HardLabs

Freefall

onlyth3best·Freefall·pcb/kicad/Untitled.kicad_pcb

Freefall PCB layout, top view — open source RP2040/RP2350 board by onlyth3best

About the Freefall PCB

Freefall is an open source RP2040/RP2350 PCB design by onlyth3best, published on GitHub. It is a 2-layer board measuring 42.2 × 71.4 mm, with 14 components from 7 distinct parts.

Its main chip is the XIAO-RP2040-DIP, from the RP2040/RP2350 family. Other key parts include the MMA8452QR1. By type, the board carries 4 diodes, 4 resistors, 3 capacitors, 2 ICs and 1 LED.

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

From the project

a PCB with an accelerometer…

Freefall, from the project README
From the project README

Main components on the Freefall

MMA8452QR1XIAO-RP2040-DIP

Freefall bill of materials (BOM)

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

QtyPartRefs
1
MMA8452QR1
U1
1
XIAO-RP2040-DIP
U2
1
OLED_128X64_1.3_I2C
DS1
4
L08R5000Q1
D1, D2, D3, D4
2
0.1uF
C1, C2
1
4.7uF
C3
4
R
R1, R2, R3, R4

Freefall design files

The KiCad project lives in the onlyth3best/Freefall repository on GitHub; these links point at the commit this page was built from.

Freefall: common questions

What microcontroller does the Freefall use?

The Freefall is built around the XIAO-RP2040-DIP, from the RP2040/RP2350 family.

How big is the Freefall PCB?

The Freefall measures 42.2 × 71.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Freefall?

14 components, from 7 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 Freefall design files?

From the onlyth3best/Freefall 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 Freefall design in my own project?

The repository has no license, so all rights stay with onlyth3best. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Freefall 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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