Thingiverse
3-Digit Voltmeter Dongle by enif
by Thingiverse
Last crawled date: 3 years ago
This little project shows a USB dongle which houses a inexpensive little 3-digit voltmeter LED module.
On the front, the box has a cutout for a standard 0.36" 3-digit voltmeter module. These modules are easily available and cost less than $US 2 on eBay. The back of the box is equipped with a sliding cover which gives access to the voltmeter, the USB connectors and/or connection cables. The ends of the box contain cutouts for a female and a male USB connector, or alternatively holes for the corresponding cables.
This box can be used as a testing device for monitoring directly the USB voltage. This is useful to monitor the charging voltage of solar powered USB chargers or also to detect voltage drops in the USB 5V line due to overloading of the USB power source. In particular I use this type of voltmeter with my foldable 5V solar panel to monitor the output level of the solar cells.
Another use of the box is to build a simple USB powered voltmeter. In this case, the voltmeter is powered through the male USB connector on the one end, while at the other end of the box the cables for the PLUS and MINUS probes are attached. Be careful though, always watch the polarity and measure only battery powered circuits, as the voltmeter does not measure negative voltages and shares the ground level with the USB host!!!
The SCAD source file is, as always, fully parametrized and commented, so that you can adapt it easily to your needs. Ready-to print STL files are provided for different configurations of connectors and/or cables:
male and female usb connectors in the box
male connector on one side, cable on other side
female connector on one side, cable on other side
cabel holes on both sides
The male and/or female connectors are best soldered on a little piece of striped prototyping PCB board with standard 2.54mm spacing. For the dongle with both male and female connectors, a PCB of size 4x19 holes is needed.
Note that there are various versions of the 3-digit led voltmeters available, having different display colors and min/max voltages. Also there are versions with 2 wires (supply voltage is measured) and 3 wires (supply voltage separated from measured voltage). For monitoring the USB voltage, both 2- and 3-wire versions can be used. For building a small USB powered voltmeter with external probes, of course a 3-wire version is required. For monitoring the USB voltage, it's best to use a voltmeter module which displays voltages below 10V with 2 decimals.
On the front, the box has a cutout for a standard 0.36" 3-digit voltmeter module. These modules are easily available and cost less than $US 2 on eBay. The back of the box is equipped with a sliding cover which gives access to the voltmeter, the USB connectors and/or connection cables. The ends of the box contain cutouts for a female and a male USB connector, or alternatively holes for the corresponding cables.
This box can be used as a testing device for monitoring directly the USB voltage. This is useful to monitor the charging voltage of solar powered USB chargers or also to detect voltage drops in the USB 5V line due to overloading of the USB power source. In particular I use this type of voltmeter with my foldable 5V solar panel to monitor the output level of the solar cells.
Another use of the box is to build a simple USB powered voltmeter. In this case, the voltmeter is powered through the male USB connector on the one end, while at the other end of the box the cables for the PLUS and MINUS probes are attached. Be careful though, always watch the polarity and measure only battery powered circuits, as the voltmeter does not measure negative voltages and shares the ground level with the USB host!!!
The SCAD source file is, as always, fully parametrized and commented, so that you can adapt it easily to your needs. Ready-to print STL files are provided for different configurations of connectors and/or cables:
male and female usb connectors in the box
male connector on one side, cable on other side
female connector on one side, cable on other side
cabel holes on both sides
The male and/or female connectors are best soldered on a little piece of striped prototyping PCB board with standard 2.54mm spacing. For the dongle with both male and female connectors, a PCB of size 4x19 holes is needed.
Note that there are various versions of the 3-digit led voltmeters available, having different display colors and min/max voltages. Also there are versions with 2 wires (supply voltage is measured) and 3 wires (supply voltage separated from measured voltage). For monitoring the USB voltage, both 2- and 3-wire versions can be used. For building a small USB powered voltmeter with external probes, of course a 3-wire version is required. For monitoring the USB voltage, it's best to use a voltmeter module which displays voltages below 10V with 2 decimals.
