ESP32 Trainer
EmersonEE·ESP32_Trainer·Development_Board_ESP32-V1.0/Development_Board_ESP32-V1.0.kicad_pcb
About the ESP32 Trainer PCB
ESP32 Trainer is an open source ESP32 PCB design by EmersonEE, published on GitHub. It is a 2-layer board measuring 100 × 100 mm, with 91 components from 36 distinct parts.
Its main chip is the ESP32-WROOM-32, from the ESP32 family. Other key parts include the CH340G, AMS1117-3.3 and PC817. By type, the board carries 26 resistors, 16 diodes, 16 capacitors, 10 connectors, 6 ICs and 6 transistors.
It belongs with the dev boards & breakouts designs in this gallery.
From the project
- 🔹 Introducción - 🔹 ESP32 Trainer - 🔹 ESP32 Trainer Pinout - 🔹 Materiales - 🔹 Diseño PCB - KiCad - 🔹 Proyectos Demostrativos
- 🔹 Introducción - 🔹 ESP32 Trainer - 🔹 ESP32 Trainer Pinout - 🔹 Materiales - 🔹 Diseño PCB - KiCad - 🔹 Proyectos Demostrativos
En el ámbito del diseño electrónico y el desarrollo de prototipos, existe una necesidad creciente de contar con herramientas integradas que simplifiquen el proceso de aprendizaje, experimentación y construcción de soluciones funcionales. Las placas de desarrollo convencionales suelen requerir múltiples módulos adicionales para realizar proyectos completos, lo que incrementa la complejidad, los costos y el tiempo de implementación.

Main components on the ESP32 Trainer
ESP32 Trainer bill of materials (BOM)
91 components, 36 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ESP32-WROOM-32 | ESP32-WROOM-32 | U1 |
| 1 | CH340G | SOIC-16_3.9x9.9mm_P1.27mm | U2 |
| 1 | AMS1117-3.3 | SOT-223-3_TabPin2 | U3 |
| 3 | PC817 | DIP-4_W7.62mm | U4, U5, U6 |
| 6 | MMBT3904 | SOT-23 | Q1, Q2, Q3, Q4, Q5, Q6 |
| 1 | 12MHZ 12MHz | Crystal_HC49-4H_Vertical | Y1 |
| 1 | USB_B | USB_B_Lumberg_2411_02_Horizontal | J1 |
| 1 | GPIO | PinHeader_2x04_P2.54mm_Vertical | J2 |
| 1 | OLED | PinSocket_1x04_P2.54mm_Vertical | J3 |
| 1 | ~ | PinHeader_1x04_P2.54mm_Vertical | J4 |
| 1 | ~ | PinHeader_2x03_P2.54mm_Vertical | J5 |
| 3 | ~ | TerminalBlock_Phoenix_MKDS-1,5-3-5.08_1x03_P5.08mm_Horizontal | J6, J7, J8 |
| 2 | ~ | PinHeader_1x03_P2.54mm_Vertical | J9, J10 |
| 1 | Buzzer | Buzzer_12x9.5RM7.6 | BZ1 |
| 3 | ~ | Relay_SPDT_SANYOU_SRD_Series_Form_C | K1, K2, K3 |
| 2 | 100K | Potentiometer_Bourns_3296W_Vertical | RV1, RV2 |
| 2 | ~ | SW_Tactile_SPST_NO_Straight_CK_PTS636Sx25SMTRLFS | SW1, SW2 |
| 2 | ~ | SW_PUSH_6mm | SW3, SW4 |
| 3 | GREEN | LED_1210_3225Metric_Pad1.42x2.65mm_HandSolder | D1, D7, D10 |
| 1 | YELLOW | LED_1210_3225Metric_Pad1.42x2.65mm_HandSolder | D2 |
Show 16 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | BLUE | LED_1210_3225Metric_Pad1.42x2.65mm_HandSolder | D3, D8, D12 |
| 3 | RED | LED_1210_3225Metric_Pad1.42x2.65mm_HandSolder | D4, D5, D6 |
| 3 | SS24 | D_SMA | D9, D11, D13 |
| 3 | WS2812B | LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D14, D15, D16 |
| 2 | 22PF 22pF | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C1, C2 |
| 7 | 0.1UF 0.1uF | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C3, C4, C7, C8, C14, C15, C16 |
| 5 | 100NF 100nF | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C5, C6, C9, C11, C13 |
| 2 | 100UF 100uF | CP_Elec_5x5.4 | C10, C12 |
| 6 | 10K | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1, R2, R7, R9, R11, R12 |
| 2 | 2K | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R3, R4 |
| 1 | 470 | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R5 |
| 1 | 1K | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R6 |
| 10 | 470 | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R8, R10, R13, R14, R15, R16, R19, R20 +2 |
| 4 | 2.2K | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R17, R22, R23, R25 |
| 1 | 4.7K | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R18 |
| 1 | 220 | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R26 |
ESP32 Trainer design files
The KiCad project lives in the EmersonEE/ESP32_Trainer repository on GitHub; these links point at the commit this page was built from.
ESP32 Trainer: common questions
What microcontroller does the ESP32 Trainer use?
The ESP32 Trainer is built around the ESP32-WROOM-32, from the ESP32 family.
How big is the ESP32 Trainer PCB?
The ESP32 Trainer measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the ESP32 Trainer?
91 components, from 36 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 ESP32 Trainer design files?
From the EmersonEE/ESP32_Trainer 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 ESP32 Trainer 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 ESP32 Trainer 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.
Similar boards
ESP32
Open Book Abridged Edition
joeycastillo
85 × 115 mm65 parts2LCC-BY-SA-4.08.1kESP32
Badge
atopile
56.3 × 39 mm239 parts4LMIT4.0kESP32
Esp32 minimal
atopile
36.2 × 26.8 mm20 parts2LMIT4.0kESP32
Racer
StuckAtPrototype
36 × 50.2 mm70 parts4LApache-2.03.8kESP32
Controller
StuckAtPrototype
29 × 74 mm58 parts4LApache-2.03.8kESP32
Bitaxe
skot
56.5 × 99.8 mm86 parts4LCERN-OHL-S-2.01.4k