Ray2
About the Ray2 PCB
Ray2 is an open source ESP32 PCB design by ohaut, published on GitHub. It is a 2-layer board measuring 18.5 × 33.3 mm, with 37 components from 22 distinct parts.
Its main chip is the ESP32-C3, from the ESP32 family. Other key parts include the AP2210N-3.3TRG1. By type, the board carries 10 capacitors, 8 connectors, 4 resistors, 3 transistors, 2 ICs and 2 inductors.
It belongs with the iot & wireless designs in this gallery.
From the project
Ray is a WiFi 3 channel led controller
This directory contains the hardware designs for the ray component. All the designs are made using KiCad which is free and opensource software, you can download it here: www.kicad.org
* ray2: Is the latest version of the design, based on the RISC-V esp32c3 chip from espressif, with embedded 4MB flash.
* microdimmer: Is a small footprint version, based on ESP8266, using SMD components and a DC/DC regulator.
Main components on the Ray2
Ray2 bill of materials (BOM)
37 components, 22 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ESP32-C3 | QFN-32-1EP_5x5mm_P0.5mm_EP3.45x3.45mm | U1 |
| 1 | AP2210N-3.3TRG1 | SOT-23 | U3 |
| 3 | TSM2314 or IRLML6344TRPbF | SOT-23 | Q1, Q2, Q3 |
| 1 | 40MHZ 40Mhz | Crystal_SMD_2520-4Pin_2.5x2.0mm | Y1 |
| 1 | Conn_Coaxial | coaxial_u.fl-r-smt-1 | J1 |
| 3 | PAD | SolderWire-0.5sqmm_1x01_D0.9mm_OD2.1mm | P1, P2, P3 |
| 1 | RGB_OUT | SolderWire-0.5sqmm_1x01_D0.9mm_OD2.1mm | P4 |
| 2 | PAD | SolderWirePad_1x01_SMD_1x2mm | P5, P6 |
| 1 | PUSH | SolderWire-0.5sqmm_1x01_D0.9mm_OD2.1mm | P7 |
| 1 | Antenna | Texas_SWRA117D_2.4GHz_Left | AE1 |
| 2 | WIRE | SolderWire-1.5sqmm_1x01_D1.7mm_OD3.9mm | GND1, VIN1 |
| 3 | PAD | SolderWire-0.5sqmm_1x01_D0.9mm_OD2.1mm | N1, N2, N3 |
| 1 | CONN_01X04 | PinHeader_1x05_P1.27mm_Vertical | PG1 |
| 2 | TBD | L_0402_1005Metric | L1, L2 |
| 2 | TBD | C_0402_1005Metric | C1, C2 |
| 1 | 100NF 100nF | C_0402_1005Metric | C3 |
| 4 | 1UF 1uF | C_0402_1005Metric | C4, C6, C7, C9 |
| 3 | 10UF 10uF | C_0603_1608Metric | C5, C8, C10 |
| 1 | 100K 100k | R_0402_1005Metric | R1 |
| 1 | 10K 10k | R_0402_1005Metric | R2 |
Show 2 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 4K7 4k7 | R_0402_1005Metric | R3 |
| 1 | 100 | R_0402_1005Metric | R4 |
Ray2 design files
The KiCad project lives in the ohaut/ray repository on GitHub; these links point at the commit this page was built from.
Ray2: common questions
What microcontroller does the Ray2 use?
The Ray2 is built around the ESP32-C3, from the ESP32 family.
How big is the Ray2 PCB?
The Ray2 measures 18.5 × 33.3 mm, has 2 copper layers and is 1.04 mm thick.
How many components are on the Ray2?
37 components, from 22 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 Ray2 design files?
From the ohaut/ray 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 Ray2 design in my own project?
The repository has no license, so all rights stay with ohaut. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Ray2 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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