Hat board
About the Hat board
Hat board is an open source ESP32 PCB design by Phil-CIA, published on GitHub. It is a 2-layer board measuring 73.2 × 99.9 mm, with 79 components from 26 distinct parts.
Its main chip is the ).96 inOLED display SSD1306, from the ESP32 family. Other key parts include the W25Q128, MAX98357A and 74HC595D. By type, the board carries 26 resistors, 17 capacitors, 11 transistors, 10 connectors, 8 test points and 5 ICs.
It belongs with the dev boards & breakouts designs in this gallery.
From the project
This folder contains the hardware design files for the Captain Fantastic base control board and its companion HAT board.
Main components on the Hat board
Hat board bill of materials (BOM)
79 components, 26 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ~ | ).96 inOLED display SSD1306 | U1 |
| 1 | W25Q128 Winbond Elec | SOIC-8_L5.3-W5.3-P1.27-LS8.0-BL | U2 |
| 1 | MAX98357A | TQFN-16-1EP_3x3mm_P0.5mm_EP1.23x1.23mm | U4 |
| 2 | 74HC595D Nexperia | SOIC-16_L9.9-W3.9-P1.27-LS6.0-BL | U5, U6 |
| 11 | BSS138 hongjiacheng | Q_SOT-23 | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 +3 |
| 2 | Conn_01x10_Pin | PinHeader_1x10_P2.54mm_Vertical | J1, J3 |
| 1 | Connector_esp32_1x15 | PinSocket_1x15_P2.54mm_Vertical | J2 |
| 1 | B2B-XH-A(LF)(SN) Aux _SPK_conn JST Sales America Inc. | JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J4 |
| 1 | I2S HDR | PinHeader_1x06_P2.54mm_Vertical_SMD_Pin1Right | J5 |
| 1 | ~ | PinSocket_1x15_P2.54mm_Vertical | J6 |
| 2 | B4B-XH-A | JST_EH_B4B-EH-A_1x04_P2.50mm_Vertical | J7, J8 |
| 1 | Ball In play | JST_XH_B6B-XH-AM_1x06_P2.50mm_Vertical | J9 |
| 1 | Conn_01x07_Pin | JST_XH_B7B-XH-AM_1x07_P2.50mm_Vertical | J10 |
| 1 | 5015 Keystone Electronics | KEYSTONE_5015 | +5V1 |
| 7 | 5015 Keystone Electronics | KEYSTONE_5015 | TP1, TP2, TP3, TP4, TP6, TP7, TP8 |
| 1 | 5015 | KEYSTONE_5015 | TP5 |
| 1 | WS2812B | LED-SMD_4P-L1.6-W1.5_XL-1615RGBC-WS2812B | D1 |
| 3 | 100uF Samsung Electro-Mechanics | C_1206 | C1, C2, C3 |
| 8 | 100nF YAGEO | C_0805 | C4, C5, C12, C14, C15, C16, C17, C18 |
| 4 | 22uF Samsung Electro-Mechanics | C_0805 | C7, C8, C9, C10 |
Show 6 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 1uF Samsung Electro-Mechanics | C_0805 | C11, C13 |
| 6 | 10kΩ UNI-ROYAL(Uniroyal Elec) | R_0805 | R1, R2, R3, R11, R14, R15 |
| 6 | 0Ω UNI-ROYAL(Uniroyal Elec) | R_0805 | R4, R5, R7, R8, R9, R10 |
| 1 | 100kΩ UNI-ROYAL(Uniroyal Elec) | R_0805 | R6 |
| 2 | 4.7kΩ UNI-ROYAL(Uniroyal Elec) | R_0805 | R12, R13 |
| 11 | 270Ω UNI-ROYAL(Uniroyal Elec) | R_0805 | R16, R17, R18, R19, R20, R21, R22, R23 +3 |
Hat board design files
The KiCad project lives in the Phil-CIA/Captain-Fantastic-Control-and-Hat-Board repository on GitHub; these links point at the commit this page was built from.
Hat board: common questions
What microcontroller does the Hat board use?
The Hat board is built around the ).96 inOLED display SSD1306, from the ESP32 family.
How big is the Hat board?
The Hat board measures 73.2 × 99.9 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Hat board?
79 components, from 26 distinct parts. The full bill of materials is listed on this page.
Where can I download the Hat board design files?
From the Phil-CIA/Captain-Fantastic-Control-and-Hat-Board repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Hat board design in my own project?
The repository has no license, so all rights stay with Phil-CIA. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Hat board 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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