Usb led power
About the Usb led power PCB
Usb led power is an open source PCB design by jkominek, published on GitHub under the Custom license license. It is a 2-layer board measuring 80 × 40 mm, with 15 components from 8 distinct parts.
Other key parts include the CL220N5-G. By type, the board carries 6 connectors, 4 ICs, 2 capacitors, 1 diode and 1 resistor.
It belongs with the audio designs in this gallery.
From the project
Hardware, and some firmware, for acoustic piano to MIDI controller conversion.
This is a little USB-powered board which produces 4 constant current outputs, each fixed to 20mA. Max voltage is 24V. With an LED Vf of 1.5V, that means you can drive <=16-ish LEDs off of each output. If you drive just a single LED off an output, the constant current limiter will be shedding 0.45W. It can probably handle that, but if you want to use an output with fewer than 8 LEDs, consider putting a resistor in series with them. Remember V=IR. I is 20mA. Choose R to eat 50-75% of whatever voltage will be left over after you subtract the forward voltages of the LEDs from 24V.
Main components on the Usb led power
Usb led power bill of materials (BOM)
15 components, 8 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | CL220N5-G | TO-92-2pin_Inline_Narrow_Oval | U1, U2, U3, U4 |
| 1 | USB_B | USB_B | J0 |
| 4 | Conn_01x02_Male | Pin_Header_Angled_1x02_Pitch2.54mm | J1, J2, J3, J4 |
| 1 | Conn_01x02_Male | PinHeader_1x02_P2.54mm_Vertical | J5 |
| 1 | ITX0503SA-H | DCDC-Conv_RECOM_R-78S-0.1 | PS1 |
| 1 | LED | LED_0805_HandSoldering | D1 |
| 2 | CP1_Small | CP_Radial_D8.0mm_P3.50mm | C1, C2 |
| 1 | R_Small_US | R_0805_HandSoldering | R1 |
Usb led power design files
The KiCad project lives in the jkominek/piano-conversion repository on GitHub; these links point at the commit this page was built from.
Usb led power: common questions
How big is the Usb led power PCB?
The Usb led power measures 80 × 40 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Usb led power?
15 components, from 8 distinct parts. The full bill of materials is listed on this page.
Where can I download the Usb led power design files?
From the jkominek/piano-conversion repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Usb led power design in my own project?
It is published under Custom license, which limits how it may be reused; read the license before building on it.
More boards in piano-conversion
STM32Main board
100 × 100 mm148 parts4LCustom license53
STM32ADC Board
92.7 × 83.8 mm100 parts4LCustom license53
STM32Led power
86.4 × 86.4 mm84 parts4LCustom license53
STM32Pedal board
108 × 56 mm43 parts2LCustom license53
Link adapter
77.5 × 40.6 mm38 parts2LCustom license53
Sensorboard tester
83.8 × 83.8 mm33 parts2LCustom license53
STM32Midi board
88 × 45.8 mm31 parts2LCustom license53
Led test bar
174 × 16.5 mm31 parts2LCustom license53
2020-offset-4x
45.5 × 45.3 mm5 parts2LCustom license53
2040-centered-4x-12deg
47 × 48 mm5 parts2LCustom license53
2040-centered-4x
45.5 × 48 mm5 parts2LCustom license53
Similar boards
KLOR
GEIGEIGEIST
160.2 × 118.3 mm79 parts2LGPL-3.01.2k
ButtonsLEDs
shanteacontrols
390 × 37 mm82 parts2LApache-2.0956
USB
52 × 12.6 mm6 parts2LApache-2.0956
Pots
390 × 93 mm75 parts2LApache-2.0956
PicoGUS Hand386
polpo
29.2 × 75.2 mm43 parts4LGPL-2.0800
Snark barker
schlae
231.1 × 106.7 mm193 parts2LNo license687