
WLED Matrix
CDFER/Business-Cards
Showcasing a collection of functional PCB business cards, each demonstrating a unique embedded electronics project.

Showcasing a collection of functional PCB business cards, each demonstrating a unique embedded electronics project.
Batch 1 is an open-source printed circuit board by CDFER, from the CDFER/Business-Cards repository on GitHub. It is a 2-layer board of 93 × 173 mm with 479 parts on 220 nets, routed with 15,249 tracks and 374 vias.
It is built around the ESP32-C3FH4, SM4007PL and RB501V-40, with the 0402 ±5% 1K6, SRV05 and 1N5819WS among its other parts. Its parts include 99 resistors, 90 capacitors, 57 diodes, 18 switches and 10 connectors. It belongs with the ESP32, STM32 and RISC-V boards of this library.
Welcome to my PCB business cards, a collection of functional devices showcasing my passion for embedded electronics and microcontrollers. Each card is a unique project demonstrating a specific concept or technology.
Support my work by purchasing a custom CO2 sensor on my website or hiring me for freelance Embedded Electronics projects: https://www.keastudios.co.nz.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 75 | XL-1615RGBC-WS2812B | footprint:LED-SMD_4P-L1.6-W1.5_XL-1615RGBC-WS2812B | RGB1, RGB2, RGB10, RGB11, RGB12, RGB13, RGB14, RGB15, RGB16, RGB17, RGB18, RGB19, RGB20, RGB21, RGB22, RGB23 +59 |
| 20 | 0402,10k | footprint:0402_1005Metric | R2, R4, R5, R10, R20, R22, R25, R34, R37, R41, R44, R45, R48, R49, R51, R57 +4 |
| 20 | 100nF | footprint:0402_1005Metric | C2, C4, C14, C16, C35, C56, C57, C60, C61, C62, C65, C68, C69, C70, C72, C75 +4 |
| 19 | 0402,150 | footprint:0402_1005Metric | R9, R71, R82, R83, R84, R85, R86, R87, R88, R89, R90, R91, R92, R93, R94, R95 +3 |
| 18 | Button SPST 50mA 12V | footprint:SW-SMD_4P-L5.1-W5.1-P3.70-LS6.5-TL-2 | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18 +2 |
| 17 | 0402,1uF,25V,X5R | footprint:0402_1005Metric | C3, C5, C7, C10, C12, C15, C26, C27, C28, C34, C42, C46, C47, C52, C59, C64 +1 |
| 17 | LED | LED_SMD:LED_0603_1608Metric | D4, D5, D6, D7, D8, D10, D11, D12, D13, D14, D32, D33, D34, D35, D36, D37 +1 |
| 17 | RB501V-40 | Diode_SMD:D_SOD-323 | D15, D16, D17, D18, D19, D20, D21, D22, D23, D24, D25, D26, D27, D28, D29, D30 +1 |
| 16 | MountingHole_3.2mm_M3 | MountingHole:MountingHole_3.2mm_M3 | M1, M2, M3, M4, M5, M6, M7, M8, M9, M10, M11, M12, M13, M14, M15, M16 |
| 14 | 0603,Red | footprint:LED0603 | LED4, LED5, LED6, LED7, LED10, LED11, LED12, LED13, LED14, LED15, LED18, LED20, LED21, LED22 |
| 10 | 0402,1.2k | footprint:0402_1005Metric | R13, R14, R23, R27, R29, R33, R59, R60, R72, R77 |
| 8 | clipboard:74cc307d-ef1c-4d55-ab28-7a463adb6a10 | , , , , , , , | |
| 8 | clipboard:29b2475f-d1f9-413a-acd7-ed0fdfac1ce2 | , , , , , , , | |
| 8 | 0603,Yellow | footprint:LED0603 | LED1, LED2, LED3, LED8, LED9, LED16, LED17, LED19 |
| 8 | 330pF | footprint:0402_1005Metric | C1, C8, C9, C18, C66, C67, C71, C80 |
| 6 | 0402,100k | footprint:0402_1005Metric | R19, R26, R46, R55, R76, R78 |
| 6 | 0402,1k | footprint:0402_1005Metric | R21, R24, R47, R52, R53, R64 |
| 6 | 0402,5.1k | footprint:0402_1005Metric | R6, R16, R38, R43, R70, R75 |
| 6 | 0402,680 | footprint:0402_1005Metric | R17, R18, R30, R35, R58, R61 |
| 5 | 0402,100nF,50V,X7R | footprint:0402_1005Metric | C38, C40, C45, C49, C50 |
| 5 | 0402,4.7uF,10V,X5R | footprint:0402_1005Metric | C11, C21, C41, C79, C89 |
| 5 | 0603,470nF,25V,X7R | footprint:0603_1608Metric | C22, C25, C32, C82, C84 |
| 5 | 1.5A Resettable Fuse | Fuse:Fuse_1206_3216Metric | F1, F2, F3, F4, F5 |
