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DoESLiverpool / somebody-should

A place to document practices on the wiki and collect issues/suggestions/to-do items for the physical space at DoES Liverpool
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Pledge drive for a USB Power meter #1584

Closed johnmckerrell closed 1 month ago

johnmckerrell commented 3 years ago

I'd quite like a USB power meter but don't want to pay full price for a good one, and don't want a rubbish one :-)

They're £40-50, I could put in £10, anyone else want to join me?

I've seen this on Amazon which has decent reviews:

https://smile.amazon.co.uk/Klein-Tools-ET920-Power-Meter/dp/B07GXZHPVR/?_encoding=UTF8&pd_rd_w=Qo2Vf&pf_rd_p=8dde2346-7e91-4f1b-a111-f838fe0a19b1&pf_rd_r=WWQBH0R7HPFGB2K3P7P9&pd_rd_r=8bd4dbe1-d304-44e2-9dfe-4a87a81802c7&pd_rd_wg=1YX3O&ref_=pd_gw_ci_mcx_mr_hp_atf_m

It's just over £40 (with shipping) although would take a few weeks to arrive, or £49 would get it on next day Prime delivery. I checked eBay and a few other places and the prices are similar, in fact this one comes to around £40 including £12 shipping but not sure where it ships from.

https://www.mouser.co.uk/ProductDetail/Klein-Tools/ET920?qs=rkhjVJ6%2F3EJyRjOgeC1Okw%3D%3D#collapseProductSpecs

johnmckerrell commented 3 years ago

I noticed that the price on this has gone down, can get it delivered in a few days for £35.96. Anyone want to go halves?

Robotorium commented 3 years ago

Yeah go on, good plan.

Op ma 26 jul. 2021 om 17:36 schreef John McKerrell @.***

:

I noticed that the price on this has gone down, can get it delivered in a few days for £35.96. Anyone want to go halves?

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MatthewCroughan commented 3 years ago

I'll chip in, so it's divided by three now.

johnmckerrell commented 3 years ago

Great, it's on the way now, should arrive Thursday. I've got some things I want to test at home and then I'll bring it into DoES. Can arrange payments once I've confirmed it's all working as expected.

Robotorium commented 3 years ago

Shout when you know :)

Op di 27 jul. 2021 09:09 schreef John McKerrell @.***>:

Great, it's on the way now, should arrive Thursday. I've got some things I want to test at home and then I'll bring it into DoES. Can arrange payments once I've confirmed it's all working as expected.

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johnmckerrell commented 3 years ago

It arrived, I've tried it out with various things. I am sometimes left wondering if the device is causing the charger or device to make different decisions. Like when I charge my iPhone X from either a small 30W USB-C charger or my laptop's 80W charger the meter is only reporting 1.5A, so ~7.5W but it should definitely be able to use more and both chargers should be capable of providing it. I do get higher 20v 2-4A (so 40-80W) showing from my laptop charger though so does seem like it should be able to cope with higher. A few other devices give 8.9V and 1.2A, the higher voltage is interesting but still not reporting particularly high wattage.

One complaint I saw on reviews was that the male cables -> usb sockets do mean you sometimes end up having to plug directly into the charger which is then awkward. I thought "oh just use an extension cable" but of course that then changes the environment and.. who has a USB-C extension? I do have one thing I want to test that terminates on a male plug which then means I can't use the tester. I've found a female - female USB-C adapter that I'm going to try for that one.

johnmckerrell commented 3 years ago

I got the female-female adapter but for some reason the meter couldn't use it. Without the meter in place I was definitely getting a charge but when the meter was in-line it didn't even turn on. The meter uses the power from the USB to operate.

I've now taken the meter and an adapter into DoES. It's on my desk for now but we'll want to find a proper labelled place for it to live, perhaps the multimeters draw?

Robotorium commented 3 years ago

What do I owe you?

Op di 10 aug. 2021 20:13 schreef John McKerrell @.***>:

I got the female-female adapter but for some reason the meter couldn't use it. Without the meter in place I was definitely getting a charge but when the meter was in-line it didn't even turn on. The meter uses the power from the USB to operate.

I've now taken the meter and an adapter into DoES. It's on my desk for now but we'll want to find a proper labelled place for it to live, perhaps the multimeters draw?

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johnmckerrell commented 3 years ago

£35.96 / 3 = 11.98 - just put it in DoES's account and I'll take it from petty cash (if @DoESsean lets me!)

Robotorium commented 3 years ago

Sorted, reference "for john"

Op di 10 aug. 2021 20:19 schreef John McKerrell @.***>:

£35.96 / 3 = 11.98 - just put it in DoES's account and I'll take it from petty cash (if @DoESsean https://github.com/DoESsean lets me!)

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MatthewCroughan commented 3 years ago

@johnmckerrell Shall I pay 11.98 more on my invoice for DoES in order to give you this payment?

johnmckerrell commented 3 years ago

I figured a single payment would be possible but thinking about it that might not be the case, if you're in the space you could always leave cash on my desk, I'll be in on Friday.

MatthewCroughan commented 3 years ago

In Wales at the moment, so will be a while on that (week or two).

amcewen commented 2 years ago

Is this all sorted now?

johnmckerrell commented 1 month ago

Going to close this as I assume it was paid but if you remember otherwise @MatthewCroughan please do make payment somewhere!