Core v2
About the Core v2 PCB
Core v2 is an open source ESP32 PCB design by OpenShock, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 40 × 56 mm, with 38 components from 21 distinct parts.
Its main chip is the ESP32-S3-WROOM-1, from the ESP32 family. Other key parts include the DL-TX1-433M, H34B-433M and AP2114HA-3.3. By type, the board carries 13 capacitors, 9 resistors, 4 ICs, 4 diodes, 3 switches and 2 connectors.
From the project
KiCAD files for PCBs for transmitters and other hardware for OpenShock.
JLCPCB may contact you about a couple of things:
- WS2812B-Minis may incur an extra component baking fee (~$8-10) - Rotations of WS2812B-Mini and Antenna. Ensure that they match these examples:
Main components on the Core v2
Core v2 bill of materials (BOM)
38 components, 21 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | DL-TX1-433M | WIELM-TH_DL-TX1-433M | U1 |
| 1 | H34B-433M | WIRELM-TH_H34S-433M | U2 |
| 1 | ESP32-S3-WROOM-1 | ESP32-S3-WROOM-1 | U3 |
| 1 | AP2114HA-3.3 | SOT-223-3_TabPin2 | U5 |
| 1 | BSS138 | SOT-23 | Q1 |
| 1 | PJ-3200 | AUDIO-TH_PJ-3200 | CN1 |
| 1 | USB_C_RECEPTACLE_USB2.0 USB_C_Receptacle_USB2.0 | HRO-TYPE-C-31-M-12-HandSoldering_ABPads | J2 |
| 1 | C89805 Antenna | Pin_D1.0mm_L10.0mm | AE1 |
| 1 | C883133 Polyfuse | Fuse_1206_3216Metric_Pad1.42x1.75mm_HandSolder | F1 |
| 3 | C445493 SW_SPST | SW_PUSH_6mm_customized | SW1, SW2, SW3 |
| 1 | C8598 D_Schottky | D_SOD-123 | D1 |
| 1 | C2286 POWER | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D2 |
| 1 | C72038 STATUS | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D3 |
| 1 | WS2812B-MINI3535 WS2812B-Mini3535 | LED_WS2812B-Mini_3.5x3.5mm_P1.75mm | D4 |
| 6 | 100NF 100nF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C4, C8, C10, C11, C13 |
| 3 | 10UF 10uF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2, C6, C9 |
| 3 | 22UF 22uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C5, C7 |
| 1 | 73PF 73pF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C12 |
| 3 | 10K 10k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R3, R5 |
| 5 | 5.1K 5.1k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4, R6, R7, R8, R9 |
Show 1 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 100K 100k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R10 |
Core v2 design files
The KiCad project lives in the OpenShock/Hardware repository on GitHub; these links point at the commit this page was built from.
Core v2: common questions
What microcontroller does the Core v2 use?
The Core v2 is built around the ESP32-S3-WROOM-1, from the ESP32 family.
How big is the Core v2 PCB?
The Core v2 measures 40 × 56 mm, has 2 copper layers and is 0.9912 mm thick.
How many components are on the Core v2?
38 components, from 21 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 Core v2 design files?
From the OpenShock/Hardware 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 Core v2 design in my own project?
Yes, under the terms of its CERN-OHL-S-2.0 license, which OpenShock chose for the repository.
Can I test firmware for the Core v2 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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