HardLabs

PUFA

sergio-isidoro·PUFA·PUFA_KICAD/PUFA.kicad_pcb

PUFA PCB layout, top view — open source AVR/Arduino board by sergio-isidoro

About the PUFA PCB

PUFA is an open source AVR/Arduino PCB design by sergio-isidoro, published on GitHub. It is a 2-layer board measuring 37 × 37 mm, with 18 components from 8 distinct parts.

Its main chip is the ATmega328P-A, from the AVR/Arduino family. Other key parts include the AP2114HA_3.3V. By type, the board carries 6 resistors, 5 capacitors, 4 diodes and 1 IC.

It belongs with the sensors and wearables designs in this gallery.

From the project

Heart Rate Bracelet and Accelerometer

https://github.com/user-attachments/assets/bb75e299-b183-4e6a-995e-6fe85692a9c1

PUFA, from the project README
From the project README

Main components on the PUFA

AP2114HA_3.3V

PUFA bill of materials (BOM)

18 components, 8 distinct parts.

QtyPartRefs
1
AP2114HA_3.3V
U2
1
ATmega328P-A
Atmega328p1
1
PinHeader_2x04_P2.54mm_Vertical
ESP01
2
LED_0603_1608Metric
D1, D2
1
M7
D_1206_3216Metric
D3
1
D_1206_3216Metric
D4
5
C_0603_1608Metric
C1, C2, C3, C4, C5
6
R_0603_1608Metric_Pad0.98x0.95mm_HandSolder
R1, R2, R3, R4, R5, R6

PUFA design files

The KiCad project lives in the sergio-isidoro/PUFA repository on GitHub; these links point at the commit this page was built from.

PUFA: common questions

What microcontroller does the PUFA use?

The PUFA is built around the ATmega328P-A, from the AVR/Arduino family.

How big is the PUFA PCB?

The PUFA measures 37 × 37 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the PUFA?

18 components, from 8 distinct parts. The full bill of materials is listed on this page.

Where can I download the PUFA design files?

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

Can I use the PUFA design in my own project?

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

Can I test firmware for the PUFA without the hardware?

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

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