Author Topic: New EEVBlog-Branded Multimeter Coming?  (Read 84893 times)

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Offline rollatorwieltje

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Re: New EEVBlog-Branded Multimeter Coming?
« Reply #100 on: February 01, 2017, 10:55:00 pm »
Something that will be a world first in rulers
Add WIFI, so it can convert between metric and imperial using some cloud service. :horse:

Put the numbers on an LCD, the base model will only show centimeters, when you need millimeters you need to buy an additional license. :horse:


 

Offline Muttley Snickers

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Re: New EEVBlog-Branded Multimeter Coming?
« Reply #101 on: February 01, 2017, 11:51:21 pm »
I could probably do with an out of my depth gauge on occasion.   ???
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Offline jm_araujo

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Re: New EEVBlog-Branded Multimeter Coming?
« Reply #102 on: February 01, 2017, 11:58:41 pm »
Something that will be a world first in rulers
Add WIFI, so it can convert between metric and imperial using some cloud service. :horse:

Put the numbers on an LCD, the base model will only show centimeters, when you need millimeters you need to buy an additional license. :horse:

+1 for the first IoT ruler, complete with kickstarter campaign! :popcorn:
 

Offline Wytnucls

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Re: New EEVBlog-Branded Multimeter Coming?
« Reply #103 on: February 02, 2017, 12:14:19 am »
uRuler with electronics calculator

 

Offline igendel

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Re: New EEVBlog-Branded Multimeter Coming?
« Reply #104 on: February 02, 2017, 12:50:08 am »
Sure, why not reveal a low-burden multimeter just after I order a uCurrent?  :P
At least this uCurrent will have a lot of experiences to share with me, as DHL seems to be giving it a long vacation in Europe  >:D
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Offline macboy

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Re: New EEVBlog-Branded Multimeter Coming?
« Reply #105 on: February 02, 2017, 05:27:40 am »
Dave, why did you call it the 121GW?
From the film Back To The Future (Part 1)


I'm almost certain you've hit the nail on the head.  :-+
 

Offline joeqsmith

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Re: New EEVBlog-Branded Multimeter Coming?
« Reply #106 on: February 02, 2017, 05:33:17 am »
... we have more important things to worry about.

I'm sure they will sort of what ever the problems are. 
How electrically robust is your meter?? http://www.youtube.com/channel/UCsK99WXk9VhcghnAauTBsbg
 

Offline wilfred

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Re: New EEVBlog-Branded Multimeter Coming?
« Reply #107 on: February 02, 2017, 11:13:19 am »
... we have more important things to worry about.

I'm sure they will sort of what ever the problems are.
This is the full quoted text of the response from Dave to my enquiry.
The LCD is not changing, we have more important things to worry about.

That's a very direct, honest answer. Good on Dave for doing that.

Selectively editing words carelessly can change the meaning. I would possibly tolerate that sort of unctuous post if seemed other than totally self serving.





 

Offline joeqsmith

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Re: New EEVBlog-Branded Multimeter Coming?
« Reply #108 on: February 02, 2017, 12:23:42 pm »
... we have more important things to worry about.

I'm sure they will sort of what ever the problems are.
This is the full quoted text of the response from Dave to my enquiry.
The LCD is not changing, we have more important things to worry about.

That's a very direct, honest answer. Good on Dave for doing that.

Selectively editing words carelessly can change the meaning. I would possibly tolerate that sort of unctuous post if seemed other than totally self serving.

I must have missed something.    We know he was having some problems with the BT connection.  Not sure how saying I'm sure they will sort things out is self serving.   

Meter is looking sharp!  Hope the testing is going well

Actually, a few major issues still...


I couldn't help thinking of simpsons after I hear dave mention "it has bluetooth, 4 AA's instead of AAA, and two full size HRC".

I just got the prototype and the Bluetooth doesn't seem to connect on my android phone  :scared:
How electrically robust is your meter?? http://www.youtube.com/channel/UCsK99WXk9VhcghnAauTBsbg
 
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Offline samgab

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Re: New EEVBlog-Branded Multimeter Coming?
« Reply #109 on: February 11, 2017, 11:16:04 am »
I was doing a little bit of google "research" on AFE (Analog Front Ends) and such for DMM's, and I came across this very interesting document from TI:
http://www.ti.com/lit/ug/tidubv5a/tidubv5a.pdf

Wireless IoT, Bluetooth® low energy, 4½ Digit, 100-kHz
True RMS Digital Multimeter Reference Design

Features
• Basic DMM Measurement Modes:
– Voltage: 50 V, 5 V, 500 mV, and 50 mV
– Current: 50 mA and 500 µA
• 18-Bit, 400 kSPS, SAR ADC Enabling:
– 50,000 Display Count Resolution
– 1-µV / 10-nA resolution
– .05% DC Accuracy, 3% AC Accuracy at
100 kHz
• Wireless MCU Enabling BLE for IoT Wireless
Communication
etc.


I wonder if this DMM (121GW) is built on any aspects of this "TIDA-01012" reference design at all? (50000 counts, bluetooth, etc)

If not, does anyone know of any DMM which IS built based on it? It sounds pretty cool, and interesting to me. I like the features, and although I haven't read the whole PDF document yet, it's making for some interesting reading.
 

Offline EEVblog

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Re: New EEVBlog-Branded Multimeter Coming?
« Reply #110 on: February 11, 2017, 11:27:13 am »
I wonder if this DMM (121GW) is built on any aspects of this "TIDA-01012" reference design at all? (50000 counts, bluetooth, etc)

It's not.
Standard multimeter chipset + ST ARM processor.
 
