Placas
About the Placas PCB
Placas is an open source ESP32 PCB design by lhc, published on GitHub. It is a 2-layer board measuring 60 × 41.5 mm, with 24 components from 19 distinct parts.
Its main chip is the ESP32-S3-WROOM-1-N16R2, from the ESP32 family. Other key parts include the TLV1117LV33DCYR. By type, the board carries 7 resistors, 5 connectors, 4 capacitors, 2 ICs, 2 switches and 1 transistor.
From the project
Open Hardware respository from Laboratório Hacker de Campinas
Repositório do evento "Construindo sua placa em KICAD"
Página do Evento: https://eventos.lhc.net.br/event/live-construindo-sua-placa-em-kicad
Link da Live: https://www.youtube.com/watch?v=B9zf6GB_SSQ
Main components on the Placas
Placas bill of materials (BOM)
24 components, 19 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ESP32-S3-WROOM-1-N16R2 AMS1117 Espressif | SOT-223-3_TabPin2 | U1 |
| 1 | TLV1117LV33DCYR ESP-12F Texas Instruments | ESP-12E | U2 |
| 1 | BC547 | TO-92_Inline | Q1 |
| 1 | 62000511121 USB_B_Micro Wurth Elektronik | USB_Micro-B_GCT_USB3076-30-A | J1 |
| 1 | DHT | PinSocket_1x04_P2.54mm_Vertical | J2 |
| 1 | RL | TerminalBlock_bornier-3_P5.08mm | J3 |
| 1 | PGM | PinHeader_1x06_P2.54mm_Vertical | J4 |
| 1 | IO | PinHeader_1x07_P2.54mm_Vertical | J5 |
| 1 | JMP | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 1 | RL1 | Relay_SPDT_SANYOU_SRD_Series_Form_C | K1 |
| 2 | BTN1 | SW_PUSH_6mm | SW1, SW2 |
| 1 | D | D_SMA-SMB_Universal_Handsoldering | D1 |
| 1 | ZRB18AR61A106ME01L 100uF Murata | CP_Radial_D5.0mm_P2.50mm | C1 |
| 1 | 06033C104KAT2A 100uF AVX | CP_Radial_D5.0mm_P2.50mm | C2 |
| 2 | 100NF 10uF KEMET, TDK | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C4 |
| 1 | RC0603FR-07470RL 10k Yageo | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 3 | CRCW040210K0FKEDC 10k Vishay | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R5, R6 |
| 2 | CRCW04020000Z0EDC 10k Vishay | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3, R4 |
| 1 | CRCW040210K0FKEDC 2k Vishay | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R7 |
Placas design files
The KiCad project lives in the lhc/Hardware repository on GitHub; these links point at the commit this page was built from.
Placas: common questions
What microcontroller does the Placas use?
The Placas is built around the ESP32-S3-WROOM-1-N16R2, from the ESP32 family.
How big is the Placas PCB?
The Placas measures 60 × 41.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Placas?
24 components, from 19 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 Placas design files?
From the lhc/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 Placas design in my own project?
The repository has no license, so all rights stay with lhc. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Placas 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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