HardLabs

LV PCB

luftaquila·a-fa-schematics·PCBs/LV_PCB v2/LV_PCB.kicad_pcb

LV PCB layout, top view — open source ESP32 board by luftaquila
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About the LV PCB

LV PCB is an open source ESP32 PCB design by luftaquila, published on GitHub. It is a 2-layer board measuring 293.1 × 125.3 mm, with 159 components from 73 distinct parts.

Its main chip is the ESP32-WROOM-32D, from the ESP32 family. Other key parts include the NE555D, LM311, AMS1117-3.3, 5V Converter and 3.3V Converter. By type, the board carries 64 resistors, 19 ICs, 17 diodes, 16 connectors, 14 transistors and 10 capacitors.

From the project

E-Formula 전기시스템 회로도 및 PCB 설계도, 배선도

회로도 EV.kicadpro KiCAD 6.0 프로젝트 메인 회로도입니다. 추상적으로 차량의 모든 고전압/저전압 전기 계통이 표현되어 있습니다. 메인 회로도 하위의 계층 회로도는 개별 구성 요소를 추상화합니다. 계층 회로도 중 /PCB` 폴더 하위의 파일들은 실제 PCB의 회로도입니다.

PCB /PCB/\.kicadpcb KiCAD 6.0 PCB 아트워크 각 PCB 폴더는 하나의 독립적인 KiCAD 프로젝트입니다. 메인 회로도인 EV.kicadsch 파일이 계층 회로 구성을 통해 각 PCB 폴더의 .kicadsch 파일을 가리키는 방식으로 서로 연결되어 있습니다.

배선 wirings * 차량의 모든 외부 배선을 표현하는 WireViz 배선 체계도입니다.

LV PCB, from the project README
From the project README

Main components on the LV PCB

NE555DLM311AMS1117-3.35V Converter3.3V ConverterCAN_TRANSCEIVERD302ADXL345NEO-7MESP32-WROOM-32DDFR0299LM555xNSTM32F407VETx

LV PCB bill of materials (BOM)

159 components, 73 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
NE555D
U1
6
LM311
U2, U3, U16, U17, U18, U19
1
AMS1117-3.3
U4
1
5V Converter
U5
1
3.3V Converter
U6
1
CAN_TRANSCEIVER
U7
1
D302
U8
1
ADXL345
U9
1
NEO-7M
U10
1
ESP32-WROOM-32D
U11
1
DFR0299
U12
2
LM555xN
U13, U14
1
STM32F407VETx
U15
4
IRF640
Q1, Q2, Q4, Q7
1
IRF9540N
Q3
9
2N3904
Q5, Q6, Q8, Q9, Q10, Q11, Q12, Q13 +1
5
5267-12AX
J1, J2, J4, J10, J12
1
5267-08AX
J3
1
Conn_01x14_Female
J5
1
Conn_01x04_Female
J6
Show 53 more
QtyPartRefs
1
5267-10AX
J7
3
Conn_01x02_Female
J8, J11, J13
2
Conn_01x02_Female
J9, J14
2
Conn_01x01_Female
J15, J16
1
10uF
10uF1
1
8A
F1
5
HR702NH-DC12V
K1, K2, K3, K4, K5
1
HR90L2_12V
K6
1
RLY_{BMS
RLY1
1
RLY_{IMD
RLY2
1
RLY_{BSPD
RLY3
1
TUNE_{BRAKE
RV1
1
TUNE_{HALL
RV2
1
CAN_{DEBUG
SW1
1
CAN_{ECU
SW2
1
CAN_{BMS
SW3
1
CAN_{INV
SW4
1
CAN_{LOGGER
SW5
1
ESP_{PROGRAM
SW8
1
OK_{LV
D1
1
FAULT_{BMS
D2
1
OK_{AUX
D3
1
OK_{BMS
D4
1
FAULT_{IMD
D5
1
OK_{IMD
D6
1
FAULT_{BSPD
D7
1
OK_{BSPD
D8
1
BSPD_GATE
D9
1
OK_{HV
D10
1
ERR_{SYS
D11
1
ERR_{CAN
D12
1
_{HEARTBEAT
D13
1
_{SD
D14
1
_{CAN
D15
1
_{ESP
D16
1
RTD
D17
4
1nF
C1, C2, C3, C4
2
100uF
C5, C6
4
100nF
C7, C8, C9, C10
6
5k
R1, R5, R6, R7, R8, R24
2
100k
R2, R3
15
10k
R4, R12, R15, R26, R27, R28, R29, R30 +7
1
240K
R9
3
220
R10, R20, R21
10
1k
R11, R14, R16, R19, R34, R35, R36, R37 +2
1
120
R13
1
200k
R17
1
51k
R18
2
4M
R22, R23
10
100
R25, R33, R41, R42, R49, R59, R60, R61 +2
5
3.3k
R39, R40, R43, R44, R46
1
4.7k
R50
6
2.7k
R52, R53, R54, R56, R57, R58

LV PCB design files

The KiCad project lives in the luftaquila/a-fa-schematics repository on GitHub; these links point at the commit this page was built from.

LV PCB: common questions

What microcontroller does the LV PCB use?

The LV PCB is built around the ESP32-WROOM-32D, from the ESP32 family.

How big is the LV PCB?

The LV PCB measures 293.1 × 125.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the LV PCB?

159 components, from 73 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 LV PCB design files?

From the luftaquila/a-fa-schematics 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 LV PCB design in my own project?

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

Can I test firmware for the LV PCB 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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