

CJ4-Electrical Panel
CJ4 electrical panel PCB for use with MobiFlight
- Size
- 122.4 × 62.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 43
- Nets
- 40
- Pads
- 141
- Tracks, vias
- 196, 31
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 6 Feb 2022
- Updated
- 25 Feb 2025
Overview
CJ4-Electrical Panel is an open-source printed circuit board by neilenns, from the neilenns/CJ4-Electrical-Panel repository on GitHub, published under the MIT licence. It is a 2-layer board of 122.4 × 62.5 mm with 43 parts on 40 nets, routed with 196 tracks and 31 vias.
It is built around the ATMEGA32U4-AU. Its parts include 12 capacitors, 8 connectors, 5 resistors, 2 diodes and 1 IC. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
1README
README.mdCJ4 electrical panel for use with MobiFlight
Parts
43| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 100nF | CJ4-Electrical-Panel:Perfect_0402 | C4, C5, C8, C9, C11, C12 |
| 6 | Conn_01x03 | Connector_JST:JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical | J1, J2, J3, J4, J5, J6 |
| 6 | MountingHole | CJ4-Electrical-Panel:MiniToggleSPDT_screw_mount | H8, H9, H10, H11, H12, H13 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 3 | MountingHole | CJ4-Electrical-Panel:JLCPCB_Tooling_Hole | H5, H6, H7 |
| 2 | 10k | CJ4-Electrical-Panel:Perfect_0402 | R1, R5 |
| 2 | 10uF | CJ4-Electrical-Panel:Perfect_0402 | C2, C10 |
| 2 | 1uF | CJ4-Electrical-Panel:Perfect_0402 | C1, C3 |
| 2 | 20pF | CJ4-Electrical-Panel:Perfect_0402 | C6, C7 |
| 2 | 22 | CJ4-Electrical-Panel:Perfect_0402 | R2, R3 |
| 1 | 16MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | 1k | CJ4-Electrical-Panel:Perfect_0402 | R4 |
| 1 | ATmega32U4-A | Package_QFP:TQFP-44_10x10mm_P0.8mm | U1 |
| 1 | AVR-ISP-6 | Connector:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_Vertical | J8 |
| 1 | D_Small | Diode_SMD:D_SOD-323F | D1 |
| 1 | FerriteBead_Small | Capacitor_SMD:C_0805_2012Metric | FB1 |
| 1 | GREEN | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D2 |
| 1 | USB_B_Mini | CJ4-Electrical-Panel:USB_B_Mini_Amphenol_UE25BE5510H | J7 |
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Questions
How big is the CJ4-Electrical Panel PCB?
It measures 122.4 × 62.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the CJ4-Electrical Panel use?
43 parts, built around the ATMEGA32U4-AU. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the CJ4-Electrical Panel KiCad files?
From the neilenns/CJ4-Electrical-Panel repository on GitHub, at the commit this page was made from: the board is CJ4-Electrical-Panel.kicad_pcb and its schematic CJ4-Electrical-Panel.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the CJ4-Electrical Panel design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).