Similar models
thingiverse
free
Foldable Solar Panel - Large version by enif
...r cable is for usb charging and just recombines the voltages of the three cells in parallel and ends in a usb charging connector.
thingiverse
free
Project Box for 5V/USB buck converter by grayed_8119
...0v-step-down-led-voltmeter-usb-voltage-converter-buck-module-5v-2a/172841908731?epid=0&hash=item283e2e39fb:g:b30aaoswf-taoa8v
thingiverse
free
Power Supply Enclosure for DP20V2A by svenbeb
...desk. to build it you need the dp20v2a (or similar, two lm2596 for 5v and 3.3 conversion (i used...
thingiverse
free
5V box by KVEL
...g on the go, ...
output equipped with female xt60 conector.
use a male xt60 connector and solder the plugs or wires that you need
thingiverse
free
0v to 100v Voltage Regulator with digital voltmeter and ammeter by 3Dadicto
...female jack 5.5mmx2.1mm.
voltmeter power with 3.7v battery integrated in the box.
switch to disconnect the voltmeter and ammeter.
grabcad
free
4-Wire Female USB Type C connector
...ctor to mount in devices.
this version is the 4-wire version.
this model was manually measured, so keep in mind an error of ~1mm.
grabcad
free
USB TypeC cable connectors
...usb typec cable connectors
grabcad
usb typec cable connectors
male & female
stp files.
thingiverse
free
Discovery 2 Digital clock by Sandman614
...usb module qs-1205cbum-8a v2.01 keywords: 5v 8a usb
12v 3 in 1 car kit thermometer + monitor voltmeter + clock led digital module
thingiverse
free
4.5-40V to 5v usb enclosure with switch box by Gam3t3chElectronics
...sing about.
this is the item i purchased off ebay.
5v 2a usb charger voltmeter step-down dc-dc buck converter 4.5-40v car 12v 24v
thingiverse
free
USB Power Bank for Ryobi 18v One+ battery by Simhopp
...r as shown on the photo.
2x right angle female blade electrical terminal connector
piece of 14 gauge solid copper electrical wire
Enif
3d_sky
free
HYDRA ENIF
...hydra enif
3dsky
poltraona frau
1000x1000
unity_asset_store
$18
Enif Cruiser
...r workflow with the enif cruiser asset from pleiades shipyards. find this & other space options on the unity asset store.
3dbaza
$7
Kompan Enif Game Complex (17747)
...ex (17747)
3dbaza
scene includes: 3d model of the gambling complex kompan enif<br>3dsmax 2016 + corona, textures included.
thingiverse
free
Battery Holder by enif-txoof-webmongersimonsolar2c by SimonSolar2C
...the txoof script which caused a hole underneath.
putting it here so i can make battery holder with his improvement to the markers
thingiverse
free
Reverse battery protection for AA Flexing battery holder by enif
...a dab of glue.
1.6 to 1.8mm thickness works fine. it depends on what material (wire, copper foil, ...) you use for your contacts.
thingiverse
free
Plug for bicycle hub dynamo by enif
...re the inner part is pushed into the outer shell, squeezing the wires for a firm hold. (the last photo shows the original plug.)
thingiverse
free
Simple snap-in ball bearing frame by enif
...imensioned for the standard 608zz type ball bearing, but the scad file can easily be configured for other types of ball bearings.
thingiverse
free
Magnetic Letters & Numbers by enif
... contains the character definitions.
update 2015-10-10: i have now also uploaded the stl files for the lower case characters a-z.
thingiverse
free
Remix of Double Hinged 12864 Full Graphics LCD Frame by enif by FrancescoF
...cd12864 all together, deep enough to fit exp1 and exp2 connectors.
redesigned the support to fit on a v-slot rail 20x20 or 20x40.
thingiverse
free
Eyecaps for Binoculars - fully parametrized by enif
...eed to be flexible when the binoculars are folded for storage, the material of choice for printing the eyecaps is definitely abs.
Dongle
turbosquid
$44
Internet Dongle
...d model internet dongle for download as ma, fbx, max, and obj on turbosquid: 3d models for games, architecture, videos. (1156844)
evermotion
$30
Dongle for V-Ray
...aos group provides innovative rendering solutions for the media, entertainment, and design industries. evermotion 3d models shop.
turbosquid
$19
USB Dongle Enclosure (Thumb Drive)
...losure (thumb drive) for download as 3ds, obj, blend, and stl on turbosquid: 3d models for games, architecture, videos. (1179416)
evermotion
$700
Upgrade from V-ray 1.5 to 3.5 for 3ds max
...need to purchase a new dongle - your current dongle will be reprogrammed to carry v-ray 3. evermotion 3d...
