HardLabs

Usb power stick

florisvde·usb-power-stick·KiCad/usb-power-stick/usb-power-stick.kicad_pcb

Usb power stick PCB layout, top view — open source board by florisvde

About the Usb power stick PCB

Usb power stick is an open source PCB design by florisvde, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 42.7 × 17.8 mm, with 14 components from 12 distinct parts.

Other key parts include the CH340C and 74HC74. By type, the board carries 4 capacitors, 4 resistors, 2 ICs, 2 connectors, 1 transistor and 1 diode.

It belongs with the usb & debug tools designs in this gallery.

From the project

A USB stick to control power to a USB powered device from a PC or SBC.

The USB Power Stick solves that problem neatly by providing the switched power on a USB Type A socket.

The Stick is used to turn an IKEA HÅRTE light on and off using a Python script running on a Raspberry Pi. The light is used to illuminate a 3D printer, controlled by Octoprint, so a webcam can track the printer's progression during the night.

The RTS line of the serial converter can be controlled from a computer while the port is open. Therefore the RTS line is connected to the flip flop's (FF) data input (D) and the TX line to the FF's clock input (C). By sending a character the FF…

Usb power stick, from the project README
From the project README

Main components on the Usb power stick

CH340C74HC74

Usb power stick bill of materials (BOM)

14 components, 12 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
CH340C
U1
1
74HC74
U2
1
IRLML2803TRPBF
Q1
1
48037-0001
J1
1
67643-0910
J2
1
LED
D1
2
100N
100n
C1, C3
1
10N
10n
C2
1
1u
C4
2
10K
10k
R1, R3
1
330
100
R2
1
330
470
R4

Usb power stick design files

The KiCad project lives in the florisvde/usb-power-stick repository on GitHub; these links point at the commit this page was built from.

Usb power stick: common questions

How big is the Usb power stick PCB?

The Usb power stick measures 42.7 × 17.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Usb power stick?

14 components, from 12 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Usb power stick design files?

From the florisvde/usb-power-stick repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Usb power stick design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which florisvde chose for the repository.

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