4 layers50 × 65 mm
FeroFlyF405
Ozonised/FeroFlyF405
FeroFlyF405 an open source STM32F405 based flight controller running INAV
150 parts44CERN-OHL-P-2.0
4 layers37.8 × 25 mm
LED Controller
Electro707/addressable_led_controllerAn addressable LED controller
- Size
- 37.8 × 25 mm
- Copper layers
- 4
- Thickness
- 1.61 mm
- Parts
- 35
- Nets
- 57
- Pads
- 164
- Tracks, vias
- 211, 43
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 25 Jun 2023
- Updated
- 9 Sep 2024
Overview
LED Controller is an open-source printed circuit board by Electro707, from the Electro707/addressable_led_controller repository on GitHub, published under the GPL-3.0 licence. It is a 4-layer board of 37.8 × 25 mm with 35 parts on 57 nets, routed with 211 tracks and 43 vias.
It is built around the ESP32-PICO-D4, AP62200WU-7-52 and 74LVCH2T45DC, with the SMF15A and SP0505BAHTG among its other parts. Its parts include 12 capacitors, 5 resistors, 5 ICs, 5 connectors and 3 inductors. It belongs with the ESP32 and RISC-V boards of this library.
Main components
5
ESP32-PICO-D4
QFN-48-EP(7x7)-40℃~+85℃ -97dBm 150Mbps 2.412GHz~2.484GHz 2.4GHz 2.7V~3.6V 20dBm Bluetooth、WiFi SPI、I2C transceiver QFN-48-EP(7x7) RF Transceiver ICs ROHSEspressif SystemsRF Transceiver ICs
AP62200WU-7-52
TSOT-26-40℃~+85℃@(TA) 1 2A 4.2V~18V 740kHz 800mV~7V Adjustable Buck Buck Built-in Yes TSOT-26 DC-DC Converters ROHSDiodes IncorporatedDC-DC Converters
74LVCH2T45DC
VSSOP-8-0.5mm-40℃~+125℃ 1 1.2V~5.5V 1.2V~5.5V 2 420Mbps Bidirectional Power-Off Protection Tri-State VSSOP-8-0.5mm Translators, Level Shifters ROHSNexperiaTranslators, Level Shifters
SMF15A
SOD-123FLESD And Surge Protection (TVS/ESD)hongjiachengSP0505BAHTG
SOT-23-610A@8/20us 15V 1uA 35pF 5.5V 6V ESD IEC 61000-4-2、IEC 61000-4-4 SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)
README
README.mdAddressable LED Strip Controller
Rev 4
This is the repository for my LED strip controller. This LED controller is capable of controlling any addressable LED strip (1 or two data wires).
Image of real PCB Rev4 coming soon!
Firmware
This controller uses the WLED firmware. Instructions to upload the firmware unto the board can be found on their webpage.
Thru J2, you can connect an ESP32 programmer such as the ESP-Prog. You can also make your own "automatic downloader" (i.e not requiring to reset the device and selecting boot mode when uploading) circuit. Details of which can be found on Espressif's ESP-Prog docs on Automatic Downloading Function.
PI Matching Network Values
Rev 2
The PI Matching network values have been calculated by measuring the impedance of the antenna mounted on a bare board. As image of the setup is shown below:
The impedance was measured with my handy NanoVNA V2+4. The measured impedance at 2.45Ghz, shown below, was 21.9+5.48jΩ. Plugging those numbers into a PI matching network calculator, we get 2.09nH for L, 2.65pF for Cs, and 3.99pF for Cl. The values have been rounded to the nearest available values that is reasonable to buy (this is RF anyways, I could have sneezed and the values would be slightly off).
Rev 4
At 2.45Gz, impedance was 17.5-35.8jΩ. We get 2.3194nH for L, 3.898pF for Cs, and 4.429pF for Cl.
Rev 3 Branch-Off
Rev 3 of this project was a fully-featured POE version of this controller. I since has made this revision, which is closer to the original small design, so I decided to branch Rev3 off to it's own repo: Electro707/addressable_led_controller_poe
Rev 4 Design Reasonings
Over at DesignConsiderations.md, I wrote some design reasonings as to why some things are the way they are designed for Rev 4 of the board. Feel free to have a look, keep in mind they are more internal notes if anything.
Parts
35| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 0.1u | Capacitor_SMD:C_0603_1608Metric | C9, C17, C26, C27 |
| 4 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C1, C2, C6, C8 |
| 2 | 10k | Resistor_SMD:R_0603_1608Metric | R2, R3 |
| 2 | 22uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C3, C5 |
| 2 | 74LVCH2T45DC | Package_SO:VSSOP-8_2.3x2mm_P0.5mm | U3, U4 |
| 1 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4 |
| 1 | 2.2nH | Inductor_SMD:L_0603_1608Metric | L2 |
| 1 | 2.2pF | Capacitor_SMD:C_0603_1608Metric | C10 |
| 1 | 3.3uH | Inductor_SMD:L_1206_3216Metric_Pad1.22x1.90mm_HandSolder | L3 |
| 1 | 31.6k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | 470 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R7 |
| 1 | 4pF | Capacitor_SMD:C_0603_1608Metric | C11 |
| 1 | AP62200WU-7 | Package_TO_SOT_SMD:TSOT-23-6 | U2 |
| 1 | Antenna_Chip | RF_Antenna:Johanson_2450AT43F0100 | AE1 |
| 1 | Barrel_Jack | Connector_BarrelJack:BarrelJack_Horizontal | J1 |
| 1 | Conn_01x06_Female | Connector:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_Vertical | J2 |
| 1 | ESP32-PICO-D4 | Package_DFN_QFN:QFN-48-1EP_7x7mm_P0.5mm_EP5.3x5.3mm | U1 |
| 1 | Jumper_2_Bridged | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP1 |
| 1 | L_Ferrite | Inductor_SMD:L_0805_2012Metric | L1 |
| 1 | MCP1792x-5002xCB | Package_TO_SOT_SMD:SOT-23 | U5 |
| 1 | Polyfuse | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | SMF15A | Diode_SMD:D_SMF | D1 |
| 1 | SP0505BAHT | Package_TO_SOT_SMD:SOT-23-6 | D2 |
| 1 | Screw_Terminal_01x02 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_PT-1,5-2-3.5-H_1x02_P3.50mm_Horizontal | J5 |
| 1 | Screw_Terminal_01x02 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J3 |
| 1 | Screw_Terminal_01x04 | TerminalBlock_TE-Connectivity:TerminalBlock_TE_282834-4_1x04_P2.54mm_Horizontal | J6 |
Questions
How big is the LED Controller PCB?
It measures 37.8 × 25 mm and has 4 copper layers, 1.61 mm thick.
What parts does the LED Controller use?
35 parts, built around the ESP32-PICO-D4, AP62200WU-7-52, 74LVCH2T45DC and SMF15A. 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 Controller KiCad files?
From the Electro707/addressable_led_controller repository on GitHub, at the commit this page was made from: the board is PCB/LED_Controller.kicad_pcb and its schematic PCB/LED_Controller.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the LED Controller 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).
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