| 5 | MountingHole_2.1mm | MountingHole:MountingHole_2.1mm | JLC1, JLC2, JLC3, JLC4, JLC5 |
| 5 | USB_C_Receptacle | extended_parts:TYPE-C-SMD_C9900025773 | J1, J4, J8, J11, J12 |
| 4 | 0402,100 | footprint:0402_1005Metric | R28, R31, R50, R54 |
| 4 | 0402,20pF,50V,C0G | footprint:0402_1005Metric | C13, C17, C54, C58 |
| 4 | 0402,22 | footprint:0402_1005Metric | R1, R11, R73, R74 |
| 4 | 0402,3.9nH,300mA | footprint:0402_1005Metric | L1, L2, L3, L4 |
| 4 | 0402,330 | footprint:0402_1005Metric | R15, R42, R80, R99 |
| 4 | 0402,4.7k | footprint:0402_1005Metric | R3, R63, R66, R68 |
| 4 | Jumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1, JP2, JP3, JP4 |
| 4 | MouseBitesJLCPCB | footprint:MouseBitesJLCPCB | MB1, MB2, MB3, MB4 |
| 3 | 0402,0,1A | footprint:0402_1005Metric | R36, R39, R40 |
| 3 | 0402,330pF,50V,C0G | footprint:0402_1005Metric | C20, C31, C88 |
| 3 | 0603,330pF,50V,C0G | footprint:0603_1608Metric | C24, C36, C83 |
| 3 | 0805,1uF,50V,X7R | footprint:0805_2012Metric | C23, C37, C87 |
| 3 | 0805,800mA | footprint:0805_2012Metric | FB1, FB2, FB3 |
| 3 | Conn_01x06_Socket | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J2, J5, J6 |
| 3 | LDO 3.3V 200mA XC6206P332MR | footprint:SOT-23-3_L2.9-W1.6-P1.90-LS2.8-BR | LDO1, LDO2, LDO3 |
| 3 | SRV05 | footprint:SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BR | ESD1, ESD2, ESD3 |
| 2 | 0402,1.5pF,50V,C0G | footprint:0402_1005Metric | C48, C51 |
| 2 | 0402,100nF,16V,X7R | footprint:0402_1005Metric | C55, C63 |
| 2 | 0402,10uF,6.3V,X5R | footprint:0402_1005Metric | C39, C44 |
| 2 | 0402,12pF,50V,C0G | footprint:0402_1005Metric | C43, C53 |
| 2 | 0402,1M | footprint:0402_1005Metric | R12, R69 |
| 2 | 0402,47k | footprint:0402_1005Metric | R56, R65 |
| 2 | 10nF | footprint:0402_1005Metric | C6, C74 |
| 2 | 1206,4.7uF,50V,X7R | footprint:1206_3216Metric | C29, C30 |
| 2 | 1uF | footprint:0805_2012Metric | C19, C73 |
| 2 | 47k 3950K | footprint:R0402 | R62, R79 |
| 2 | 8MHz 20pF ±10ppm | footprint:CRYSTAL-SMD_L5.0-W3.2 | U1, U5 |
| 2 | Conn_01x04_Socket | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J3, J7 |
| 2 | MCU 72MHz STM32F103C8T6 | footprint:LQFP-48_L7.0-W7.0-P0.50-LS9.0-BL | U2, U6 |
| 2 | NMOS AO3400A | footprint:SOT-23-3_L2.9-W1.6-P1.90-LS2.8-BR | U8, U9 |
| 2 | SM4007PL | footprint:SOD-123F_L2.8-W1.8-LS3.7-RD | U3, U7 |
| 1 | 0402,510 | footprint:0402_1005Metric | R32 |
| 1 | 0603,10uF,10V,X5R | footprint:0603_1608Metric | C90 |
| 1 | 1206,100uF,6.3V,X5R | footprint:1206_3216Metric | C33 |
| 1 | 1N5819WS | footprint:SOD-323_L1.8-W1.3-LS2.5-RD | D2 |
| 1 | 22uF 35V | footprint:CAP-SMD_BD5.0-L5.3-W5.3-LS6.0-FD | C85 |
| 1 | 3V0 | TestPoint:TestPoint_Loop_D1.80mm_Drill1.0mm_Beaded | TP2 |
| 1 | 40Mhz | footprint:OSC-SMD_4P-L3.2-W2.5-BL | X1 |
| 1 | CR1220 | footprint:BAT-SMD_BS-12-B2AA002 | B1 |
| 1 | ESP32-C3FH4 | ESP32-C3FH4:QFN-32_L5.0-W5.0-P0.50-TL-EP3.7 | U4 |
| 1 | G*** | kibuzzard-669770CC | kibuzzard-23 |
| 1 | G*** | kibuzzard-66976121 | kibuzzard-7 |
| 1 | G*** | kibuzzard-669770DC | kibuzzard-24 |
| 1 | G*** | kibuzzard-669771D1 | kibuzzard-33 |
| 1 | G*** | kibuzzard-6697610A | kibuzzard-5 |
| 1 | G*** | kibuzzard-66972E1B | kibuzzard-13 |
| 1 | G*** | kibuzzard-6697716D | kibuzzard-28 |
| 1 | G*** | kibuzzard-66972E52 | kibuzzard-17 |
| 1 | G*** | kibuzzard-66976119 | kibuzzard-6 |
| 1 | G*** | kibuzzard-66976111 | kibuzzard-4 |
| 1 | G*** | kibuzzard-668C6BA4 | kibuzzard-37 |
| 1 | G*** | kibuzzard-66975F78 | kibuzzard-10 |
| 1 | G*** | kibuzzard-669770AA | kibuzzard-22 |
| 1 | G*** | kibuzzard-668C5808 | kibuzzard-39 |
| 1 | G*** | kibuzzard-6697719B | kibuzzard-26 |
The 439 most common of 479 parts.

