Batch 1
About the Batch 1 PCB
Batch 1 is an open source ESP32 PCB design by CDFER, published on GitHub under the Custom license license. It is a 2-layer board measuring 93 × 173 mm, with 384 components from 63 distinct parts.
Its main chip is the ESP32-C3FH4, from the ESP32 family. Other key parts include the 8MHz 20pF ±10ppm, MCU 72MHz STM32F103C8T6, SM4007PL and NMOS AO3400A. By type, the board carries 99 resistors, 97 LEDs, 90 capacitors, 37 diodes, 18 switches and 12 connectors.
It belongs with the sensors and keyboards designs in this gallery.
From the project
Showcasing a collection of functional PCB business cards, each demonstrating a unique embedded electronics project.
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.
Simple, battery-powered USB 2.0 and 3.0 cable tester Protected by Schottky diodes and a polyfuse * Indicates test results with LEDs
Temperature-controlled hotplate for perfect tea temperature Compact design, precise temperature control, and user-friendly interface
Main components on the Batch 1
Batch 1 bill of materials (BOM)
384 components, 63 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 8MHz 20pF ±10ppm | CRYSTAL-SMD_L5.0-W3.2 | U1, U5 |
| 2 | MCU 72MHz STM32F103C8T6 | LQFP-48_L7.0-W7.0-P0.50-LS9.0-BL | U2, U6 |
| 2 | SM4007PL | SOD-123F_L2.8-W1.8-LS3.7-RD | U3, U7 |
| 1 | ESP32-C3FH4 | QFN-32_L5.0-W5.0-P0.50-TL-EP3.7 | U4 |
| 2 | NMOS AO3400A | SOT-23-3_L2.9-W1.6-P1.90-LS2.8-BR | U8, U9 |
| 5 | USB_C_Receptacle | TYPE-C-SMD_C9900025773 | J1, J4, J8, J11, J12 |
| 3 | Conn_01x06_Socket | PinHeader_1x06_P2.54mm_Vertical | J2, J5, J6 |
| 2 | Conn_01x04_Socket | PinHeader_1x04_P2.54mm_Vertical | J3, J7 |
| 1 | USB3_A | USB-A-SMD_HC-USB3.0-C225-P | J9 |
| 1 | USB_B_Micro | USB_Micro-B_XKB_U254-051T-4BH83-F1S | J10 |
| 1 | CR1220 | BAT-SMD_BS-12-B2AA002 | B1 |
| 3 | SRV05 | SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BR | ESD1, ESD2, ESD3 |
| 5 | 1.5A Resettable Fuse | Fuse_1206_3216Metric | F1, F2, F3, F4, F5 |
| 1 | Heater | heater_coil | HC1 |
| 2 | Jumper_2_Open | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP3, JP4 |
| 3 | LDO 3.3V 200mA XC6206P332MR | SOT-23-3_L2.9-W1.6-P1.90-LS2.8-BR | LDO1, LDO2, LDO3 |
| 18 | Button SPST 50mA 12V | SW-SMD_4P-L5.1-W5.1-P3.70-LS6.5-TL-2 | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +10 |
| 8 | 0603,Yellow | LED0603 | LED1, LED2, LED3, LED8, LED9, LED16, LED17, LED19 |
| 14 | 0603,Red | LED0603 | LED4, LED5, LED6, LED7, LED10, LED11, LED12, LED13 +6 |
| 75 | XL-1615RGBC-WS2812B | LED-SMD_4P-L1.6-W1.5_XL-1615RGBC-WS2812B | RGB1, RGB2, RGB3, RGB4, RGB5, RGB6, RGB7, RGB8 +67 |
Show 43 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Zenner 3.3V <2uA ZMM3V3 | LL-34_L3.5-W1.5-RD | D1 |
| 1 | 1N5819WS | SOD-323_L1.8-W1.3-LS2.5-RD | D2 |
| 1 | ZMM5V6 | LL-34_L3.5-W1.5-RD | D3 |
| 17 | LED | LED_0603_1608Metric | D4, D5, D6, D7, D8, D9, D10, D11 +9 |
| 17 | RB501V-40 | D_SOD-323 | D15, D16, D17, D18, D19, D20, D21, D22 +9 |
| 3 | 0805,800mA | 0805_2012Metric | FB1, FB2, FB3 |
| 4 | 0402,3.9nH,300mA | 0402_1005Metric | L1, L2, L3, L4 |
| 8 | CL05C331JB5NNNC 330pF | 0402_1005Metric | C1, C8, C9, C18, C66, C67, C71, C80 |
| 20 | CL05B104KO5NNNC 100nF | 0402_1005Metric | C2, C4, C14, C16, C35, C56, C57, C60 +12 |
| 17 | CL05A105KA5NQNC 0402,1uF,25V,X5R | 0402_1005Metric | C3, C5, C7, C10, C12, C15, C26, C27 +9 |
| 2 | CL05B103KB5NNNC 10nF | 0402_1005Metric | C6, C74 |
