Article
I’ve Got the USB Power
But how much in milliamps?
This small tool allows you to monitor current consumed by any USB device plugged into your PC, showing the value on a voltmeter module. Alternatively, why not trace it on the oscilloscope?
Materials
Gerber file
CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.
Elektor recommends the Elektor PCB Service service from its business partner Eurocircuits or AISLER as the best services for its own prototypes and volume production.
The use of our Gerber files is provided under a modified Creative Commons license. Creative Commons offers authors, scientists, educators and other creatives the freedom to handle their copyright in a more free way without losing their ownership.
PCB
Extra info / Update
Note: Since the original publication of this project/article, some of the components, software elements, webpages and other elements might have been updated or changed.
Component list
Resistors
R1 = 0.05Ohm 1W 1%, Welwyn OAR1-R050FI (Farnell # 1200363)
R2 = 18kOhm (SMD 0805)
R3 = 2.00kOhm (SMD 0805)
Capacitors
C1 = 100nF X7R (SMD 0805)
Semiconductors
IC1 = TSC101A, TSOP-5 case
Miscellaneous
K1 = USB-A male connector (plug), PCB mount, through hole
K2 = USB-A female connector (socket), PCB mount, through hole
MOD1 = Voltcraft 70004 LCD panel meter module; Conrad-Uk.com # 121065-89
PCB # 110568-1
R1 = 0.05Ohm 1W 1%, Welwyn OAR1-R050FI (Farnell # 1200363)
R2 = 18kOhm (SMD 0805)
R3 = 2.00kOhm (SMD 0805)
Capacitors
C1 = 100nF X7R (SMD 0805)
Semiconductors
IC1 = TSC101A, TSOP-5 case
Miscellaneous
K1 = USB-A male connector (plug), PCB mount, through hole
K2 = USB-A female connector (socket), PCB mount, through hole
MOD1 = Voltcraft 70004 LCD panel meter module; Conrad-Uk.com # 121065-89
PCB # 110568-1
Discussion (0 comments)