2 layers75 × 55 mm
Wellfed bench
Isaac-Duarte/wellfed
Open firmware that runs the PETLIBRO Granary PLAF103 pet feeder on your own Wi-Fi: no cloud, no account. Early and in testing.
93 parts8MIT
2 layers95 × 65 mm
A small PCB with step-down for use with WLED firmware
- Size
- 95 × 65 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 64
- Nets
- 42
- Pads
- 169
- Tracks, vias
- 387, 180
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 26 Dec 2021
- Updated
- 26 Dec 2021
Overview
Wled is an open-source printed circuit board by 3komma3volt, from the 3komma3volt/wled-controller repository on GitHub, published under the MIT licence. It is a 2-layer board of 95 × 65 mm with 64 parts on 42 nets, routed with 387 tracks and 180 vias.
It is built around the 74LVC2G125DP, ESP-12F and LM22677TJ-5.0, with the FDN337N and SK56L-TP among its other parts. Its parts include 16 resistors, 14 capacitors, 7 connectors, 4 ICs and 4 diodes. It belongs with the ESP8266 boards of this library.
Main components
5
74LVC2G125DP
TSSOP-8-40℃~+125℃ 1 1.65V~5.5V 1.9ns@5V,50pF 2 32mA 32mA 4uA 74LVC Schmitt trigger Tri-State Unidirectional TSSOP-8 Buffers, Drivers, Receivers, Transceivers ROHSNexperiaBuffers, Drivers, Receivers, Transceivers
ESP-12F
SMD,24x16mm-40℃~+85℃ -96dBm 15dBm 2.4GHz 3.3V 375mA 55mA PCB UART WIFI4 SMD,24x16mm WiFi Modules ROHSDOITWiFi Modules
LM22677TJ-5.0
TO-263-7-40℃~+125℃@(TJ) 1 3.4mA 4.5V~42V 500kHz 5A 5V Buck Buck Built-in Fixed No TO-263-7 DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
FDN337N
SOT-23-55℃~+150℃ 1 N-channel 120pF 2.2A 300pF 30V 400mV 500mW 65mΩ@4.5V 80pF SOT-23 MOSFETs ROHSTECH PUBLICMOSFETs
SK56L-TP
DO-214AB(SMC)-55℃~+150℃ 1 Independent 100A 100uA@60V 5A 60V 750mV@5A DO-214AB(SMC) Schottky Diodes ROHSMicro Commercial ComponentsSchottky Diodes
README
README.mdwled-controller
A small ESP8266 controller with step-down for use with WLED firmware made with KICAD 6
Intro
This board was designed for a christmas lightshow and 17 of them were used. They were supplied from a central 24V power supply and the supply was chained from prop to prop. This made wireing very easy. The included 5V regulator supplies up to 5A which is pretty enough for some light props. The KICAD files include LCSC component numbers for direct ordering at JLCPCB The board shape is made for some cheap enclosures
Usage
First decide if you want to use the voltage regulator. In some cases, you need more power and then you can remove/not populate the U4 regulator and solder the 5V_Bridge1 on the board. Then the VIN supply must not more than 12V! With the brige, the voltage on the screw terminals is the same than VIN. So you could use 12V pixels whith this board or a powerful 5V supply. The ESP is supplied from an other voltage regulator. Without brige, the voltage regulator has to be mounted. Use following fusing for F1:
- 24V input: 1.3A
- 5V or 12V input (with bridge and no U4 mounted): 5A or greater, accordingly to your used power supply / or pixels An OLED can be mounted but have to be defined in the firmware A MOSFET can be populated and switch some small loads (connected to J3) and have to be defined in firmware
Programming
