Cosmic library

Normansrule·cosmic-library·experiments/30-flight-computer-pcb/hardware/kicad/cc-flight-logger.kicad_pcb

About the Cosmic library PCB

Cosmic library is an open source RP2040/RP2350 PCB design by Normansrule, published on GitHub under the MIT license. It is a 2-layer board measuring 80 × 30 mm, with 45 components from 27 distinct parts.

Its main chip is the SC0915, from the RP2040/RP2350 family. Other key parts include the MCP73831T-2ACI/OT, LSM6DSO32TR, BMP390 and AP2112K-3.3TRG1. By type, the board carries 16 resistors, 10 capacitors, 7 connectors, 5 ICs, 5 diodes and 1 transistor.

It belongs with the sensors, rf & radio and power & battery designs in this gallery.

From the project

Level 3 · stage 3 — design, build and test CC-FL1, an 80 × 30 mm printed circuit board that rides inside a 38 mm airframe and records a rocket flight at 100 samples per second: a Bosch BMP390 barometer, an ST LSM6DSO32 ±32 g inertial measurement unit (IMU), a microSD card, a Li-Po charger, a beeper and a header for the LoRa radio of experiment 31. The brain is a Raspberry Pi Pico soldered flat by its castellated edge, so there is no 0.4 mm-pitch microcontroller to solder. You get a complete KiCad project generated from one Python file, firmware with a Kalman filter and a flight state machine…

Main components on the Cosmic library

SC0915 MCP73831T-2ACI/OT LSM6DSO32TR BMP390 AP2112K-3.3TRG1

Cosmic library bill of materials (BOM)

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

Qty	Part	Footprint	Refs
1	SC0915 Raspberry Pi Pico Raspberry Pi Ltd	RaspberryPi_Pico_Castellated_HandSolder	U1
1	MCP73831T-2ACI/OT MCP73831-2-OT Microchip	SOT-23-5	U2
1	LSM6DSO32TR LSM6DSO32 STMicroelectronics	LGA-14_3x2.5mm_P0.5mm_LayoutBorder3x4y	U3
1	BMP390 Bosch Sensortec	Bosch_LGA-10_2x2mm_P0.5mm_BMP390	U4
1	AP2112K-3.3TRG1 AP2112K-3.3 Diodes Inc	SOT-23-5	U5
1	MMBT3904 Changjiang	SOT-23	Q1
1	USB4125-GF-A USB-C (power only) GCT	USB_C_Receptacle_GCT_USB4125-xx-x_6P_TopMnt_Horizontal	J1
1	B2B-PH-K-S(LF)(SN) LiPo 1S JST	JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical	J2
1	2.54 mm 1x02 SMD header PWR SW generic	PinHeader_1x02_P2.54mm_Vertical_SMD_Pin1Left	J3
1	DM3AT-SF-PEJM5 microSD Hirose	microSD_HC_Hirose_DM3AT-SF-PEJM5	J4
1	2.54 mm 1x08 SMD header RADIO (RFM95W) generic	PinHeader_1x08_P2.54mm_Vertical_SMD_Pin1Left	J5
1	2.54 mm 1x04 SMD header GPS UART generic	PinHeader_1x04_P2.54mm_Vertical_SMD_Pin1Left	J6
1	2.54 mm 1x02 SMD header EXT BEEPER generic	PinHeader_1x02_P2.54mm_Vertical_SMD_Pin1Left	J7
1	PKLCS1212E4001-R1 PKLCS1212E4001 Murata	Buzzer_Murata_PKLCS1212E	BZ1
2	SS14 MDD	D_SMA	D1, D2
1	KT-0805G GREEN Hubei KENTO	LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder	D3
1	1N4148W Changjiang	D_SOD-123	D4
1	KT-0805R RED Hubei KENTO	LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder	D5
2	CL21A475KAQNNNE 4.7uF Samsung	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C1, C2
1	CL21B105KAFNNNE 1uF Samsung	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C3

Show 7 more

Qty	Part	Footprint	Refs
2	CL21A106KAYNNNE 10uF Samsung	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C4, C9
5	CL21B104KBCNNNC 100nF Samsung	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C5, C6, C7, C10, C11
2	0805W8F5101T5E 5.1k UNI-ROYAL	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R1, R2
3	0805W8F4701T5E 4.7k UNI-ROYAL	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R3, R8, R9
4	0805W8F1001T5E 1k UNI-ROYAL	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R4, R5, R6, R7
3	0805W8F1003T5E 100k UNI-ROYAL	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R10, R11, R12
4	0805W8F1002T5E 10k UNI-ROYAL	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R13, R14, R15, R16

Cosmic library design files

The KiCad project lives in the Normansrule/cosmic-library repository on GitHub; these links point at the commit this page was built from.

Cosmic library: common questions

What microcontroller does the Cosmic library use?

The Cosmic library is built around the SC0915, from the RP2040/RP2350 family.

How big is the Cosmic library PCB?

The Cosmic library measures 80 × 30 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Cosmic library?

45 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 Cosmic library design files?

From the Normansrule/cosmic-library 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 Cosmic library design in my own project?

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

Can I test firmware for the Cosmic library 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.