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Offline samgab

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Re: New EEVBlog-Branded Multimeter Coming?
« Reply #111 on: February 11, 2017, 11:29:18 am »
I wonder if this DMM (121GW) is built on any aspects of this "TIDA-01012" reference design at all? (50000 counts, bluetooth, etc)

It's not.
Standard multimeter chipset + ST ARM processor.

Oh cool. Thanks.  :-+ I'm learning lot about DMM design from reading some of that TI documentation. This is a good one too: http://www.ti.com/lit/ug/tidubm4a/tidubm4a.pdf
 

Offline samgab

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Re: New EEVBlog-Branded Multimeter Coming?
« Reply #112 on: February 16, 2017, 05:28:16 pm »
It seems like nearly every new EEVBLOG video these days, Dave is carefully/deliberately unveiling a new small aspect of the pending 121GW DMM.
Here are a couple of screenshots from the recent EEVBLOG #972:





From these pics we can glean: Input protection stuff; 4(?) x PTC's, 3 x MOV's, 2 x power resistors, 1 large 1000V HRC 10A fuse, and 1 small type DMM HRC fuse for the low current range. Also looks like dual solder points for each input jack. Does that mean some kind of insertion detection/alert?
 

Offline gnif

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Re: New EEVBlog-Branded Multimeter Coming?
« Reply #113 on: February 16, 2017, 08:45:23 pm »
I wonder if this DMM (121GW) is built on any aspects of this "TIDA-01012" reference design at all? (50000 counts, bluetooth, etc)

It's not.
Standard multimeter chipset + ST ARM processor.

Whats the processor? and will it be open to custom firmware?
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Offline EEVblog

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Re: New EEVBlog-Branded Multimeter Coming?
« Reply #114 on: February 16, 2017, 09:35:10 pm »
Whats the processor? and will it be open to custom firmware?

STM32L152D
Schematic and protocols will be open, not sure about firmware.
Standard low cost ST ARM programmer header.
 

Offline gnif

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Re: New EEVBlog-Branded Multimeter Coming?
« Reply #115 on: February 16, 2017, 11:20:12 pm »
Whats the processor? and will it be open to custom firmware?

STM32L152D
Schematic and protocols will be open, not sure about firmware.
Standard low cost ST ARM programmer header.

Awesome, will open up some possibilities for some since the chip is fully documented in the public domain and the schematic will help oodles too!
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Offline EEVblog

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Re: New EEVBlog-Branded Multimeter Coming?
« Reply #116 on: February 16, 2017, 11:42:03 pm »
Whats the processor? and will it be open to custom firmware?

STM32L152D
Schematic and protocols will be open, not sure about firmware.
Standard low cost ST ARM programmer header.

Awesome, will open up some possibilities for some since the chip is fully documented in the public domain and the schematic will help oodles too!

I also can't see why code snippets can't be released. e.g. LCD drivers, maybe chipset driver etc.
I'd like it to be completely open source, but it's hard to convince companies to do this.
 

Online BravoV

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Re: New EEVBlog-Branded Multimeter Coming?
« Reply #117 on: February 17, 2017, 12:01:03 am »
I also can't see why code snippets can't be released. e.g. LCD drivers, maybe chipset driver etc.
I'd like it to be completely open source, but it's hard to convince companies to do this.

I assume there will be some checking mechanism that flag or show if the dmm has been "rooted" ?

Otherwise it will be a support nightmare, cmiiw.
 

Offline mdijkens

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Re: New EEVBlog-Branded Multimeter Coming?
« Reply #118 on: February 17, 2017, 08:34:22 am »
From the pictures it almost looks as if there's an ESP8266 in there, but next to the STM32L152D does not make sense I guess  :)
 

Offline Zbig

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Re: New EEVBlog-Branded Multimeter Coming?
« Reply #119 on: February 17, 2017, 09:14:54 am »
From the pictures it almost looks as if there's an ESP8266 in there, but next to the STM32L152D does not make sense I guess  :)

Bluetooth module
 

Offline samgab

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Re: New EEVBlog-Branded Multimeter Coming?
« Reply #120 on: February 17, 2017, 10:11:36 am »
From the pictures it almost looks as if there's an ESP8266 in there, but next to the STM32L152D does not make sense I guess  :)

Bluetooth module

Yes, that's right, it looks like it's on its own little soldered-on daughter board, as I've seen before with "jellybean" bluetooth modules.
As for the DMM IC, my guess for the DMM front end IC is maybe the Hycon HY3131 or the Fortune FS9704B? The UEI DM397 DMM uses the 50,000 count FS9704B IC, but I thought the 50,000 count HY3131 seemed like a better feature match (eg, runs at 3.6V). But it might be neither of those two, maybe there are other dedicated 50000 count DMM IC chips out there?
And the DMM IC would work in conjunction with the STM32L micro I presume. I don't know too much about that area, but I'm interested in learning a bit.
 

Offline Trevset

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Re: New EEVBlog-Branded Multimeter Coming?
« Reply #121 on: February 18, 2017, 09:45:56 am »
Does this thing have an estimated time of release?


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Offline EEVblog

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Re: New EEVBlog-Branded Multimeter Coming?
« Reply #122 on: February 18, 2017, 10:18:27 am »
Does this thing have an estimated time of release?

As soon as it's ready. The Gantt chart was thrown out the window a long time back
 

Offline valere

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Re: New EEVBlog-Branded Multimeter Coming?
« Reply #123 on: February 19, 2017, 08:10:48 am »
Is that going to be a Kickstarter as some people suggest in this thread or just "normal EEVBlog shop" ?
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Offline rrinker

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Re: New EEVBlog-Branded Multimeter Coming?
« Reply #124 on: February 19, 2017, 10:36:18 am »
EEVBlog - We will sell no multimeter before its time!
 


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