4 layers178.8 × 171.2 mm
Audio Amplifier
anasarif23/Spectrum-Audio-Amp
Stereo audio preamp with EQ, spectrum display, and class-D power amplifier — designed in KiCad.
248 parts
2 layers82.1 × 64 mm
LEDCONTROL
aoishik/AOILED1A WLED(Audio Reactive) Based LED Strips Controller for 12v LED Strips
- Size
- 82.1 × 64 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 26
- Nets
- 30
- Pads
- 88
- Tracks, vias
- 108, 5
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 17 Apr 2026
- Updated
- 9 May 2026
Overview
LEDCONTROL is an open-source printed circuit board by aoishik, from the aoishik/AOILED repository on GitHub. It is a 2-layer board of 82.1 × 64 mm with 26 parts on 30 nets, routed with 108 tracks and 5 vias.
It is built around the SN74AHCT125N, LM2596S-5.0 and PJ-102A. Its parts include 6 capacitors, 3 ICs, 3 connectors, 2 diodes and 1 resistor. It belongs with the audio and music and lEDs and displays boards and the ESP32 boards of this library.
Main components
3
SN74AHCT125N
DIP-14-40℃~+85℃ 1 20uA 4 4.5V~5.5V 74AHCT 8mA 8mA Tri-State Unidirectional DIP-14 Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, Transceivers
LM2596S-5.0
TO-263-5-40℃~+125℃@(TJ) 1 150kHz 3A 4.5V~40V 5V 5mA Buck Buck Built-in Fixed No TO-263-5 DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
PJ-102A
--25℃~+85℃ 11mm 14.4mm 2.5A 24V 2mm 6.4mm 9mm DC Power Jack Right Angle - DC Power Connectors ROHSCUIDC Power Connectors
README
README.mdAOILED
A WLED(Audio Reactive) Based LED Strips Controller for 12v LED Strips
Inspiration
I wanted to create a LED strip controller that could be used to control 12v WS2811 LED strips. It also supports audio based effects using WLED'S Audio Reactive Mode. I wanted to use and test the WLED Firmware also.
Challenges
Believe it or not, this was my third time using Fusion 360 and KiCad! I watched numerous tutorials and guides and did a lot of googling, but in the end, I'm pretty proud of the final product. I had the most struggle figuring out the tolerances and dimensions. Also in KiCad, I had a lot of trouble with footprints and making sure everything was aligned properly and the traces were correct(but it became a little long traces and some may not look good).
How To Use This
- STEP 1: Buy all the things listed in the BOM, print the case and also order the PCB.
- STEP 2: Flash WLED to the XIAO.
- STEP 3: Solder the components to the PCB and assemble the case.
- STEP 4: Use a 12v DC Power Supply to power the PCB and connect the LED strip to the PCB via the JST-XH connectors i.e. one end to the PCB and solder it and the other to the LED strip via its JST-XH connector.
- STEP 5: Install the WLED App on your phone and connect to the WLED Network(WLED-AP) and configure it to connect to your WiFi Network and change the type of LEDs in the settings.
- STEP 6: Do Anything With It and have fun! Thank You! Also Please give a star to this poor fellow if you like the project. Thank You Again!
Specifications
BOM (from BOM.csv):
Some of the products in the BOM are more than required because Robu doesnot allow products to be bought under Rs. 10. Thank You For Understanding.
