# The Joulescope Upgrade with Matt Liberty

- Show: [The Amp Hour](https://hardwarepodcasts.com/podcast/the-amp-hour)
- Published: 2022-10-31
- Length: 1h 15m
- Episode: 607
- Page: https://hardwarepodcasts.com/podcast/the-amp-hour/2022-10-31-the-joulescope-upgrade-with-matt-liberty
- Listen: https://theamphour.com/607-the-joulescope-upgrade-with-matt-liberty/

## Summary

Matt Liberty, founder of JetPerch LLC, discusses the launch of the Joulescope JS220, an upgraded high-dynamic-range current and voltage measurement device. He details the hardware evolution from the JS110, including the switch to a Lattice ECP5 FPGA, a Cortex-M7 microcontroller, and a 16-bit ADC, while explaining the custom firmware architecture and publish-subscribe protocol. Liberty also shares his experiences navigating the global chip shortage, managing supply chain risks with PartsBox, and the financial pressures of bootstrapping a hardware business.

## Chapters

- [0:00](https://hardwarepodcasts.com/podcast/the-amp-hour/2022-10-31-the-joulescope-upgrade-with-matt-liberty#t=0) Introduction and Joulescope Overview
- [8:51](https://hardwarepodcasts.com/podcast/the-amp-hour/2022-10-31-the-joulescope-upgrade-with-matt-liberty#t=531) JS220 Hardware Architecture and FPGA Design
- [16:48](https://hardwarepodcasts.com/podcast/the-amp-hour/2022-10-31-the-joulescope-upgrade-with-matt-liberty#t=1008) Custom RTOS and Microcontroller Firmware
- [19:50](https://hardwarepodcasts.com/podcast/the-amp-hour/2022-10-31-the-joulescope-upgrade-with-matt-liberty#t=1190) Business Operations and Support Model
- [28:36](https://hardwarepodcasts.com/podcast/the-amp-hour/2022-10-31-the-joulescope-upgrade-with-matt-liberty#t=1716) Supply Chain Challenges and Component Shortages
- [39:15](https://hardwarepodcasts.com/podcast/the-amp-hour/2022-10-31-the-joulescope-upgrade-with-matt-liberty#t=2355) Manufacturing, Calibration, and Traceability
- [44:59](https://hardwarepodcasts.com/podcast/the-amp-hour/2022-10-31-the-joulescope-upgrade-with-matt-liberty#t=2699) Analog Design and Measurement Technology
- [1:04:01](https://hardwarepodcasts.com/podcast/the-amp-hour/2022-10-31-the-joulescope-upgrade-with-matt-liberty#t=3841) Evaluation Kit and Software Ecosystem

## Topics

- [Scaling production](https://hardwarepodcasts.com/topic/scaling-production)
- [Sourcing & supply chain](https://hardwarepodcasts.com/topic/sourcing-and-supply-chain)
- [PCB design & layout](https://hardwarepodcasts.com/topic/pcb-design)
- [Embedded firmware](https://hardwarepodcasts.com/topic/embedded-firmware)
- [Pricing, margins & unit economics](https://hardwarepodcasts.com/topic/pricing-and-unit-economics)
- [Hiring & workforce](https://hardwarepodcasts.com/topic/hiring-and-workforce)

## Most relevant to

early-stage companies

## Mentioned

- Joulescope JS220 (product)
- Joulescope JS110 (product)
- Lattice ECP5 (chip)
- PartsBox (tool)
- Raspberry Pi Pico (chip)
- Nordic Power Profiler (product)
- Keysight CX3300 (product)
- DigiKey (company)
- Mouser (company)
- Alibaba (company)

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## Citing this page

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