HardLabs

Cs240lx-24spr

dddrrreee·cs240lx-24spr·labs/11-pcb/parthiv_pcb_v2.1/parthiv_pcb_v2.kicad_pcb

Cs240lx-24spr PCB layout, top view — open source Raspberry Pi board by dddrrreee

About the Cs240lx-24spr PCB

Cs240lx-24spr is an open source Raspberry Pi PCB design by dddrrreee, published on GitHub. It is a 2-layer board measuring 66.9 × 46.6 mm, with 30 components from 21 distinct parts.

Its main chip is the RASPBERRY_PI_2_3, from the Raspberry Pi family. Other key parts include the CP2102N-AXX-XQFN20 and NRF24L01. By type, the board carries 8 resistors, 6 connectors, 6 capacitors, 5 diodes, 3 ICs and 1 transistor.

From the project

all class materials for 240lx, spring 2024

This lab is focused on designing printed circuit boards (PCBs), which you may find useful in your final project. This is moreso a quick lesson on how to replace your bundles of wires with a more reliable board, rather than how to actually design electrical circuits on a board which is a much more involved discussion.

Our goal is to create a board that can plug into the Raspberry Pi GPIO header and connect to the USB/UART converter and 2 NRFs. You can also optionally add other devices to the board of your choosing. My board looks something like this:

Cs240lx-24spr, from the project README
From the project README

Main components on the Cs240lx-24spr

CP2102N-AXX-XQFN20NRF24L01

Cs240lx-24spr bill of materials (BOM)

30 components, 21 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
CP2102N-AXX-XQFN20
CP2102N-Axx-xQFN20
U1
2
NRF24L01
U2, U3
1
C326372
Q_PMOS_GDS
Q1
1
CONN_02X20_ODD_EVEN
Conn_02x10_Odd_Even
J1
1
C381143
Conn_02x10_Odd_Even
J2
1
ADAFRUIT_I2S_MIC
USB_B_Micro
J3
1
MPU6050
J4
1
RASPBERRY_PI_2_3
Ultrasonic
J5
1
Raspberry_Pi_2_3
J6
1
C318884
RESET
SW1
1
SP0503BAHT
D1
1
SP0503BAHT
LED
D2
3
LED
D3, D4, D5
2
10UF
10uF
C1, C2
2
4.7UF
4.7uF
C3, C5
2
100NF
100nF
C4, C6
1
10K
10k
R1
1
100
R2
4
1k
R3, R6, R7, R8
1
22K
22k
R4
Show 1 more
QtyPartRefs
1
47K
47k
R5

Cs240lx-24spr design files

The KiCad project lives in the dddrrreee/cs240lx-24spr repository on GitHub; these links point at the commit this page was built from.

Cs240lx-24spr: common questions

What microcontroller does the Cs240lx-24spr use?

The Cs240lx-24spr is built around the RASPBERRY_PI_2_3, from the Raspberry Pi family.

How big is the Cs240lx-24spr PCB?

The Cs240lx-24spr measures 66.9 × 46.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Cs240lx-24spr?

30 components, from 21 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 Cs240lx-24spr design files?

From the dddrrreee/cs240lx-24spr 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 Cs240lx-24spr design in my own project?

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

Can I test firmware for the Cs240lx-24spr without the hardware?

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

Earlier revisions in the repo: parthiv_pcb

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