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2 layers36.2 × 23.2 mmUsbAmpel, the printed circuit board in 3D

CH552 / CH551 USB State Light

Size
36.2 × 23.2 mm
Copper layers
2
Thickness
1.6 mm
Parts
22
Nets
17
Pads
106
Tracks, vias
133, 14
Pours
2
Routed
Yes
KiCad
KiCad 5 (file 20190331)
Created
29 Apr 2019
Updated
7 Jul 2019

Overview

UsbAmpel is an open-source printed circuit board by andreasb242, from the andreasb242/CH55xG-StateLight repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 36.2 × 23.2 mm with 22 parts on 17 nets, routed with 133 tracks and 14 vias.

It is built around the WS2812B. Its parts include 7 diodes, 4 capacitors, 3 connectors, 2 resistors and 1 IC. It belongs with the 8051 (CH55x, STC, AT89) boards of this library.

Main components

1

README

README.md

CH55xG-StateLight

CH552 / CH551 USB State Light

Source Code

Tab size is 4 Spaces

PC Software

Basically working on Linux, no Messenger sync yet

Protocol

This is the Target protocol, not 100% ready.

Sended Text

$ Received Text

All Texts are are terminated with \n, \r or Both (don't matter)

Normal Sequence:

i

$TODO

Check if Version is correct.

Set all LEDs:

aRRGGBB

$OK

RRGGBB is an RGB Hex Color This will turn off blink.

Set single LED:

sID RRGGBB

$OK

ID is the LED ID, starting from 0, decimal RRGGBB is an RGB Hex Color This will turn off blink.

Set auto off time after XXX Seconds

aXXX

$OK

If there is no command received within XXX Seconds, turn off LEDs

Ping:

p

$OK

Used to prevent auto turn off

Blink:

tXXX

$OK

Set blink time to TTT * 100ms Defaults to 5, => 500ms blink time.

b255

$OK

Blink all LEDs

bID

$OK

Blink LED ID, ID is decimal

Write config byte:

caaa vvv

$OK

aaa Address: decimal, 0 .. 127 vvv Value: decimal, 0 .. 255

Read config byte:

raaa

$OK vvv

aaa Address: decimal, 0 .. 127 vvv Value: decimal, 0 .. 255

Write value to EEPROM

EEPROM Config

0 - 1: USB VID 2 - 3: USB PID 4: '>' if USB ID SHould be readed

5 - 23: Startup RGB Colors, RRGGBB. 24: '>' if RGB Colors should be read

25 ... n: Serial, Terminated with double 0, FF are ignored

Parts

22
QtyValueFootprintReferences
6WS2812BLED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mmD2, D3, D4, D5, D6, D7
4Mounting_Hole_PADMountingHole:MountingHole_2.7mm_M2.5_Pad_ViaMK1, MK2, MK3, MK4
3100nFCapacitor_SMD:C_0805_2012Metric_Pad1.15x1.50mm_HandSolderC1, C2, C3
110kΩResistor_SMD:R_0805_2012Metric_Pad1.15x1.50mm_HandSolderR1
11kΩResistor_SMD:R_0805_2012Metric_Pad1.15x1.50mm_HandSolderR2
11µFCapacitor_SMD:C_0805_2012Metric_Pad1.15x1.50mm_HandSolderC4
1CH55xGPackage_SO:SOP-16_4.4x10.4mm_P1.27mmU1
1Conn_01x02Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_VerticalJ2
1Conn_01x04Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_VerticalJ3
1LEDLED_SMD:LED_0805_2012Metric_Pad0.97x1.50mm_HandSolderD1
1SW_PushButton_Switch_SMD:SW_SPST_SKQGSW1
1USB_AConnector_USB:USB_A_HorizontalJ1

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Questions

How big is the UsbAmpel PCB?

It measures 36.2 × 23.2 mm and has 2 copper layers, 1.6 mm thick.

What parts does the UsbAmpel use?

22 parts, built around the WS2812B. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the UsbAmpel KiCad files?

From the andreasb242/CH55xG-StateLight repository on GitHub, at the commit this page was made from: the board is Board/UsbAmpel.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the UsbAmpel design in my own project?

Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).