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PressLog

bansalsaksham·PressLog·Hardware_Source/PressLog_Edge_Node.kicad_pcb

PressLog PCB layout, top view — open source ESP32 board by bansalsaksham
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About the PressLog PCB

PressLog is an open source ESP32 PCB design by bansalsaksham, published on GitHub. It is a 2-layer board measuring 117 × 81.5 mm, with 45 components from 17 distinct parts.

Its main chip is the ESP32-S3-WROOM-1, from the ESP32 family. Other key parts include the LM2596S-5, AMS1117 and DS3231M. By type, the board carries 16 resistors, 14 capacitors, 7 connectors, 4 ICs, 2 diodes and 1 battery holder.

It belongs with the iot & wireless and power & battery designs in this gallery.

From the project

Manufacturing-ready PCB design for an industrial IoT downtime-logging edge node. Offline-first firmware architecture, KiCad schematics, Gerbers, and BOM.

A manufacturing-ready PCB and firmware architecture for capturing machine downtime reasons on a factory floor.

OEE (Overall Equipment Effectiveness) is only as good as its data. But capturing downtime reasons at the machine edge is a human-interface problem as much as a software one. The factory floor kills conventional UX.

- Physical First — Six large 30mm illuminated tactile buttons, one per reason code. No menus, no navigation, no scrolling. One press = one logged event, confirmed by an LED flash, an 85dB buzzer, and vibration. - Offline First — Every press is timestamped via a DS3231…

Main components on the PressLog

LM2596S-5AMS1117ESP32-S3-WROOM-1DS3231M

PressLog bill of materials (BOM)

45 components, 17 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
LM2596S-5
U1
1
AMS1117
U2
1
ESP32-S3-WROOM-1
U3
1
DS3231M
U4
7
CONN_01X02
Conn_01x02
J1, J2, J3, J4, J5, J6, J7
1
Battery_Cell
BT1
1
D_TVS
D1
1
D_Schottky
D2
1
33UH
33uH
L1
1
100UF
100uF
C1
1
220UF
220uF
C2
3
10UF
10uF
C3, C4, C5
8
0.1UF
0.1uF
C6, C8, C9, C10, C11, C12, C13, C14
1
1UF
1uF
C7
2
10kΩ
R1, R2
2
4.7K
4.7k
R3, R4
12
10K
10k
R5, R6, R7, R8, R9, R10, R11, R12 +4

PressLog design files

The KiCad project lives in the bansalsaksham/PressLog repository on GitHub; these links point at the commit this page was built from.

PressLog: common questions

What microcontroller does the PressLog use?

The PressLog is built around the ESP32-S3-WROOM-1, from the ESP32 family.

How big is the PressLog PCB?

The PressLog measures 117 × 81.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the PressLog?

45 components, from 17 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 PressLog design files?

From the bansalsaksham/PressLog 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 PressLog design in my own project?

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

Can I test firmware for the PressLog 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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