ESP32S2 Breakout
gregdavill·advent-calendar-of-circuits-2020·esp32s2-breakout/kicad-src/esp32s2-breakout.kicad_pcb
About the ESP32S2 Breakout
ESP32S2 Breakout is an open source ESP32 PCB design by gregdavill, published on GitHub. It is a 4-layer board measuring 70.3 × 42.8 mm, with 64 components from 36 distinct parts.
Its main chip is the ESP32-S2, from the ESP32 family. Other key parts include the USBLC6-2P6, TLV62569DRLR, W25Q32JVZPIQ, RV-8803-C7 and BQ24072RGT. By type, the board carries 25 capacitors, 17 resistors, 7 ICs, 6 inductors, 3 connectors and 3 switches.
It belongs with the dev boards & breakouts designs in this gallery.
From the project
1 circuit board design a day for 31 days.
ESP32S2 + Sharp memory LCD + prototyping area

Main components on the ESP32S2 Breakout
ESP32S2 Breakout bill of materials (BOM)
64 components, 36 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | USBLC6-2P6 USBLC6-2 | SOT-666 | U1 |
| 1 | TLV62569DRLR TLV62569DRL | SOT-666 | U2 |
| 1 | ESP32-S2 | QFN-56-1EP_7x7mm_P0.4mm_EP5.6x5.6mm | U3 |
| 1 | W25Q32JVZPIQ | WSON-8-1EP_6x5mm_P1.27mm_EP3.4x4mm | U4 |
| 1 | RV-8803-C7 | RTC_SMD_MicroCrystal_C3_2.5x3.7mm | U5 |
| 1 | BQ24072RGT | VQFN-16-1EP_3x3mm_P0.5mm_EP1.6x1.6mm | U6 |
| 1 | TPS63900 | WSON-10-1EP_2.5x2.5mm_P0.5mm_EP1.2x2mm_ThermalVias | U7 |
| 1 | SX20Y040000BC1T 40MHz | Crystal_SMD_4Pin_2.0x1.6mm | Y1 |
| 1 | USB4105-GF-A USB_C | USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
| 1 | Conn_01x10_MountingPin | Hirose_FH33-10S-0.5SH_1x10-1MP_P0.50mm_Horizontal | J2 |
| 1 | S2B-PH-SM4-TB(LF)(SN) JST | BM02B-GHS-TBT | J4 |
| 1 | SLDA31-2R400G-S2TF Antenna | Ant_3216 | AE1 |
| 3 | SW_Push | SW_SPST_PTS810 | SW1, SW2, SW3 |
| 1 | D_ALT | D_SOD-523 | D1 |
| 3 | BLM15BC241SN1D 240R | L_0402_1005Metric | FB1, FB2, FB3 |
| 2 | SLM20122R2MIT 2.2uH | L_0805_2012Metric | L1, L3 |
| 1 | TBD | L_0402_1005Metric | L2 |
| 4 | CC0402KRX5R6BB475 4.7uF | C_0402_1005Metric | C1, C21, C22, C25 |
| 5 | CC0402MRX5R5BB225 2.2uF | C_0402_1005Metric | C2, C7, C17, C18, C23 |
| 2 | CC0402GRNPO9BN180 18pF | C_0402_1005Metric | C3, C4 |
Show 16 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | CC0402CRNPO9BN6R8 6.8pF | C_0402_1005Metric | C5 |
| 1 | CC0402KRX5R6BB105 1uF | C_0402_1005Metric | C6 |
| 3 | CC0603KRX5R5BB106 10u | C_0603_1608Metric | C8, C14, C19 |
| 5 | CC0402ZRY5V7BB104 100n | C_0402_1005Metric | C9, C12, C13, C15, C20 |
| 2 | TBD | C_0402_1005Metric | C10, C11 |
| 1 | DCK-3R3E224U-E CP1 | BatteryHolder_Seiko_MS621F | C16 |
| 1 | CC0402KRX5R6BB105 22uF | C_0603_1608Metric | C24 |
| 1 | RC0402FR-071ML 1M | R_0402_1005Metric | R1 |
| 2 | RC0402FR-075K1L 5k1 | R_0402_1005Metric | R2, R3 |
| 2 | RC0402FR-0722RL 22R | R_0402_1005Metric | R4, R5 |
| 1 | RC0402FR-07210KL 210k | R_0402_1005Metric | R6 |
| 1 | RC0402FR-0747KL 47k | R_0402_1005Metric | R7 |
| 6 | RC0402FR-0710KL 10k | R_0402_1005Metric | R10, R12, R13, R14, R15, R16 |
| 2 | 100R | R_0402_1005Metric | R11, R17 |
| 1 | RC0402FR-07210KL 36.5k | R_0402_1005Metric | R18 |
| 1 | RC0402FR-07210KL 16.2k | R_0402_1005Metric | R19 |
ESP32S2 Breakout design files
The KiCad project lives in the gregdavill/advent-calendar-of-circuits-2020 repository on GitHub; these links point at the commit this page was built from.
ESP32S2 Breakout: common questions
What microcontroller does the ESP32S2 Breakout use?
The ESP32S2 Breakout is built around the ESP32-S2, from the ESP32 family.
How big is the ESP32S2 Breakout?
The ESP32S2 Breakout measures 70.3 × 42.8 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the ESP32S2 Breakout?
64 components, from 36 distinct parts. The full bill of materials is listed on this page.
Where can I download the ESP32S2 Breakout design files?
From the gregdavill/advent-calendar-of-circuits-2020 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the ESP32S2 Breakout design in my own project?
The repository has no license, so all rights stay with gregdavill. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the ESP32S2 Breakout 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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