ESP32C3
About the ESP32C3 PCB
ESP32C3 is an open source ESP32 PCB design by rajeev2705, published on GitHub. It is a 4-layer board measuring 29.6 × 43.2 mm, with 59 components from 29 distinct parts.
Its main chip is the ESP32-S3FN8, from the ESP32 family. Other key parts include the LM324. By type, the board carries 23 capacitors, 20 resistors, 7 diodes, 2 ICs, 2 connectors and 2 inductors.
From the project
Welcome to my PCB projects repository! This space is dedicated to documenting my journey in designing, creating, and improving printed circuit boards (PCBs). Here, I share various PCB projects, including schematics, layouts, bill of materials (BOM), and relevant documentation.
Main components on the ESP32C3
ESP32C3 bill of materials (BOM)
59 components, 29 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ESP32-S3FN8 | QFN40P700X700X90-57N | U1 |
| 1 | LM324 | SOIC-14_3.9x8.7mm_P1.27mm | U5 |
| 1 | upto 40 Mhz =+-10ppm | Crystal_SMD_3225-4Pin_3.2x2.5mm_HandSoldering | Y1 |
| 1 | Conn_01x04_Socket | PinSocket_1x04_P2.54mm_Vertical | J1 |
| 1 | Conn_01x02_Pin | Molex_Micro-Fit_3.0_43650-0212_1x02-1MP_P3.00mm_Horizontal | J2 |
| 1 | Antenna_Chip | Texas_SWRA117D_2.4GHz_Left | AE1 |
| 1 | SW_SPST | SW_SPST_FSMSM | SW1 |
| 1 | ESD5Zxx | D_SOD-523 | D1 |
| 4 | 1N4148 | D_SMA | D3, D4, D5, D6 |
| 1 | D_Schottky | D_SMA | D7 |
| 1 | LED | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D8 |
| 1 | 600 Ω @ 100 MHz >500mA | L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | L1 |
| 1 | 2.4nH | L_0201_0603Metric_Pad0.64x0.40mm_HandSolder | L2 |
| 2 | 10pf | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C3 |
| 3 | 10uf | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2, C6, C15 |
| 6 | 0.1uf | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C4, C7, C11, C12, C17, C18 |
| 5 | 1uf | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C5, C8, C14, C26, C27 |
| 3 | 100nf | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C9, C23, C25 |
| 1 | 1.2pf | C_0201_0603Metric_Pad0.64x0.40mm_HandSolder | C10 |
| 1 | 1.8pf | C_0201_0603Metric_Pad0.64x0.40mm_HandSolder | C13 |
Show 9 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 4.7uf | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C21, C24 |
| 1 | 15k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 2 | 22R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R3 |
| 11 | 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4, R6, R7, R8, R15, R16, R17, R18 +3 |
| 1 | 499R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5 |
| 2 | 100k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R11, R13 |
| 1 | 6.8k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R12 |
| 1 | 1k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R14 |
| 1 | 0R | L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R26 |
ESP32C3 design files
The KiCad project lives in the rajeev2705/PROJECTS repository on GitHub; these links point at the commit this page was built from.
ESP32C3: common questions
What microcontroller does the ESP32C3 use?
The ESP32C3 is built around the ESP32-S3FN8, from the ESP32 family.
How big is the ESP32C3 PCB?
The ESP32C3 measures 29.6 × 43.2 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the ESP32C3?
59 components, from 29 distinct parts. The full bill of materials is listed on this page.
Where can I download the ESP32C3 design files?
From the rajeev2705/PROJECTS repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the ESP32C3 design in my own project?
The repository has no license, so all rights stay with rajeev2705. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the ESP32C3 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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