2024-09-22, 15:20–16:05 (Europe/Belgrade), Pupin
JellyfishOPP is (will be) an open-hardware measurement device and programmable power supply designed to provide advanced, bidirectional power measurements, power optimizations, and battery profiling/simulation. It primarily targets developers of ultra-low power devices such as IoT sensors and wearable electronics, while also serving engineers, hardware hackers and hobbyists. It is a portable USB device that can be controlled through a host computer or smartphone app. Additionally, it features a simple on-device user interface for basic functionalities, eliminating the need for a host device in certain scenarios.
This talk will cover the design decisions and the current development status of the device. The main web page containing the info and links to all of the development updates can be found at https://hyperglitch.com/jellyfish.
No prior knowledge is needed to follow the talk, although some basic familiarity with electronics can help.
Since the device is in the development stage, the exact content of the talk will depend on the progress made by the time of the conference. Currently the PCB is complete and ordered and I expect to have the assembled first prototype in the next three to four weeks so the talk will also include first testing results.
Talk overview:
- problems we're solving: fast bidirectional current measurement across multiple orders of magnitude, battery simulation
- overview of the existing solutions
- what exactly is the JellyfishOPP: functionalities, use cases
- funding - this project is funded by NLnet foundation which provides funding for the development of the open source software/hardware projects
- some theory on how exactly the current is measured
- block diagram of the device, some problems from the development (galvanic isolation, selecting current sense amplifiers, ADC, MCU, ...),
- design of the enclosure and mechanical layout
- production of the first prototype, issues, challenges
- first test results
Igor Brkić is software and hardware engineer covering areas from the custom hardware and firmware development to the system and web development. He is also one of the founders of the Radiona Zagreb makerspace.