HardLabs

SPD PowerMonitor

LedgerProject·sensix-power-monitor·hardware_design/SPD_PowerMonitor-Controller/SPD_PowerMonitor.kicad_pcb

SPD PowerMonitor PCB layout, top view — open source ESP32 board by LedgerProject

About the SPD PowerMonitor PCB

SPD PowerMonitor is an open source ESP32 PCB design by LedgerProject, published on GitHub under the MIT license. It is a 4-layer board measuring 47.5 × 37 mm, with 31 components from 12 distinct parts.

Its main chip is the ESP32-WROOM-32U, from the ESP32 family. Other key parts include the TC1262-33, MAX3485 and CP2102N-A01-GQFN24. By type, the board carries 10 resistors, 8 capacitors, 7 connectors, 4 ICs and 2 transistors.

From the project

Sensix PowerMonitor

Built with Software used Directory structure Flash instructions Running tests Hardware Design

ESP-IDF Toolchain CMake Arduino ADE9153a minfft fmtlib Microsoft GSL

3rdparty: Third party code and dependencies cmake: Additional CMake scripts used to configure and build the project data: Resources embedded in the final binary hardwaredesign: Hardware design files main: ESP IDF component src: Source code src/include: Header files test`: Unit tests (meant to be run on PC)

Main components on the SPD PowerMonitor

ESP32-WROOM-32UTC1262-33MAX3485CP2102N-A01-GQFN24

SPD PowerMonitor bill of materials (BOM)

31 components, 12 distinct parts.

QtyPartRefs
1
ESP32-WROOM-32U
U1
1
TC1262-33
U2
1
MAX3485
U3
1
CP2102N-A01-GQFN24
U4
2
Q_NPN_BEC
Q1, Q2
1
Conn_01x08
J1
1
Conn_01x04
J2
1
Conn_01x10
J3
3
Conn_01x03
J4, J6, J7
1
USB_B_Micro
J5
8
C
C1, C2, C3, C4, C5, C6, C7, C8
10
R
R1, R2, R3, R4, R5, R6, R7, R8 +2

SPD PowerMonitor design files

The KiCad project lives in the LedgerProject/sensix-power-monitor repository on GitHub; these links point at the commit this page was built from.

SPD PowerMonitor: common questions

What microcontroller does the SPD PowerMonitor use?

The SPD PowerMonitor is built around the ESP32-WROOM-32U, from the ESP32 family.

How big is the SPD PowerMonitor PCB?

The SPD PowerMonitor measures 47.5 × 37 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the SPD PowerMonitor?

31 components, from 12 distinct parts. The full bill of materials is listed on this page.

Where can I download the SPD PowerMonitor design files?

From the LedgerProject/sensix-power-monitor repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the SPD PowerMonitor design in my own project?

Yes, under the terms of its MIT license, which LedgerProject chose for the repository.

Can I test firmware for the SPD PowerMonitor 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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