HardLabs

0xEntropy

dudleydehenau·0xEntropy·kicad/0xEntropy.kicad_pcb

0xEntropy PCB layout, top view — open source RP2040/RP2350 board by dudleydehenau

About the 0xEntropy PCB

0xEntropy is an open source RP2040/RP2350 PCB design by dudleydehenau, published on GitHub. It is a 2-layer board measuring 163.5 × 40.5 mm, with 38 components from 15 distinct parts.

Its main chip is the RaspberryPi_Pico, from the RP2040/RP2350 family. Other key parts include the MT3608, MCP6002-XP and LM393. By type, the board carries 16 resistors, 12 capacitors, 3 ICs, 2 diodes, 1 module and 1 connector.

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

From the project

0xEntropy is a standalone hardware entropy generator. It harnesses the physical phenomenon of avalanche breakdown in a Zener diode to capture non-deterministic quantum noise, amplifies it, digitizes it at high speed using the Raspberry Pi Pico PIO state machines, and applies real

0xEntropy is a standalone hardware entropy generator. It harnesses the physical phenomenon of avalanche breakdown in a Zener diode to capture non-deterministic quantum noise, amplifies it, digitizes it at high speed using the Raspberry Pi Pico PIO state machines, and applies real-time SHA-256 cryptographic whitening.

The system features an onboard touchscreen interface, continuous health monitoring, and streams random data over USB.

0xEntropy, from the project README
From the project README

Main components on the 0xEntropy

MT3608MCP6002-XPLM393RaspberryPi_Pico

0xEntropy bill of materials (BOM)

38 components, 15 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
MT3608
U1
1
MCP6002-XP
MCP6002-xP
U2
1
LM393
U3
1
RaspberryPi_Pico
A2
1
CONN_01X12_PIN
Conn_01x12_Pin
J1
1
Buzzer
BZ1
2
10K
10k
RV1, RV2
2
12V
12v
D1, D2
7
100NF
100nF
C1, C3, C4, C5, C6, C9, C11
5
10µF
C2, C7, C8, C10, C13
4
2.2K
2.2k
R1, R7, R8, R16
6
10K
R2, R5, R9, R11, R12, R13
2
220
R3, R4
2
1k
R6, R14
2
5.1M
R10, R15

0xEntropy design files

The KiCad project lives in the dudleydehenau/0xEntropy repository on GitHub; these links point at the commit this page was built from.

0xEntropy: common questions

What microcontroller does the 0xEntropy use?

The 0xEntropy is built around the RaspberryPi_Pico, from the RP2040/RP2350 family.

How big is the 0xEntropy PCB?

The 0xEntropy measures 163.5 × 40.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the 0xEntropy?

38 components, from 15 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 0xEntropy design files?

From the dudleydehenau/0xEntropy 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 0xEntropy design in my own project?

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

Can I test firmware for the 0xEntropy 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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