HardLabs

Junction

DLaxV-Community-Projects-Hub·Open-Shot-Clock·pcb/junction/junction.kicad_pcb

Junction PCB layout, top view — open source ESP32 board by DLaxV-Community-Projects-Hub
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About the Junction PCB

Junction is an open source ESP32 PCB design by DLaxV-Community-Projects-Hub, published on GitHub under the CERN-OHL-P-2.0 license. It is a 2-layer board measuring 85 × 65 mm, with 7 components from 5 distinct parts.

Its main chip is the ESP32-S3-MINI-1, from the ESP32 family. Other key parts include the SP3485EN and E220-400M22S. By type, the board carries 4 connectors and 3 ICs.

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

From the project

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- 10" super bright LED digits (in color of your choice) - indoor and outdoor usage - impact and water resistant portable design - LED brightness adjustable to your needs - wireless and cable connection - 12V input supply (portable battery or mains operation by AC-DC power supply) - handheld controller - wifi connection to smartphone - control option - settings change - firmware…

Junction, from the project README
From the project README

Main components on the Junction

ESP32-S3-MINI-1SP3485ENE220-400M22S

Junction bill of materials (BOM)

7 components, 5 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-S3-MINI-1
~
U1
1
SP3485EN
~
U2
1
E220-400M22S
~
U3
2
RJ45
J1, J4
2
RJ45
J2, J3

Junction design files

The KiCad project lives in the DLaxV-Community-Projects-Hub/Open-Shot-Clock repository on GitHub; these links point at the commit this page was built from.

Junction: common questions

What microcontroller does the Junction use?

The Junction is built around the ESP32-S3-MINI-1, from the ESP32 family.

How big is the Junction PCB?

The Junction measures 85 × 65 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Junction?

7 components, from 5 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 Junction design files?

From the DLaxV-Community-Projects-Hub/Open-Shot-Clock 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 Junction design in my own project?

Yes, under the terms of its CERN-OHL-P-2.0 license, which DLaxV-Community-Projects-Hub chose for the repository.

Can I test firmware for the Junction 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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