evermotion
$250
V-Ray Standalone 3.0
...the customers from european union. if you don't have dongle key you must buy it (30 eur). evermotion 3d...
evermotion
$1500
V-Ray 3.5 for 3ds Max + 5 Render Nodes
...customers from european union. if you don't have a dongle key you must buy it (30 eur). evermotion 3d...
thingiverse
free
KNX-Dongle by tintsch
...one of those knx-dongles for the ets-software? never again. glue this thing to your dongle and attach a small cord or key hanger.
thingiverse
free
Dongle Connex by Cloudyconnex
...losing your dongles snap each one in and never misplace your dongles again....well unless you lose both of them at the same time.
thingiverse
free
softrf skyview dongle case
...softrf skyview dongle case
thingiverse
case for skyview and dongle in one case
with hole for audio jack
thingiverse
free
Blind String Dongle by Scobro
...blind string dongle by scobro
thingiverse
attach to the end of your blind string when the original dongle breaks!
Voltmeter
turbosquid
$5
Voltmeter
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
turbosquid
$2
Voltmeter
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
turbosquid
$20
ammeter and voltmeter
...and voltmeter for download as unitypackage, max, obj, and fbx on turbosquid: 3d models for games, architecture, videos. (1632311)
3d_export
$20
Amperemeter Voltmeter 3D Model
...tmeter 3d model
3dexport
amperemeter voltmeter meter measurer gauge gage
amperemeter voltmeter 3d model rostislav 85898 3dexport
turbosquid
$15
Vintage Voltmeter by the Jewell Instrument Co.
...nstrument co. for download as ma, 3ds, ige, fbx, 3dm, and dwg on turbosquid: 3d models for games, architecture, videos. (1467894)
3d_export
$5
dt830d lcd digital multimeter electric voltmeter ammeter
...;additional formats: fbx, obj, 3ds, stl<br>textures in zip-archive: dt830d_diffuse.png(2000x2000), piece-nb-01(environment)
3d_export
$5
Meter
...meter 3dexport analog voltmeter and analog ampere meter is created with 3ds max...
3d_export
$20
SMITHS gauge collection 3D Model
...model 3dexport gauge indicator cluster smiths car vehicle ammeter voltmeter water temp oil presure clock fuel rpm speed smiths...
thingiverse
free
Voltmeter
...voltmeter
thingiverse
voltmeter voor opencircuit
unity_asset_store
$5
Voltmeter
...ur workflow with the voltmeter asset from dmitry adashev. find this & other electronics options on the unity asset store.
Digit
turbosquid
$20
Digits
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
turbosquid
$79
Digital piano
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
turbosquid
$70
Digital Cameras
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
turbosquid
$50
Digital Indicator
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
turbosquid
$49
Digital Clock
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
turbosquid
$49
Digital Printer
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
turbosquid
$39
Digital scales
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
turbosquid
$25
Digital Durometer
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
turbosquid
$25
Digital Scales
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
turbosquid
$25
Digital 21
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
3
turbosquid
$10
Mountain Bike 3 -3 of 3
...model mountain bike 3 (#3 of 3) for download as fbx and blend on turbosquid: 3d models for games, architecture, videos. (1438752)
turbosquid
$6
Rock 3-3
...urbosquid
royalty free 3d model rock 3-3 for download as obj on turbosquid: 3d models for games, architecture, videos. (1628065)
turbosquid
$29
Books 150 pieces 3-3-3
...books 150 pieces 3-3-3 for download as max, obj, fbx, and stl on turbosquid: 3d models for games, architecture, videos. (1384033)
turbosquid
$3
Genesis 3 Clothing 3
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
3d_export
$5
hinge 3
...hinge 3
3dexport
hinge 3
3ddd
$1
Розетка 3
...розетка 3
3ddd
розетка
розетка 3
turbosquid
$50
is-3
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
turbosquid
$10
Mountain Bike 3 -2 of 3
...model mountain bike 3 (#2 of 3) for download as fbx and blend on turbosquid: 3d models for games, architecture, videos. (1438750)
turbosquid
$10
Mountain Bike 1 -3 of 3
...model mountain bike 1 (#3 of 3) for download as fbx and blend on turbosquid: 3d models for games, architecture, videos. (1438743)
3d_export
$5
3 CATS
...3 cats
3dexport
3 cats pen holder