CDFER/Business-Cards
Showcasing a collection of functional PCB business cards, each demonstrating a unique embedded electronics project.

CDFER/Business-Cards
Showcasing a collection of functional PCB business cards, each demonstrating a unique embedded electronics project.

CDFER/Business-Cards
Showcasing a collection of functional PCB business cards, each demonstrating a unique embedded electronics project.

CDFER/Business-Cards
Showcasing a collection of functional PCB business cards, each demonstrating a unique embedded electronics project.

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wszeto9/ESP32-S3-HUB75-Driver
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klaus-liebler/sensact
Es gibt vier Namespaces für Nachrichten "REQUEST" und "RESPONSE", "EVENT" und "ACKNOWLEDGE". Dies wird mit den beiden LSB des Versions-Namespace-Bytes erklärt (Somit bleiben 64 Versionierungsmöglichkeiten) Alle vier…

jasonalexander-ja/PicoChain
Power and I2C daisy chained over ethernet patch cables.

spassigl/ATMega32A-demo-board
An ATMega32A breakout board with exposed GPIO pins, LEDs, tactile switches and a buzzer

quintenluyten2/Pocket_2.66_E-reader_PCB
PCB for 2.13" and 2.66" E-ink displays with ESP32-C3, micro-SD card, battery management, and 3 user buttons

It measures 93 × 173 mm and has 2 copper layers, 0.99 mm thick.
479 parts, built around the ESP32-C3FH4, SM4007PL, RB501V-40 and 0402 ±5% 1K6. 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 CDFER/Business-Cards repository on GitHub, at the commit this page was made from: the board is Batch 1/Batch 1.kicad_pcb and its schematic Batch 1/Batch 1.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 CDFER before reusing the design.