HardLabs

Hub board v1

felixfelix-bot·balloon-fresh·tracker/hardware/hub_board_v1.kicad_pcb

Hub board v1 layout, top view — open source RP2040/RP2350 board by felixfelix-bot

About the Hub board v1

Hub board v1 is an open source RP2040/RP2350 PCB design by felixfelix-bot, published on GitHub. It is a 2-layer board measuring 50 × 40 mm, with 21 components from 14 distinct parts.

Its main chip is the RP2040-Zero, from the RP2040/RP2350 family. Other key parts include the LoRa2021, MAX-M10S, MS5611 and TPS7A02. By type, the board carries 7 capacitors, 5 ICs, 5 resistors, 2 antennas and 2 diodes.

It belongs with the rf & radio and sensors designs in this gallery.

From the project

ESP32-C3 + NiceRF LoRa2021 (Semtech LR2021 Gen 4) pico balloon tracker + mesh transport

Ultraleichter (<15g) Pico-Balloon-Tracker basierend auf ESP32-C3 und Semtech LR2021 (LoRa Gen 4).

- Multi-Band LoRa: 2.4 GHz ISM (weltweit lizenzfrei) + Sub-GHz (868/915 MHz) - FLRC High-Speed: Bis 2.6 Mbps fuer kurze Distanzen - 3D Antennen-Array: 4 PCB-Yagi Antennen in verschiedenen Raumrichtungen - Adaptive Moduswahl: Automatischer Wechsel zwischen FLRC/LoRa/Sub-GHz - Solar + Supercap Stromversorgung: Keine Batterie noetig - SKY66112 FEM: +22 dBm TX, +14 dB LNA RX - BMP280 Sensor: Druck, Hoehe, Temperatur - Dual-Track Hardware: Dev-Board (XIAO) + Flight-Board (Bare-Chip)

Main components on the Hub board v1

RP2040-ZeroLoRa2021MAX-M10SMS5611TPS7A02

Hub board v1 bill of materials (BOM)

21 components, 14 distinct parts.

QtyPartRefs
1
RP2040-Zero
U1
1
LoRa2021
U2
1
MAX-M10S
U3
1
MS5611
U4
1
TPS7A02
U5
1
868MHz
AE1
1
2.4GHz
AE2
1
BAT54
D1
1
STATUS
D2
5
100nF
C1, C2, C3, C5, C6
2
10uF
C4, C7
2
4.7k
R1, R2
2
1M
R3, R4
1
330R
R5

Hub board v1 design files

The KiCad project lives in the felixfelix-bot/balloon-fresh repository on GitHub; these links point at the commit this page was built from.

Hub board v1: common questions

What microcontroller does the Hub board v1 use?

The Hub board v1 is built around the RP2040-Zero, from the RP2040/RP2350 family.

How big is the Hub board v1?

The Hub board v1 measures 50 × 40 mm, has 2 copper layers and is 0.6 mm thick.

How many components are on the Hub board v1?

21 components, from 14 distinct parts. The full bill of materials is listed on this page.

Where can I download the Hub board v1 design files?

From the felixfelix-bot/balloon-fresh repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Hub board v1 design in my own project?

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

Can I test firmware for the Hub board v1 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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