CJ4-Autopilot

neilenns·CJ4-Autopilot

About the CJ4-Autopilot PCB

CJ4-Autopilot is an open source RP2040/RP2350 PCB design by neilenns, published on GitHub under the MIT license. It is a 2-layer board measuring 317.5 × 57.2 mm, with 70 components from 42 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the TLC5917IN, AMS1117-3.3, 74HC165 and W25Q128JVS. By type, the board carries 20 capacitors, 16 switches, 11 resistors, 7 ICs, 7 connectors and 1 crystal.

From the project

Autopilot panel for the CJ4 in MSFS2020

This repository provides a ready-to-go CI/CD workflow for KiCad 6 with GitHub actions. Using KiCad5? See my other repo.

1. Integration with GitHub releases to automatically produce documentation and fabrication files on every GitHub release, including automatic date and version stamping of schematics and PCBs. 2. KiBot preflighting on every pull request (ERC/DRC checks disabled by default). 3. VSCode dev container and default build task for easy local testing of KiBot scripts.

CJ4-Autopilot, from the project README — From the project README

Main components on the CJ4-Autopilot

TLC5917IN AMS1117-3.3 74HC165 W25Q128JVS RP2040

CJ4-Autopilot bill of materials (BOM)

70 components, 42 distinct parts.

Qty	Part	Footprint	Refs
2	TLC5917IN	SOIC-16_3.9x9.9mm_P1.27mm	U1, U3
1	AMS1117-3.3	SOT-223-3_TabPin2	U2
2	74HC165	SOIC-16_3.9x9.9mm_P1.27mm	U4, U5
1	W25Q128JVS	SOIC-8_5.23x5.23mm_P1.27mm	U6
1	RP2040	RP2040-QFN-56	U7
1	X322512MSB4SI	Crystal_SMD_3225-4Pin_3.2x2.5mm	Y1
2	CRS encoder	JST_XH_B5B-XH-A_1x05_P2.50mm_Vertical	J1, J5
1	FLC encoder	JST_XH_B5B-XH-A_1x05_P2.50mm_Vertical	J2
1	HDG encoder	JST_XH_B5B-XH-A_1x05_P2.50mm_Vertical	J3
1	ALT encoder	JST_XH_B5B-XH-A_1x05_P2.50mm_Vertical	J4
1	USB_B_Micro	USB_B_Mini_Amphenol_UE25BE5510H	J6
1	Conn_01x02	PinHeader_1x02_P2.54mm_Vertical	J7
1	CRS1 encoder	EN11-HSM1BF20 panel mount	H5
1	FLC encoder	EN11-HSM1BF20 panel mount	H6
1	HDG encoder	EN11-HSM1BF20 panel mount	H7
1	ALT encoder	EN11-HSM1BF20 panel mount	H8
1	CRS2 encoder	EN11-HSM1BF20 panel mount	H9
3	MountingHole	JLCPCB_Tooling_Hole	H12, H13, H14
1	FD1	SW_PUSH_6mm	SW1
1	VS	SW_PUSH_6mm	SW2

Show 22 more

Qty	Part	Footprint	Refs
1	VNAV	SW_PUSH_6mm	SW3
1	FLC	SW_PUSH_6mm	SW4
1	NAV	SW_PUSH_6mm	SW5
1	BANK	SW_PUSH_6mm	SW6
1	HDG	SW_PUSH_6mm	SW7
1	APPR	SW_PUSH_6mm	SW8
1	BC	SW_PUSH_6mm	SW9
1	ALT	SW_PUSH_6mm	SW10
1	YD	SW_PUSH_6mm	SW11
1	XFR	SW_PUSH_6mm	SW12
1	AP	SW_PUSH_6mm	SW13
1	FD2	SW_PUSH_6mm	SW14
1	DISC	SW_PUSH_6mm	SW15
1	VS encoder	EN11-VNB1BQ15	SW16
6	10uF	C_0603_1608Metric	C1, C2, C3, C4, C7, C9
2	20pF	Perfect_0402	C5, C6
10	100nF	Perfect_0402	C8, C10, C11, C13, C15, C16, C17, C18 +2
2	1uF	Perfect_0402	C12, C14
4	1k	Perfect_0402	R1, R2, R3, R4
1	DNF	R_1206_3216Metric_Pad1.30x1.75mm_HandSolder	R5
2	27	R_0603_1608Metric	R6, R7
4	10k	R_Array_Convex_4x0603	RN1, RN2, RN3, RN4

CJ4-Autopilot design files

The KiCad project lives in the neilenns/CJ4-Autopilot repository on GitHub; these links point at the commit this page was built from.

LayoutCJ4-Autopilot.kicad_pcb
SchematicCJ4-Autopilot.kicad_sch

CJ4-Autopilot: common questions

What microcontroller does the CJ4-Autopilot use?

The CJ4-Autopilot is built around the RP2040, from the RP2040/RP2350 family.

How big is the CJ4-Autopilot PCB?

The CJ4-Autopilot measures 317.5 × 57.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the CJ4-Autopilot?

70 components, from 42 distinct parts. The full bill of materials is listed on this page.

Where can I download the CJ4-Autopilot design files?

From the neilenns/CJ4-Autopilot repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the CJ4-Autopilot design in my own project?

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

Can I test firmware for the CJ4-Autopilot 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.