For programming an USB to UART converter is needed. Use following steps:
- EITHER supply from VIN or supply 3.3V to J2 (e.g. from an USB/UART converter)
- Connect GND, RX, TX from the USB/UART to J2
- Press and hold PG, press and release RS, release RS. The EPS should now be in programming mode
- Program accordingly WLED manual and press RS after programming. Now the board should open an AP
Parts
64| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 10k | Resistor_SMD:R_0603_1608Metric | R1, R2, R5, R7, R9, R10, R14 |
| 6 | 100n | Capacitor_SMD:C_0603_1608Metric | C3, C5, C6, C8, C12, C14 |
| 3 | 220u | Capacitor_SMD:CP_Elec_8x10 | C2, C10, C11 |
| 3 | Fiducial | Fiducial:Fiducial_0.75mm_Mask1.5mm | FID1, FID2, FID3 |
| 3 | LED | LED_SMD:LED_0603_1608Metric | D2, D3, D4 |
| 3 | SW_Push | Button_Switch_SMD:SW_SPST_CK_RS282G05A3 | SW1, SW2, SW3 |
| 3 | TestPoint | TestPoint:TestPoint_THTPad_D1.5mm_Drill0.7mm | TP3, TP4, TP7 |
| 2 | 10u | Capacitor_SMD:C_0805_2012Metric | C4, C7 |
| 2 | 1k | Resistor_SMD:R_0603_1608Metric | R6, R15 |
| 2 | 220 | Resistor_SMD:R_0603_1608Metric | R11, R12 |
| 2 | 30@100MHz | Inductor_SMD:L_1206_3216Metric | L2, L3 |
| 2 | 470 | Resistor_SMD:R_0603_1608Metric | R8, R13 |
| 2 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2 |
| 1 | 100u | Capacitor_SMD:C_1210_3225Metric | C9 |
| 1 | 10n/50V | Capacitor_SMD:C_0603_1608Metric | C13 |
| 1 | 220u/35V | Capacitor_SMD:CP_Elec_8x10 | C1 |
| 1 | 22@100MHz | Inductor_SMD:L_0603_1608Metric | L4 |
| 1 | 2k | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 50k | Resistor_SMD:R_0603_1608Metric | R16 |
| 1 | 680 | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | 6A | FX0321:FX0321 | F1 |
| 1 | 6u8 | Inductor_SMD:L_10.4x10.4_H4.8 | L1 |
| 1 | 74LVC2G125 | Package_SO:TSSOP-8_3x3mm_P0.65mm | U2 |
| 1 | AP1117-33 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U3 |
| 1 | Conn_01x03_Male | Connector_JST:JST_PH_B3B-PH-K_1x03_P2.00mm_Vertical | J3 |
| 1 | Conn_01x05_Male | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J2 |
| 1 | ESP-12F | RF_Module:ESP-12E | U1 |
| 1 | FDN337N | Package_TO_SOT_SMD:SOT-23 | T1 |
| 1 | LED Injection | libs:OSTTC020162 | J5 |
| 1 | LED Strip Data | libs:OSTTC020162 | J7 |
| 1 | LED Strip Power | libs:OSTTC020162 | J4 |
| 1 | LM22677TJ-5 | Package_TO_SOT_SMD:TO-263-7_TabPin4 | U4 |
| 1 | Power IN | libs:OSTTC020162 | J1 |
| 1 | Power OUT | libs:OSTTC020162 | J6 |
| 1 | SK56L-TP | Diode_SMD:D_SMC | D1 |
| 1 | SSD1306 | SSD1306:128x64OLED | OLED1 |
| 1 | TestPoint_2Pole | TestPoint:TestPoint_2Pads_Pitch5.08mm_Drill1.3mm | 5V_Bridge1 |
Questions
How big is the Wled PCB?
It measures 95 × 65 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Wled use?
64 parts, built around the 74LVC2G125DP, ESP-12F, LM22677TJ-5.0 and FDN337N. 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 Wled KiCad files?
From the 3komma3volt/wled-controller repository on GitHub, at the commit this page was made from: the board is wled.kicad_pcb and its schematic wled.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Wled design in my own project?
Its repository publishes it under the MIT 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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