HardLabs

Nebulatune

z0b1·nebulatune·PCB/nebula/nebula.kicad_pcb

Nebulatune PCB layout, top view — open source RP2040/RP2350 board by z0b1

About the Nebulatune PCB

Nebulatune is an open source RP2040/RP2350 PCB design by z0b1, published on GitHub under the MIT license. It is a 2-layer board measuring 105 × 65 mm, with 19 components from 16 distinct parts.

Its main chip is the XIAO-RP2350-DIP, from the RP2040/RP2350 family. Other key parts include the TDA2003. By type, the board carries 8 capacitors, 2 ICs, 2 connectors, 2 diodes, 1 antenna and 1 speaker.

It belongs with the rf & radio, displays & leds and audio designs in this gallery.

From the project

NebulaTune is a HF reciever with a direct conversion single balanced diode product detector and a Si5351 as a local VFO. The VFO, encoder and the display are all controlled by the RP2350. I will get parts soon and start documenting the build process. Website soon

NebulaTune is a HF reciever utilizng a Direct Conversion Single Balanced Diode Product Detector along with an RP2350 to display and choose frequency and recieve with an digital encoder!

- Adjustable VFO with a rotary encoder; - Frequency display; - Direct Conversion Single Balanced Diode Product Detector; - Speaker or headphones output; - Wide range of frequencies(3-30MHz); - Local oscillator high stability crystal Si5351 by SiliconLabs; - SDR and waterfall display soon™.

Nebulatune, from the project README
From the project README

Main components on the Nebulatune

TDA2003XIAO-RP2350-DIP

Nebulatune bill of materials (BOM)

19 components, 16 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
TDA2003
U1
1
XIAO-RP2350-DIP
U2
1
Si5351 Module
J1
1
OLED 128x64 I2C
J2
1
Antenna
AE1
1
8Ω
LS1
1
1k
RV1
1
RotaryEncoder_Switch
SW1
2
1N4148
D1, D2
1
60
C1
3
10N
10n
C2, C7, C8
1
470N
470n
C3
1
22U/10V
22u/10V
C4
1
100U/16V
100u/16V
C5
1
100N
100n
C6
1
1
R1

Nebulatune design files

The KiCad project lives in the z0b1/nebulatune repository on GitHub; these links point at the commit this page was built from.

Nebulatune: common questions

What microcontroller does the Nebulatune use?

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

How big is the Nebulatune PCB?

The Nebulatune measures 105 × 65 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Nebulatune?

19 components, from 16 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 Nebulatune design files?

From the z0b1/nebulatune 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 Nebulatune design in my own project?

Yes, under the terms of its MIT license, which z0b1 chose for the repository.

Can I test firmware for the Nebulatune 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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