| 5 | CL05A475MP5NRNC 0402,4.7uF,10V,X5R | 0402_1005Metric | C11, C21, C41, C79, C89 |
| 4 | 0402CG200J500NT 0402,20pF,50V,C0G | 0402_1005Metric | C13, C17, C54, C58 |
| 2 | CL21B105KBFNNNE 1uF | 0805_2012Metric | C19, C73 |
| 3 | CL05C331JB5NNNC 0402,330pF,50V,C0G | 0402_1005Metric | C20, C31, C88 |
| 5 | CL10B474KA8NNNC 0603,470nF,25V,X7R | 0603_1608Metric | C22, C25, C32, C82, C84 |
| 3 | CL21B105KBFNNNE 0805,1uF,50V,X7R | 0805_2012Metric | C23, C37, C87 |
| 3 | CL10C331JB8NNNC 0603,330pF,50V,C0G | 0603_1608Metric | C24, C36, C83 |
| 2 | 1206B475K500NT 1206,4.7uF,50V,X7R | 1206_3216Metric | C29, C30 |
| 1 | CL31A107MQHNNNE 1206,100uF,6.3V,X5R | 1206_3216Metric | C33 |
| 5 | CL05B104KB54PNC 0402,100nF,50V,X7R | 0402_1005Metric | C38, C40, C45, C49, C50 |
| 2 | CL05A106MQ5NUNC 0402,10uF,6.3V,X5R | 0402_1005Metric | C39, C44 |
| 2 | 0402CG120J500NT 0402,12pF,50V,C0G | 0402_1005Metric | C43, C53 |
| 2 | 0402CG1R5C500NT 0402,1.5pF,50V,C0G | 0402_1005Metric | C48, C51 |
| 2 | CL05B104KO5NNNC 0402,100nF,16V,X7R | 0402_1005Metric | C55, C63 |
| 1 | 22uF 35V | CAP-SMD_BD5.0-L5.3-W5.3-LS6.0-FD | C85 |
| 1 | CL10A106KP8NNNC 0603,10uF,10V,X5R | 0603_1608Metric | C90 |
| 4 | 0402WGF220JTCE 0402,22 | 0402_1005Metric | R1, R11, R73, R74 |
| 20 | 0402WGF1002TCE 0402,10k | 0402_1005Metric | R2, R4, R5, R7, R8, R10, R20, R22 +12 |
| 4 | 0402WGF4701TCE 0402,4.7k | 0402_1005Metric | R3, R63, R66, R68 |
| 6 | 0402WGF5101TCE 0402,5.1k | 0402_1005Metric | R6, R16, R38, R43, R70, R75 |
| 19 | 0402WGF1500TCE 0402,150 | 0402_1005Metric | R9, R71, R82, R83, R84, R85, R86, R87 +11 |
| 2 | 0402WGF1004TCE 0402,1M | 0402_1005Metric | R12, R69 |
| 10 | 0402WGF1201TCE 0402,1.2k | 0402_1005Metric | R13, R14, R23, R27, R29, R33, R59, R60 +2 |
| 4 | 0402WGF3300TCE 0402,330 | 0402_1005Metric | R15, R42, R80, R99 |
| 6 | 0402WGF6800TCE 0402,680 | 0402_1005Metric | R17, R18, R30, R35, R58, R61 |
| 6 | 0402WGF1003TCE 0402,100k | 0402_1005Metric | R19, R26, R46, R55, R76, R78 |
| 6 | 0402WGF1001TCE 0402,1k | 0402_1005Metric | R21, R24, R47, R52, R53, R64 |
| 4 | 0402WGF1000TCE 0402,100 | 0402_1005Metric | R28, R31, R50, R54 |
| 1 | 0402WGF5100TCE 0402,510 | 0402_1005Metric | R32 |
| 3 | 0402WGF0000TCE 0402,0,1A | 0402_1005Metric | R36, R39, R40 |
| 2 | 0402WGF4702TCE 0402,47k | 0402_1005Metric | R56, R65 |
| 2 | 47k 3950K | R0402 | R62, R79 |
Batch 1 design files
The KiCad project lives in the CDFER/Business-Cards repository on GitHub; these links point at the commit this page was built from.
- LayoutBatch 1/Batch 1.kicad_pcb
- SchematicBatch 1/Batch 1.kicad_sch
Batch 1: common questions
What microcontroller does the Batch 1 use?
The Batch 1 is built around the ESP32-C3FH4, from the ESP32 family.
How big is the Batch 1 PCB?
The Batch 1 measures 93 × 173 mm, has 2 copper layers and is 0.99 mm thick.
How many components are on the Batch 1?
384 components, from 63 distinct parts. The full bill of materials is listed on this page.
Where can I download the Batch 1 design files?
From the CDFER/Business-Cards repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Batch 1 design in my own project?
It is published under Custom license, which limits how it may be reused; read the license before building on it.
Can I test firmware for the Batch 1 without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.
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