This is because Hungary is not a listed country for Kickstarter. So we registered a company and we will launch it from the UK.
The launch price on Kickstarter is 80 pounds. Please subscribe to our Kickstarter campaign
Thank You.
I would want such product to support at least up to 12v.
We see with 12v0 that computers will probably transition to 12v stand-by.
There's lots of power adapters that power routers and cable modems and various things that work with 9-12v
USB power delivery / quickcharge has 5v / 9v / 12v and 20v (but not all chargers go higher than 12v or 15v)
If you're aiming for very low currents, why use connectors that require usage of such small connectors, don't you want reasonably thick wires for low voltage drop and all that?
Why not use something super common like mini-fit series (atx , cpu, pci-e connectors) which accept up to awg16 wires and they're mass produced, easy to find, easy to crimp pins to wires etc etc easy to make adapters ex barrel jack to 2-4 pin mini fit (just get a pci-e extension from some store, cut the wires, solder the wires to barrel jack to make your own adapter.
May not have the vertical height for a 4 pin cpu / pci-e connector but maybe you could make your product more tall but less wide or whatever.
I'd want at least 2 decimals for voltage measurement
I'd want a monospace font used for those numbers under the digits, and maybe have the digits aligned to the right. Don't want the whole row of text or just the numbers to wiggle left and right depending on how wide the characters are (ex 0.112mA vs 0.860 mA - that font looks like it would have different width for the digits.
if it has a built in websocket application , logged data could be downloaded through that ... so may consider making internal storage an option or releasing a model without SD slot for those who want higher resistance to water for example. A 2 gbit (256 MB) SPI flash chip with SLC memory and 100k erase cycles is not expensive at under 3 dollars - example here and could even be soldered to a thin pcb to make it removable / replaceable if it wears out.
80 pounds is a bit much ... maybe consider making a light version with a monochome lcd display (potentially transflective so no backlight needed) with segments instead of full color display? there's an initial cost of a few hundred dollars to design the lcd screen but afterwards each display is cheap.
or use something ready made like sharp 128x128 pixel 1.28" for 6$ in quantity (but your color lcd may be cheaper than this) : https://www.digikey.com/en/products/detail/sharp-microelectronics/LS013B7DH03/5300387
Your suggestion will cause the wiggling of decimal point from left to right which will create a lot of confusion
QuoteYour suggestion will cause the wiggling of decimal point from left to right which will create a lot of confusion
I am looking at the example video (or gif) and the decimal point is moving, presumably because the digits are centred. For something like this the digits should be static. Suppose the current changes between 10.1 and 9.9 - the digits are shuffling back and forth and it's very distracting.
Since you have a single digit after the point (soon to be two, maybe) I think right justifying would ensure the decimal point is fixed in place and everyone would be happy. After all, the bigger the number the further left it will stretch, which is meaningful without reading when the number is.
With the big space used by the micrometer text and the red bar fading out, maybe you could implement some horizontal graphing at the bottom ...like let's say 32-64 pixel tall strip with horizontal scroll showing the variations in current, this way user would see current bursts or whatever
QuoteYour suggestion will cause the wiggling of decimal point from left to right which will create a lot of confusion
I am looking at the example video (or gif) and the decimal point is moving, presumably because the digits are centred. For something like this the digits should be static. Suppose the current changes between 10.1 and 9.9 - the digits are shuffling back and forth and it's very distracting.
Since you have a single digit after the point (soon to be two, maybe) I think right justifying would ensure the decimal point is fixed in place and everyone would be happy. After all, the bigger the number the further left it will stretch, which is meaningful without reading when the number is.
However, note that the above assumes you use the full width of a 0 when placing digits, even when the actual digit is not the full width. If you're treating a 1 as only the width of the displayed segments then it will be truly horrible because it will jump around (like in your video).
Re pricing: I would probably buy one for £80 - the value is not so much in the component cost as the development work, and with a relatively small market (until someone in China copies it) the overheads are significant. It would easily cost me that to try and make one myself (although then I could suit myself about how the digits are displayed ).
Looks good! And around 90 euros seems OK for such a useful tool.
However, as I read your description, a few thoughts came to me about what I (and I'm sure others) would probably be missing quickly and what limitations therefore might stop me from buying. I'll write them down below, maybe they'll be helpful:
1) I often have measurements where I am indeed interested in the low µA-Range standby current, but the unit needs way more than 1A when switched on. An extension with a fourth measuring range (which doesn't have to be super accurate) 1-10A would be ideal (at least 5A), especially since the log function would also allow to log current consumption over a longer period of time, this would be very useful.
2) Also important for me: I do not want to connect the unit to a PC all the time if I do a quick measurement. Then I just want to quickly analyze some basic data. Sometimes I just quick information like:
· actual current
· maximum
· minimum
· average over the whole measurement cycle (you do only average over 1 second)
· switch to a graphical display (curve) of the current cycle (best with some x-axis presets like whole cycle/last minute/last 10s/last s/last 100ms/last 10ms/last 1ms).
Hello everyone!
My name is Farzan and I'm a developer at Bosch Kft in Hungary.
We have developed MicroAmp-Meter which is a current measurement tool featuring auto-ranging, Wi-Fi current profiling, SD card logging options, and more. It is a portable current meter that can record and profile the current consumption of devices in real time.
The shunt-switching topology is based on David Jones's design EEVblog #929 - Designing A Better Multimeter.
We're raising funding through Kickstarter at an affordable price, please take a look at our Kickstarter project below!
https://www.kickstarter.com/projects/microampmeter/microamp-meter?ref=banner
https://www.danalogx.com/
What is the largest capacity SD card the device will support?
I lost interest after I found no noise or drift specifications. Is the included filtering because of noisy loads or because of inherent noise? There is no way to evaluate the useful resolution.