A WLED controller that blends into the background
Nul is an open-source printed circuit board by Choccy-vr, from the Choccy-vr/nul repository on GitHub. It is a 4-layer board of 11 × 43.2 mm with 30 parts on 50 nets, routed with 246 tracks and 49 vias.
It is built around the ESP32-C3FH4, AMS1117-3.3 and SN74AHCT1G125DBVR(UMW), with the SRV05-4, XRCGB40M000F1S1DR0 and 918-418K2023C40002 among its other parts. Its parts include 13 capacitors, 8 resistors, 5 ICs, 1 connector and 1 inductor. It belongs with the ESP32 and RISC-V boards of this library.
A WLED controller that blends into the background
Nul is a small, compact WLED controller that is meant to go in line with your LED strip. Powered by an ESP32 C3 in a super small 11x40mm package.
| Product Name | Product Description | Product Link | Product Cost | Total |
|---|---|---|---|---|
| PCB | PCB + PCBA | https://jlcpcb.com/ | $47.22 | $54.60 |
| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 0.1uF ceramic | Capacitor_SMD:C_0402_1005Metric | C2, C3, C4, C5, C13 |
| 3 | 10k | Resistor_SMD:R_0402_1005Metric | R1, R2, R3 |
| 3 | 33Ohm | Resistor_SMD:R_0402_1005Metric | R4, R8, R9 |
| 2 | 1.5pF | Capacitor_SMD:C_0402_1005Metric | C9, C10 |
| 2 | 10uf | Capacitor_SMD:C_0402_1005Metric | C11, C12 |
| 2 | 15pF | Capacitor_SMD:C_0402_1005Metric | C7, C8 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R5, R6 |
| 1 | 1uF | Capacitor_SMD:C_0402_1005Metric | C6 |
| 1 | 220uf | Capacitor_SMD:C_1210_3225Metric | C14 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | ESP32-C3FH4 | ESP32-C3FH4:QFN50P500X500X90-33N | U1 |
| 1 | FUC-24F11-SNLB1 | easyeda2kicad:USB-C-SMD_C67380 | USBC1 |
| 1 | L | Inductor_SMD:L_0402_1005Metric | L1 |
| 1 | LED Socket | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J2 |
| 1 | SN74AHCT1G125DBVR | SN74AHCT1G125DBVR:DBV5 | U3 |
| 1 | SRV05-4 | Package_TO_SOT_SMD:SOT-23-6 | U5 |
| 1 | U.FL-R-SMT-1 | easyeda2kicad:RF-SMD_FRF05002-JSS103M | JP2 |
| 1 | XRCGB40M000F1S1DR0 | easyeda2kicad:CRYSTAL-SMD_4P-L2.0-W1.6-BL | U4 |
It measures 11 × 43.2 mm and has 4 copper layers, 1.6 mm thick.
30 parts, built around the ESP32-C3FH4, AMS1117-3.3, SN74AHCT1G125DBVR(UMW) and SRV05-4. 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.
From the Choccy-vr/nul repository on GitHub, at the commit this page was made from: the board is PCB/nul.kicad_pcb and its schematic PCB/nul.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask Choccy-vr before reusing the design.
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