2 layers48.5 × 27.5 mm
Led backlight controls
LongLiveCHIEF/led-backlighting-controller
This project is designed to control a strip of ws2812 LED's that serve to backlight wall-hung art.
7 parts3
2 layers63 × 53 mm
Led backlight
LongLiveCHIEF/led-backlighting-controller3This project is designed to control a strip of ws2812 LED's that serve to backlight wall-hung art.
- Size
- 63 × 53 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 19
- Nets
- 21
- Pads
- 69
- Tracks, vias
- 120, 13
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 10 Apr 2021
- Updated
- 4 Sep 2021
Overview
Led backlight is an open-source printed circuit board by LongLiveCHIEF, from the LongLiveCHIEF/led-backlighting-controller repository on GitHub. It is a 2-layer board of 63 × 53 mm with 19 parts on 21 nets, routed with 120 tracks and 13 vias.
It is built around the AMS1117-3.3 and BSS138. Its parts include 6 capacitors, 3 resistors, 3 ICs, 3 connectors and 1 transistor. It belongs with the SAM D and SAM boards of this library.
Main components
2
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
BSS138
SOT-23-55℃~+150℃ 1 N-channel 1.1Ω@10V、1.2Ω@4.5V 1.2V 1.7nC@10V 17.5pF 340mA 350mW 50V 6.5pF N-Channel SOT-23 MOSFETs ROHShongjiachengMOSFETs
README
README.mdLED Backlighting Controller
This project is designed to control a strip of ws2812 LED's that serve to backlight wall-hung art.
At the moment, in it's earliest viable release form, it has one momentary push button that is used to cycle through the available solid color lighting choices.
Future updates for this project will support a potentiometer for dimming, and various animation modes.
Build and Flash
cargo build --release
cargo hf2 --releaseVideo Demo
Electrical Schematic
Power Usage
Power values below from ws2812 strip of 20 led's
| Color | mA @ max brightness | mA @ 50% brightness | mA @ 10% brightness |
|---|---|---|---|
| WHITE | 14.30 | 7.26 | 2.05 |
| RED | 5.28 | 3.13 | 1.74 |
| GREEN | 3.11 | 2.25 | 1.65 |
| BLUE | 5.26 | 3.15 | 1.73 |
Parts
19| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 10k | Resistor_SMD:R_0805_2012Metric | R1, R2 |
| 2 | 10uF | Capacitor_SMD:C_0805_2012Metric | C2, C6 |
| 2 | 22uF | Capacitor_Tantalum_SMD:CP_EIA-3528-12_Kemet-T | C1, C5 |
| 2 | 330uF | Capacitor_Tantalum_SMD:CP_EIA-3528-12_Kemet-T | C3, C4 |
| 2 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U1, U3 |
| 2 | jst_xh_conn_1x04_horizontal | initeq:jst_xh_conn_1x04_horizontal | J2, J3 |
| 1 | BSS138 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | R_0805_2012Metric | Resistor_SMD:R_0805_2012Metric | R3 |
| 1 | R_POT_US | initeq:jst_xh_conn_1x03_horizontal | RV1 |
| 1 | SW_MEC_5E | Button_Switch_THT:SW_PUSH-12mm | SW1 |
| 1 | SeeeduinoXIAO | Seeeduino XIAO KICAD:Seeeduino XIAO-MOUDLE14P-2.54-21X17.8MM | U2 |
| 1 | jst_xh_conn_1x02_horizontal | initeq:jst_xh_conn_1x02_horizontal | J4 |
The 18 most common of 19 parts.
Questions
How big is the Led backlight PCB?
It measures 63 × 53 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Led backlight use?
19 parts, built around the AMS1117-3.3 and BSS138. 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 Led backlight KiCad files?
From the LongLiveCHIEF/led-backlighting-controller repository on GitHub, at the commit this page was made from: the board is kicad/led-backlight/led-backlight.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Led backlight design in my own project?
Its repository states no licence, so its author keeps all rights: ask LongLiveCHIEF before reusing the design.
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