Caja-ESP32
About the Caja-ESP32 PCB
Caja-ESP32 is an open source ESP32 PCB design by EmersonEE, published on GitHub. It is a 2-layer board measuring 198 × 83 mm, with 78 components from 30 distinct parts.
Its main chip is the ESP32_DevKit_V1_DOIT, from the ESP32 family. Other key parts include the MP1584, AMS1117-3.3, PC817 and MOC3021M. By type, the board carries 32 resistors, 11 connectors, 10 ICs, 10 capacitors, 9 diodes and 5 transistors.
Main components on the Caja-ESP32
Caja-ESP32 bill of materials (BOM)
78 components, 30 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MP1584 | MP1584_Module | U1 |
| 1 | AMS1117-3.3 | SOT-223-3_TabPin2 | U2 |
| 1 | ~ | LCD ST7920 | U3 |
| 2 | PC817 | DIP-4_W7.62mm | U4, U5 |
| 4 | MOC3021M | MOC3020 | U6, U7, U8, U9 |
| 1 | ESP32_DevKit_V1_DOIT | ESP32_DEVKIT_V1_E32 | U10 |
| 1 | TIP122 | TO-220-3_Vertical | Q1 |
| 4 | BT136-800 | TO-220-3_Vertical | Q2, Q3, Q4, Q5 |
| 1 | JACK_DC | BarrelJack_GCT_DCJ200-10-A_Horizontal | J1 |
| 1 | Fichero | Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | J2 |
| 6 | LOAD | TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J3, J7, J8, J10, J12, J14 |
| 3 | ~ | Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | J4, J5, J6 |
| 1 | DIP_X06 | SW_DIP_SPSTx06_Slide_9.78x17.42mm_W7.62mm_P2.54mm | SW1 |
| 3 | ~ | LED_D5.0mm | D1, D2, D4 |
| 1 | 1N5817 | D_DO-41_SOD81_P10.16mm_Horizontal | D3 |
| 1 | ~ | LED_B5.0mm | D5 |
| 1 | ~ | LED_G5.0mm | D6 |
| 1 | ~ | LED_O5.0mm | D7 |
| 1 | ~ | LED_Y5.0mm | D8 |
| 1 | 1N4007 | D_DO-41_SOD81_P10.16mm_Horizontal | D9 |
Show 10 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 10uF/50V | CP_Radial_D4.0mm_P2.00mm | C1, C2 |
| 4 | 100nF | C_Disc_D3.8mm_W2.6mm_P2.50mm | C3, C4, C5, C6 |
| 4 | C | C_Rect_L10.3mm_W5.0mm_P7.50mm_MKS4 | C7, C8, C9, C10 |
| 9 | 470 | 470 | R1, R2, R3, R4, R5, R6, R9, R12 +1 |
| 2 | 2K | 2K | R7, R32 |
| 7 | 10K | 10K | R8, R11, R14, R15, R16, R30, R31 |
| 5 | 330 | 330 | R10, R20, R21, R24, R25 |
| 1 | 1K | 1K | R13 |
| 4 | 330 1/2W | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R18, R22, R26, R27 |
| 4 | 10 1/2W | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R19, R23, R28, R29 |
Caja-ESP32 design files
The KiCad project lives in the EmersonEE/My_KiCad repository on GitHub; these links point at the commit this page was built from.
Caja-ESP32: common questions
What microcontroller does the Caja-ESP32 use?
The Caja-ESP32 is built around the ESP32_DevKit_V1_DOIT, from the ESP32 family.
How big is the Caja-ESP32 PCB?
The Caja-ESP32 measures 198 × 83 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Caja-ESP32?
78 components, from 30 distinct parts. The full bill of materials is listed on this page.
Where can I download the Caja-ESP32 design files?
From the EmersonEE/My_KiCad repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Caja-ESP32 design in my own project?
The repository has no license, so all rights stay with EmersonEE. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Caja-ESP32 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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