HardLabs

Le2-avionics

calstar·le2-avionics·core_board/core_board.kicad_pcb

Le2-avionics PCB layout, top view — open source ESP32 board by calstar

About the Le2-avionics PCB

Le2-avionics is an open source ESP32 PCB design by calstar, published on GitHub. It is a 4-layer board measuring 375.9 × 152.4 mm, with 125 components from 32 distinct parts.

Its main chip is the ESP32-DEVKITC-32D, from the ESP32 family. Other key parts include the LD1117V33, SD_Card_Reader, PCF8575_Breakout, TCA9548A_Breakout and TPS54332DDAR. By type, the board carries 50 resistors, 18 capacitors, 14 test points, 11 diodes, 10 connectors and 9 ICs.

From the project

Hardware for LE2 data acquisition (DAQ) board.

Main components on the Le2-avionics

ESP32-DEVKITC-32DLD1117V33SD_Card_ReaderPCF8575_BreakoutTCA9548A_BreakoutTPS54332DDAR

Le2-avionics bill of materials (BOM)

125 components, 32 distinct parts.

QtyPartRefs
1
ESP32-DEVKITC-32D
U1
2
LD1117V33
U2, U3
2
SD_Card_Reader
U4, U5
1
PCF8575_Breakout
U6
1
TCA9548A_Breakout
U7
2
TPS54332DDAR
U8, U9
1
Conn_01x02
J1
1
UART Pins
J2
8
PCIE-LP-01-01-F-DV-A-TR
J3, J4, J5, J6, J7, J8, J9, J10
2
Jumper
JP1, JP2
1
Jumper_3_Bridged12
JP3
8
SW_Push
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8
14
TestPoint
TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10 +6
1
40V
D1
8
LED
D2, D3, D4, D5, D6, D7, D8, D9
2
B340
D10, D11
2
3.5uH
L1, L2
2
100nF
C1, C2
4
10uF
C3, C4, C5, C12
2
15nF
C6, C13
Show 12 more
QtyPartRefs
4
47uF
C7, C8, C14, C15
2
0.1uF
C9, C16
2
5pF
C10, C17
2
90pF
C11, C18
2
330
R1, R2
4
10k
R3, R9, R42, R48
9
1k
R4, R5, R6, R7, R8, R10, R11, R14 +1
25
4.7k
R12, R13, R16, R17, R18, R19, R20, R21 +17
4
150k
R39, R44, R45, R50
2
50k
R40, R46
2
1M
R41, R47
2
1.9k
R43, R49

Le2-avionics design files

The KiCad project lives in the calstar/le2-avionics repository on GitHub; these links point at the commit this page was built from.

Le2-avionics: common questions

What microcontroller does the Le2-avionics use?

The Le2-avionics is built around the ESP32-DEVKITC-32D, from the ESP32 family.

How big is the Le2-avionics PCB?

The Le2-avionics measures 375.9 × 152.4 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Le2-avionics?

125 components, from 32 distinct parts. The full bill of materials is listed on this page.

Where can I download the Le2-avionics design files?

From the calstar/le2-avionics repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Le2-avionics design in my own project?

The repository has no license, so all rights stay with calstar. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Le2-avionics 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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