HardLabs

Pb-Monitor v2

ElektorLabs·Pb-Monitor-v2·hardware/PbMonitor-v2/PbMonitor-v2.kicad_pcb

Pb-Monitor v2 PCB layout, top view — open source ESP32 board by ElektorLabs

About the Pb-Monitor v2 PCB

Pb-Monitor v2 is an open source ESP32 PCB design by ElektorLabs, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 68.4 × 51.1 mm, with 68 components from 37 distinct parts.

Its main chip is the ESP32-C6-MINI-1/U, from the ESP32 family. Other key parts include the ZLDO1117QK50TC, NCP167BFCT330T2G, TLV9004xRUCR and TLA2518IRTER. By type, the board carries 24 resistors, 22 capacitors, 10 relays, 4 ICs, 3 diodes and 2 switches.

It belongs with the sensors and displays & leds designs in this gallery.

From the project

PbMonitor v2.0

A compact, open-source battery monitoring system for 48V battery banks. Built around the ESP32-C6 Mini, it reads four voltage taps, bidirectional current, and up to four temperature sensors — displaying live data on a 0.96" OLED and flagging faults through status LEDs and serial output.

- Voltage monitoring — measures four independent taps (12V, 32V, 48V, 64V) via a 12-bit SPI ADC - Bidirectional current — charge and discharge detection with configurable sensitivity - Temperature — up to 4× DS18B20 sensors on a single OneWire bus, fully bit-banged (no external library) - Live OLED display —…

Main components on the Pb-Monitor v2

ZLDO1117QK50TCNCP167BFCT330T2GTLV9004xRUCRTLA2518IRTERESP32-C6-MINI-1/U

Pb-Monitor v2 bill of materials (BOM)

68 components, 37 distinct parts.

QtyPartRefs
1
ZLDO1117QK50TC
IC1
1
NCP167BFCT330T2G
IC2
1
TLV9004xRUCR
IC3
1
TLA2518IRTER
IC4
1
ESP32-C6-MINI-1/U
MOD1
2
OLED
K1, K3
1
UJ20-C-H-C-3-SMT-TR
K2
1
B2 Temp
K4
1
B1 Temp
K5
1
B4 Temp
K6
1
B3 Temp
K7
1
PinHeader_2x03_P2.54mm_Vertical
PROG
K8
1
JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal
Qwiic
K9
1
Current Sensor
K15
1
SKRKAEE020
BOOT
SW1
1
SKRKAEE020
EN
SW2
1
NCD0805G1
LED1
1
NCD0805R1
LED2
2
B140HW-7
Diodes Incorporated
D1, D2
1
SMF05C.TCT
D3
Show 17 more
QtyPartRefs
1
C0805C104M5RACTU
10uF
C1
3
C0805C104M5RACTU
0.1uF
C2, C7, C8
2
10uF
C3, C4
5
1uF
C5, C6, C16, C19, C21
1
C1608X7R1H104K080AA
0.1uF
C9
5
4.7nF
C10, C11, C12, C13, C20
4
C0805C183K2RACTU
0.01uF
C14, C15, C18, C22
1
865080340001
10uF
C17
4
RCS060310K0FKEA
10k
R1, R6, R7, R8
2
RCS06034K70FKEA
4.7k
R2, R3
2
CHP0805-FX-1001ELF
1k
R4, R5
1
1.47M
R9
4
47k
R10, R14, R18, R23
8
100R
R11, R12, R15, R16, R19, R20, R22, R24
1
1.10M
R13
1
732k
R17
1
332k
R21

Pb-Monitor v2 design files

The KiCad project lives in the ElektorLabs/Pb-Monitor-v2 repository on GitHub; these links point at the commit this page was built from.

Pb-Monitor v2: common questions

What microcontroller does the Pb-Monitor v2 use?

The Pb-Monitor v2 is built around the ESP32-C6-MINI-1/U, from the ESP32 family.

How big is the Pb-Monitor v2 PCB?

The Pb-Monitor v2 measures 68.4 × 51.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Pb-Monitor v2?

68 components, from 37 distinct parts. The full bill of materials is listed on this page.

Where can I download the Pb-Monitor v2 design files?

From the ElektorLabs/Pb-Monitor-v2 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Pb-Monitor v2 design in my own project?

Yes, under the terms of its GPL-3.0 license, which ElektorLabs chose for the repository.

Can I test firmware for the Pb-Monitor v2 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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