| Name | Qty | Purpose | Cost (USD) | Link | Distributor |
|---|---|---|---|---|---|
| JST SM 3pin Male | 1 | For connecting the LED Strips | $0.08 | Buy | Quartz Components |
| JST SM 3pin Female | 1 | For connecting the LED Strips | $0.08 | Buy | Quartz Components |
| 24AWG High Voltage Silicone Wire 3000V - Red | 1 | Connecting the INMP441 to the PCB | $0.20 | Buy | Robu |
| PCB | 1 | 2-layers PCB | $11.85 | Buy | JLCPCB |
| 3d Printing of Case Shipping | 1 | For the Case Shipping Charges by Souptik Samanta | $3.25 | Reference | Souptik Samanta via Printing Legion |
| WS2811 Neopixel LED Strip 60LED/MTR - 12V Addressable LED Strip (5 Meter Pack) | 1 | LED | $6.60 | Buy | Quartz Components |
| 24AWG High Quality Ultra Flexible Silicone Wire - Yellow | 2 | Connecting the INMP441 to the PCB | $0.20 | Buy | Robu |
| 24AWG High Quality Ultra Flexible Silicone Wire - Blue | 2 | Connecting the INMP441 to the PCB | $0.20 | Buy | Robu |
| M3 X 25mm Hex (Allen) CSK SS 304 Screw (Dia. 3mm, Length 25mm) | 4 | Screws | $0.15 | Buy | OnlyScrews |
| M3 X 6mm Brass Threaded Inserts (Dia. 3mm, Length 6mm) | 4 | Screws Inserts | $0.15 | Buy | OnlyScrews |
| SN74AHCT125N | 1 | Level Shifting of Data | $1.10 | Buy | Robu |
| 68 ohms resistor | 44 | Resistance | $0.15 | Buy | Robu |
| XIAO ESP32S3 | 1 | MCU | $9.90 | Buy | RoboCraze |
| INMP441 I2S Microphone | 1 | For Audio | $2.10 | Buy | Robo Craze |
| 1n5822 Diode | 2 | Diode | $0.51 | Buy | Robu |
| LM2596S-5.0 | 1 | Step Down Voltage | $0.73 | Buy | Robu |
| SRR1208-330YL-BOURNS-2.8A 33uH ±15% 3.8A SMD, 12.7×12.7mm Power Inductor | 1 | 12v to 5v | $1.25 | Buy | Robu |
| Nichicon-220uF 50V | 2 | Decoupling | $0.50 | Buy | Robu |
| Nichicon 470uf 50v | 3 | Decoupling | $1.05 | Buy | Robu |
| 100nf Disc Capacitor | 8 | Decoupling | $0.10 | Buy | Robu |
| PJ-102A | 2 | 12v Power Input (QTY is 2 because minimum order quantity is 2) | $3.23 | Buy | Lion Circuits |
| Shipping | 1 | Shipping Charges | $1.32 | N/A | Shipping Charges |
| TAX | 1 | Tax | $1.30 | N/A | Indian Govt. |
Others:
- WLED Firmware
- PCB Gerber Files
- Case STL files for 3D printing
| Schematic | PCB Layout |
|---|---|
 |  |
| Case Top | Case Bottom |
|---|---|
 |  |
| Assembled Case | PCB VIEW |
|---|---|
 |  |
Note: The XIAO is not meant to be connected by the user so it is inside the case and not available for the user to connect to. The user can flash the firmware to the XIAO before assembling the case and then assemble the case and use it.
Notes
The firmeare I used is WLED. It is a premade firmare by Aircoookie and it is open source. Here is the link to it: Github | Wiki | Flasher(Official) | Flasher(Third Party)
Thank You for Understanding.
Thanks For Reading! Also leave a star if you like the project! ⭐
Parts
26| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 470µF | Capacitor_THT:CP_Radial_D12.5mm_P5.00mm | C2, C4, C5 |
| 3 | G*** | akemi:010_hearts_09mm | WLED, WLED, WLED |
| 2 | 1n5822 | Diode_THT:D_DO-201AD_P15.24mm_Horizontal | D1, D2 |
| 2 | 220µF | Capacitor_THT:CP_Radial_D10.0mm_P5.00mm | C3, C6 |
| 1 | 100nF/0.1µF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C1 |
| 1 | 33µH | SRR1208-330YL:IND_BOURNS_SRR1208 | L1 |
| 1 | 62-100 Ohms | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | G*** | akemi:050_dev_06mm | WLED |
| 1 | G*** | akemi:999_wled_12mm | WLED |
| 1 | INMP441_Conn | Connector_Wire:SolderWire-0.25sqmm_1x06_P4.5mm_D0.65mm_OD2mm | J3 |
| 1 | LED_Conn | Connector_Wire:SolderWire-0.5sqmm_1x03_P4.8mm_D0.9mm_OD2.3mm | J2 |
| 1 | LM2596S-5 | Package_TO_SOT_SMD:TO-263-5_TabPin3 | U3 |
| 1 | LOGO | LOGO:AKlogo | G*** |
| 1 | PJ-102A | Connector_BarrelJack:BarrelJack_CUI_PJ-102AH_Horizontal | J1 |
| 1 | SN74AHCT125N | SN74ahct125n:N14 | U1 |
| 1 | XIAO-ESP32-S3-DIP | OPL_XIAO:XIAO-ESP32S3-DIP | U2 |
The 22 most common of 26 parts.
Questions
How big is the LEDCONTROL PCB?
It measures 82.1 × 64 mm and has 2 copper layers, 1.6 mm thick.
What parts does the LEDCONTROL use?
26 parts, built around the SN74AHCT125N, LM2596S-5.0 and PJ-102A. 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 LEDCONTROL KiCad files?
From the aoishik/AOILED repository on GitHub, at the commit this page was made from: the board is PCB/LEDCONTROL.kicad_pcb and its schematic PCB/LEDCONTROL.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the LEDCONTROL design in my own project?
Its repository states no licence, so its author keeps all rights: ask aoishik before reusing the design.
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