HardLabs

Balkon borg

hgn·balkon-borg·pcb/balkon-borg-carrier.kicad_pcb

Balkon borg PCB layout, top view — open source ESP32 board by hgn

About the Balkon borg PCB

Balkon borg is an open source ESP32 PCB design by hgn, published on GitHub. It is a 2-layer board measuring 150 × 92 mm, with 28 components from 11 distinct parts.

Its main chip is the ESP32-DevKitC L, from the ESP32 family. By type, the board carries 15 resistors, 4 transistors, 2 connectors, 2 capacitors and 1 fuse.

From the project

The ESP32 front panel: THT, 2 layers, made at Aisler. Binding source of truth: docs/board-spec.md. Decisions are in the project log (../log/decisions.md).

The ESP32 front panel: THT, 2 layers, made at Aisler. Binding source of truth: docs/board-spec.md. Decisions are in the project log (../log/decisions.md).

The schematic — including the correct ESP32-DevKitC-V4 pin mapping — is described in code and turned into a KiCad netlist; placement and routing are scripted so the board is reproducible.

1. Netlist from gen-netlist.py (SKiDL) → balkon-borg-carrier.net:

Balkon borg, from the project README
From the project README

Balkon borg bill of materials (BOM)

28 components, 11 distinct parts.

QtyPartRefs
4
BC337
Q1, Q2, Q3, Q4
1
ESP32-DevKitC L
J2
1
ESP32-DevKitC R
J3
1
2A
F1
4
Taster
J_BTN1, J_BTN2, J_BTN3, J_BTN4
1
10uF
C1
1
100nF
C2
2
220
R1, R2
2
4k7
R3, R4
7
100
R5, R6, R7, R8, R10, R12, R14
4
1k
R9, R11, R13, R15

Balkon borg design files

The KiCad project lives in the hgn/balkon-borg repository on GitHub; these links point at the commit this page was built from.

Balkon borg: common questions

What microcontroller does the Balkon borg use?

The Balkon borg is built around the ESP32-DevKitC L, from the ESP32 family.

How big is the Balkon borg PCB?

The Balkon borg measures 150 × 92 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Balkon borg?

28 components, from 11 distinct parts. The full bill of materials is listed on this page.

Where can I download the Balkon borg design files?

From the hgn/balkon-borg repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Balkon borg design in my own project?

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

Can I test firmware for the Balkon borg 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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