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66x66

UC-Aerospace·Electrical-Tut-24·Template Outlines/66x66/66x66.kicad_pcb

66x66 PCB layout, top view — open source RP2040/RP2350 board by UC-Aerospace

About the 66x66 PCB

66x66 is an open source RP2040/RP2350 PCB design by UC-Aerospace, published on GitHub. It is a 2-layer board measuring 66 × 66 mm, with 34 components from 27 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the W25Q128JVSIQ and C6186. By type, the board carries 10 resistors, 7 test points, 5 connectors, 3 ICs, 3 capacitors and 1 crystal.

From the project

Demo boards for the electrical tutorials

(50mm x 50mm) This shows it's possible to design a 2-layer 50mm x 50mm board to fit the minimum rocket tube diameter of 50mm. Made by Grayson. This is the one we have ordered and will be avalible to pass around.

~~(66mm x 66mm) This 2-layer example board is slightly bigger but small enough to fit in an L2 rocket. Made by Kaden.~~ Unfortunatly this board has some issues at the moment, we might look into fixing it. Left for now as it shows a different general approach.

Main components on the 66x66

W25Q128JVSIQRP2040C6186

66x66 bill of materials (BOM)

34 components, 27 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
W25Q128JVSIQ
W25Q128JVPIQ TR
U1
1
RP2040
U2
1
C6186
~
U3
1
X322512MMB4SI
12MHz
Y1
1
B2B-XH-A(LF)(SN)
Conn_01x02
J1
1
2.54-1*2P
Conn_01x02
J2
1
GT-USB-7010ASV
USB_C_Receptacle_USB2.0_14P
J3
1
2.54-1*3P
Conn_01x03
J4
1
2.54-1*4
Conn_01x04
J5
4
MountingHole
H1, H2, H3, H4
1
KH-6X6X5H-STM
Reset
SW1
1
GND
TP1
1
D-
TP2
1
D+
TP3
1
USB_BOOT
TP4
1
USB_DET
TP5
1
RST
TP6
1
INT_1
TP7
1
CL21B104KCFNNNE
100nF
C1
2
0603N270J500CT
20pF
C2, C3
Show 7 more
QtyPartRefs
1
0805W8F0000T5E
0R
R1
1
0805W8F1001T5E
1k
R2
1
DNP
R3
1
0805W8F5601T5E
5.6k
R4
2
0805W8F5101T5E
5.1k
R5, R6
2
0805W8F1002T5E
10k
R7, R8
2
0805W8F274JT5E
27.4
R9, R10

66x66 design files

The KiCad project lives in the UC-Aerospace/Electrical-Tut-24 repository on GitHub; these links point at the commit this page was built from.

66x66: common questions

What microcontroller does the 66x66 use?

The 66x66 is built around the RP2040, from the RP2040/RP2350 family.

How big is the 66x66 PCB?

The 66x66 measures 66 × 66 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the 66x66?

34 components, from 27 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 66x66 design files?

From the UC-Aerospace/Electrical-Tut-24 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 66x66 design in my own project?

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

Can I test firmware for the 66x66 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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