Our hacker [John Duffy] wrote in to tell us a couple of video he put collectively to clarify the design of his open-source multimeter, the HydraMeter.
When you’re eager about how the circuitry for a voltmeter, ohmmeter, or ammeter may work, this video is a masterclass. On this lengthy and detailed video, [John] walks us by means of his options to varied challenges he had whereas designing his personal multimeter. We coated this multimeter final yr, and this new video elaborates on the design of the HydraMeter which has been a piece in progress for years now.
The essential design feeds voltage, present, and resistance front-ends into an Analog to Digital Converter (ADC), which then feeds right into a microcontroller and out to the (removable) show. You will discover the KiCad design recordsdata on the GitHub web page. There may be additionally a write-up on hackaday.io.
The person interface for the meter is… opinionated, and maybe to not everybody’s style. Within the video, [John] talks somewhat bit about why he made the UI work the way in which that it does, and he famous that including a rotary vary swap is a purpose for model 2.0.
The case is 3D printed and [John] had glowing issues to say about his Bambu printer. He additionally had glowing issues to say about D-sub connectors, however he did not have glowing issues to say about Stable Edge, the CAD software program he used to design the case.
Thanks, [John], for placing this video collectively; it is a superb useful resource. We stay up for seeing model 2.0 develop quickly!
