Obsidian Boa
About the Obsidian Boa PCB
Obsidian Boa is an open source ESP32 PCB design by silvioviscuso, published on GitHub. It is a 4-layer board measuring 35.6 × 17.8 mm, with 62 components from 47 distinct parts.
Its main chip is the ESP32-D0WDQ6, from the ESP32 family. Other key parts include the LY68L6400SLIT, W25Q128JVSIQ TR, TPS62290DRVR and CP2102N-A02-GQFN28R. By type, the board carries 19 capacitors, 16 connectors, 13 resistors, 5 ICs, 2 transistors and 2 switches.
It belongs with the iot & wireless, robotics & motion and wearables designs in this gallery.
From the project
"ESP32-REACTJS-DEVKIT: compact, powerful, ideal for small robot, IoT and wareable."
Thank you for choosing ESP32-REACTJS-DEVKIT! 🚀
Main components on the Obsidian Boa
Obsidian Boa bill of materials (BOM)
62 components, 47 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LY68L6400SLIT | SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | ESP32-D0WDQ6 | QFN40P600X600X90-49N-D | U3 |
| 1 | W25Q128JVSIQ TR W25Q128JV | SOIC-8_5.23x5.23mm_P1.27mm | U4 |
| 1 | TPS62290DRVR TPS62290 | WSON-6-1EP_2x2mm_P0.65mm_EP1x1.6mm_ThermalVias | U5 |
| 1 | CP2102N-A02-GQFN28R CP2102N-Axx-xQFN28 | QFN-28-1EP_5x5mm_P0.5mm_EP3.35x3.35mm | U7 |
| 2 | SS8050-G | SOT95P240X115-3N | Q1, Q2 |
| 1 | ECS-400-10-36B-CKY-TR 40MHz | Crystal_SMD_Abracon_ABM10-4Pin_2.5x2.0mm | Y1 |
| 1 | USB4105-GF-A USB_C | USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
| 1 | 7 | Pin_Header_Straight_Round_1x01_Castellated | P7 |
| 1 | 8 | Pin_Header_Straight_Round_1x01_Castellated | P8 |
| 1 | 9 | Pin_Header_Straight_Round_1x01_Castellated | P9 |
| 1 | 10 | Pin_Header_Straight_Round_1x01_Castellated | P10 |
| 1 | 11 | Pin_Header_Straight_Round_1x01_Castellated | P11 |
| 1 | 12 | Pin_Header_Straight_Round_1x01_Castellated | P12 |
| 1 | 13 | Pin_Header_Straight_Round_1x01_Castellated | P13 |
| 1 | 14 | Pin_Header_Straight_Round_1x01_Castellated | P14 |
| 1 | 16 | Pin_Header_Straight_Round_1x01_Castellated | P16 |
| 1 | 17 | Pin_Header_Straight_Round_1x01_Castellated | P17 |
| 1 | 18 | Pin_Header_Straight_Round_1x01_Castellated | P18 |
| 1 | GND | Pin_Header_Straight_Round_1x01_Castellated | P25 |
Show 27 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 3V3 | Pin_Header_Straight_Round_1x01_Castellated | P28 |
| 1 | CDONE | Pin_Header_Straight_Round_1x01_Castellated | P30 |
| 1 | CRESET | Pin_Header_Straight_Round_1x01_Castellated | P31 |
| 1 | 0479480001 Antenna | 0479480001 | AE1 |
| 2 | EVP-BB2A9B000 TACT | EVPBB2A9B000 | SW1, SW2 |
| 1 | LTST-C191TBKT BLU | LED_0603_1608Metric_Compact | D3 |
| 1 | CWCI0805F-100KT 2.2uH | L_0805_2012Metric | L1 |
| 1 | SDCL1005C2N7STDF 2.7nH | L_0402_1005Metric | L2 |
| 3 | CC0402MRX5R5BB225 2.2uF | C_0402_1005Metric | C1, C2, C7 |
| 2 | CC0402GRNPO9BN180 18pF | C_0402_1005Metric | C3, C4 |
| 3 | CC0603KRX5R5BB106 10u | C_0603_1608Metric | C5, C14, C19 |
| 1 | CC0402KRNPO9BN220 22pF | C_0402_1005Metric | C6 |
| 4 | CC0402ZRY5V7BB104 100n | C_0402_1005Metric | C9, C12, C13, C15 |
| 2 | CQ0402CRNPO9BN1R0 1pF | C_0402_1005Metric | C10, C11 |
| 1 | GRM033R70J332KA01D 3.3nF | C_0201_0603Metric | C16 |
| 1 | KGM05AR70J103KH 10nF | C_0402_1005Metric | C17 |
| 1 | CL05B104KP5NNNC 0.1uF | C_0402_1005Metric | C18 |
| 1 | CL05A475MP5NRNC 4.7uF | C_0402_1005Metric | C20 |
| 5 | RC0402FR-0710KL 10k | R_0402_1005Metric | R1, R10, R20, R21, R22 |
| 1 | RC0402FR-07453KL 453k | R_0402_1005Metric | R7 |
| 1 | RC0402FR-07100KL 100k | R_0402_1005Metric | R8 |
| 1 | RC0402FR-072K2L 2k2 | R_0402_1005Metric | R13 |
| 1 | RC0402FR-0720KL 20K | R_0402_1005Metric | R15 |
| 1 | CRCW040222K1FKEDC 22.1K | R_0402_1005Metric | R16 |
| 1 | RC0402FR-0747K5L 47.5K | R_0402_1005Metric | R17 |
| 1 | ERJ-2RKF2001X 2K | R_0402_1005Metric | R18 |
| 1 | EXB-28V103JX 10k | R_Array_Convex_4x0402 | RN1 |
Obsidian Boa design files
The KiCad project lives in the silvioviscuso/ESP32-REACTJS-DEVKIT repository on GitHub; these links point at the commit this page was built from.
Obsidian Boa: common questions
What microcontroller does the Obsidian Boa use?
The Obsidian Boa is built around the ESP32-D0WDQ6, from the ESP32 family.
How big is the Obsidian Boa PCB?
The Obsidian Boa measures 35.6 × 17.8 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Obsidian Boa?
62 components, from 47 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Obsidian Boa design files?
From the silvioviscuso/ESP32-REACTJS-DEVKIT repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Obsidian Boa design in my own project?
The repository has no license, so all rights stay with silvioviscuso. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Obsidian Boa 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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