10:59 <whitequark> electronic_eel: very nice

11:34 <electronic_eel> whitequark: the io protection or did you take a look at the test jig board?

11:36 <whitequark> io protection

11:37 <electronic_eel> yes, working out well so far

11:37 <electronic_eel> I'm still a bit skeptical about the esd protection solution with the shield diode in front: it might not work that well with higher voltages

11:38 <electronic_eel> I ordered some lna boards from china yesterday

11:38 <electronic_eel> when they arrive I can do testing with voltages up to 5v

11:40 <electronic_eel> could you take a look at the test jig board?

11:40 <electronic_eel> I'd like to order them soon

11:42 <tnt> electronic_eel: you mean the protection on the glasgow itself or on your protection board ?

11:42 <electronic_eel> the protection on my protection board

11:42 <electronic_eel> I use depletion mode fets for the main protection function up to +-30v

11:42 <electronic_eel> but these fets are not esd protected

11:43 <electronic_eel> so I have to put something in front for that

11:43 <electronic_eel> see https://github.com/electroniceel/io-protection-notes/blob/master/esd-protection/README.md

11:43 <tnt> Ah ok, I see.

12:25 <tnt> electronic_eel: how do you test ESD discharges btw ?

12:31 <electronic_eel> currently I use the piezo crystal of a lighter

12:32 <electronic_eel> isn't exactly whats in the norm, but proper esd guns are really expensive

12:36 <tnt> Do you have any idea where it sits in terms or voltage / energy ?

12:41 <electronic_eel> no, unfortunately not

12:41 <electronic_eel> hard to measure as it is so fast

12:41 <whitequark> you could get a minimum bound

12:41 <whitequark> and a maximum one

12:41 <electronic_eel> and small added capacitances or inductances change everything

12:42 <whitequark> by using ignition energy and spring tension

12:45 <electronic_eel> hmm. ignition energy of propane/butane gas. isn't that very low, like as soon as you get any kind of nearly visible spark, it also ignites?

12:46 <whitequark> 0.25 mJ apparently

12:46 <whitequark> interestingly, for coffee this is 160 mJ

12:46 <whitequark> could do a binary search with this: http://www.explosionsolutions.co.uk/110411020.pdf

12:46 <electronic_eel> igniting coffee?

12:48 <whitequark> yes. this is for dust explosions

12:48 <electronic_eel> ah, ok

12:50 <electronic_eel> but I'm not sure if it is worthwhile to dig deeper into this. I also gut an old spark plug coil of a car.

12:50 <electronic_eel> I think I'm better off trying to get that going and blast the circuit with that

12:50 <whitequark> that can certainly deliver a lot of energy

12:50 <electronic_eel> if it survives I call it a day

12:52 <electronic_eel> whitequark: could you please take a look at my test jig circuit

12:52 <electronic_eel> https://github.com/electroniceel/Glasgow/tree/test-jig/hardware/boards/test-jig

12:52 <electronic_eel> I'd like to order the pcbs

12:52 <electronic_eel> want to order some other stuff with it

12:55 <electronic_eel> here is how I think it could be mounted into the fixture esden plans to use: https://imgur.com/XwYbHXf

12:57 <whitequark> electronic_eel: in a few hours

12:58 <electronic_eel> thanks. waiting for your feedback then

12:58 <electronic_eel> just have a short look over the layout

12:58 <electronic_eel> the schematics was already reviewd

22:41 <kc8apf> TIL HID over I2C is a thing: https://docs.microsoft.com/en-us/previous-versions/windows/hardware/design/dn642101(v=vs.85)

22:42 <sorear> my laptop has an i2c connected touchpad

22:46 <hellsenberg> I think most touchpads are connected over i2c

22:46 <ender|> nah, usually they're PS/2

22:48 <hellsenberg> that's the interface the EC exposes to the host, isn't it?

22:57 <kc8apf> and of course MS built firmware update over HID https://github.com/Microsoft/CFU

22:59 <hellsenberg> eek!

23:01 <kc8apf> whitequark: feel free to shoo me if this is too far offtopic.

23:02 <hellsenberg> same

23:10 <whitequark> kc8apf: totally fine