and-on-prem-with-marie-meyer-and-joel-schu#t=1320) Cloud vs. on-prem trade-offs: latency, security, and 5G isolation
- [27:57](https://hardwarepodcasts.com/podcast/the-pragmatic-embedded-podcast/2026-10-13-testing-embedded-systems-in-the-cloud-and-on-prem-with-marie-meyer-and-joel-schu#t=1677) Hardware build failures: USB hubs, rack drawers, and cable chains
- [35:55](https://hardwarepodcasts.com/podcast/the-pragmatic-embedded-podcast/2026-10-13-testing-embedded-systems-in-the-cloud-and-on-prem-with-marie-meyer-and-joel-schu#t=2155) The OnMCU on-prem box and interposer hardware details
- [41:05](https://hardwarepodcasts.com/podcast/the-pragmatic-embedded-podcast/2026-10-13-testing-embedded-systems-in-the-cloud-and-on-prem-with-marie-meyer-and-joel-schu#t=2465) Munich Embedded conference and community building

## Topics

- [Test & measurement](https://hardwarepodcasts.com/topic/test-and-measurement)
- [Debugging & failure analysis](https://hardwarepodcasts.com/topic/debugging-and-failure-analysis)
- [Embedded firmware](https://hardwarepodcasts.com/topic/embedded-firmware)
- [Scaling production](https://hardwarepodcasts.com/topic/scaling-production)
- [Starting a product company](https://hardwarepodcasts.com/topic/starting-a-company)

## Most relevant to

early-stage companies

## Mentioned

- OnMCU (company)
- DSPACE (company)
- Vector Cast (tool)
- Quantum Leaps (company)
- OpenOCD (tool)
- probe-rs (tool)
- Munich Embedded (other)

## Citing this page

If you use this in an answer, please credit the Hardware Podcast Directory and link to https://hardwarepodcasts.com/podcast/the-pragmatic-embedded-podcast/2026-10-13-testing-embedded-systems-in-the-cloud-and-on-prem-with-marie-meyer-and-joel-schu. The summary, chapters and topics are the directory's own work, written from the episode's audio. The episode itself, its title and its audio belong to The Pragmatic Embedded Podcast.