HardLabs

Akash-Chowa-DX

Hasnat4763·Akash-Chowa-DX·PCB/Akash Chowa DX.kicad_pcb

Akash-Chowa-DX PCB layout, top view — open source RP2040/RP2350 board by Hasnat4763

About the Akash-Chowa-DX PCB

Akash-Chowa-DX is an open source RP2040/RP2350 PCB design by Hasnat4763, published on GitHub under the MIT license. It is a 4-layer board measuring 98.5 × 70.9 mm, with 44 components from 29 distinct parts.

Its main chip is the RP2040-ZERO, from the RP2040/RP2350 family. Other key parts include the Si4735-D60-GU, TPA6132A2RTE and PE4259. By type, the board carries 13 capacitors, 6 switches, 4 ICs, 4 connectors, 4 inductors and 2 antennas.

It belongs with the power & battery, audio and displays & leds designs in this gallery.

From the project

Akash Chowa DX is a SW/MW/LW receiver designed based on the Si4735 Radio receiver IC paired with the RP2040 Zero Dev board.

Akash Chowa DX is a SW/MW/LW receiver designed based on the Si4735 Radio receiver IC paired with the RP2040 Zero Dev board.

I had an affection towards Radios from childhood. I sometimes try to receive SW stations on my 5$ budget radio I had gotten from a local store. But It does not work that efficiently and I needed a better receiver. Also the radio I currently have can not demodulate SSB (Single Sideband) and RDS transmitted by modern FM stations. So I designed it to fulfill my own requirements. It also helped me learn new things like impedance control.

Akash-Chowa-DX, from the project README
From the project README

Main components on the Akash-Chowa-DX

Si4735-D60-GURP2040-ZEROTPA6132A2RTEPE4259

Akash-Chowa-DX bill of materials (BOM)

44 components, 29 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
Si4735-D60-GU
U1
1
RP2040-ZERO
U2
1
TPA6132A2RTE
U4
1
PE4259
U5
1
32.768 kHz
Y1
1
OLED
J2
1
Speaker
J3
1
Battery Connection
J4
1
Conn_01x01_Socket
J5
1
Antenna_Shield
AE1
1
Antenna_Loop
AE2
6
1N4148
Diode1, Diode2, Diode3, Diode4, Diode5, Diode6
6
SW_Push
SW2, SW3, SW4, SW5, SW6, SW7
1
1N5819
D1
1
PRTR5V0U2X
D10
1
2.5K
FB1
1
1k
FB2
1
180nH
L2
1
4.7uH
L3
1
2.2uF
C1
Show 9 more
QtyPartRefs
2
1uF
C2, C7
2
22pF
C3, C4
3
0.47uF
C5, C6, C10
1
33pF
C11
1
0.1uF
C12
1
18pF
C14
1
22nF
C19
1
100nF
C20
2
100k
R3, R5

Akash-Chowa-DX design files

The KiCad project lives in the Hasnat4763/Akash-Chowa-DX repository on GitHub; these links point at the commit this page was built from.

Akash-Chowa-DX: common questions

What microcontroller does the Akash-Chowa-DX use?

The Akash-Chowa-DX is built around the RP2040-ZERO, from the RP2040/RP2350 family.

How big is the Akash-Chowa-DX PCB?

The Akash-Chowa-DX measures 98.5 × 70.9 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Akash-Chowa-DX?

44 components, from 29 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 Akash-Chowa-DX design files?

From the Hasnat4763/Akash-Chowa-DX 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 Akash-Chowa-DX design in my own project?

Yes, under the terms of its MIT license, which Hasnat4763 chose for the repository.

Can I test firmware for the Akash-Chowa-DX 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.

Similar boards