Hydra Meter - Open Source Electronics Multimeter

[EEVblog]

Open source multimeter project:

[Simmed]

no more turning dial ranges
a quick flip
 

[rteodor]

Also mentioned here: https://www.eevblog.com/forum/oshw/hydra-meter/

[EEVblog]

Also mentioned here: https://www.eevblog.com/forum/oshw/hydra-meter/

Oops. Will probably get more traction in the test equipment section here.

[SiliconWizard]

I'll put a link to the repo here: https://github.com/jduffy105/HydraMeter_0.4
(it's also in the other thread)

[coppercone2]

I did not look through schematics and designs yet but I think a good feature would be to add a solder pad to attach a 'finger' to, so if you make it, and use some kind of shield like paint, tape, plating or just metal panel, it can ground to a good point on the PCB. It might get rid of issues that are likely to arise from walki talki and stuff like that. Its a zero cost feature (for the PCB) that can potentially save some users alot of trouble.

Most meters at least have a spring finger and a small metal sheet in them to act as a partial shield on the back cover.

fluke often has some version of this
https://lh4.googleusercontent.com/-7XFkS10TFfY/VE7yZJFR3zI/AAAAAAAAAPw/Yq-aHcAMank/w762-h572-no/04.JPG

They will just have a springy metal piece soldered to the PCB that touches it when you close it up

https://www.eevblog.com/forum/testgear/fluke-179-teardown-photos/

it was added to some meter because they were acting funny around VHF. I suspect it might be a common problem for similar class of electronics.