2 layers83 × 123.5 mm
2 layers83 × 123.5 mm
Caeluspcb
n1vaan/caelusencoderpcbThis is a custom PCB we designed to streamline the control system for our liquid-fueled rocket tests. It combines signal encoding, ignition control, and ESP32-based automation into one board, letting us send multiple control signals through a single ethernet cable and run timed sequences automatically.
- Size
- 83 × 123.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 62
- Nets
- 114
- Pads
- 263
- Tracks, vias
- 385, 62
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 8 Nov 2025
- Updated
- 10 Nov 2025
Overview
Caeluspcb is an open-source printed circuit board by n1vaan, from the n1vaan/caelusencoderpcb repository on GitHub. It is a 2-layer board of 83 × 123.5 mm with 62 parts on 114 nets, routed with 385 tracks and 62 vias.
It is built around the HT12D, HT12E and L7805, with the RJ45, IRF540N and XT60-M among its other parts. Its parts include 38 resistors, 9 transistors, 6 ICs, 6 connectors and 2 diodes. It belongs with the ESP32 boards of this library.
Main components
6
HT12D
DIP-18-20℃~+75℃ 0.1uA 1.6mA 1.6mA 2.4V~12V Decoder DIP-18 Signal Switches, Multiplexers, Decoders ROHSHoltek SemiconSignal Switches / Encoders & Decoders / Multiplexers
HT12E
SOP-20-300mil- Lack of specifications ROHSHoltek SemiconUncategorised
L7805
TO-220ST0℃~+125℃@(Tj) 1 1.2A 20V 2V@(1A) 42uV 500uA 5V 73dB@(120Hz) Fixed Positive Short Circuit Protection TO-220ST Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSOSENVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
RJ45
TH-12PTH-12P SMT ROHSJLCPCB AssemblyUncategorised
IRF540N
TO-2201 N-channel 1.35nF 100V 130W 280pF 33A 35mΩ@10V 4V 52nC@10V 85pF N-Channel TO-220 MOSFETs ROHSOSENMOSFETsXT60-M
THrough holeTHroughhole New Arrivals ROHSChangzhou Amass ElecUncategorised
README
README.mdProject Caelus Encoder PCB
This is a custom PCB we designed to streamline the control system for our liquid-fueled rocket tests. It combines signal encoding, ignition control, and ESP32-based automation into one board, letting us send multiple control signals through a single ethernet cable and run timed sequences automatically.
Parts
62| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R4, R5, R8, R11, R13, R21, R24, R27, R33, R35 |
| 11 | 330 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3, R6, R9, R12, R22, R25, R28, R34, R36, R37, R38 |
| 11 | 50 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2, R7, R10, R14, R15, R16, R26, R29, R30, R31, R32 |
| 8 | NPN | Package_TO_SOT_THT:TO-92 | Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9 |
| 5 | R_US | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R17, R18, R19, R20, R23 |
| 4 | RJ45 | Connector_RJ:RJ45_Amphenol_54602-x08_Horizontal | J1, J2, J3, J4 |
| 2 | HT12D | Package_DIP:CERDIP-18_W7.62mm_SideBrazed | U1, U5 |
| 2 | HT12E | Package_DIP:CERDIP-18_W7.62mm_SideBrazed | U2, U3 |
| 2 | LED | LED_THT:LED_D3.0mm | D1, D2 |
| 1 | ESP32-DEVKIT-V1 | Launchbox:MODULE_ESP32_DEVKIT_V1 | U4 |
| 1 | IRF540N | Package_TO_SOT_THT:TO-220-3_Vertical | Q1 |
| 1 | L7805 | Package_TO_SOT_THT:TO-220-3_Vertical | U6 |
| 1 | SW_SPDT | Launchbox:SPDT_Slide_Switch | SW1 |
| 1 | XT60-M | Connector_JST:JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical | J5 |
| 1 | XT60-M | Connector_AMASS:AMASS_XT60-M_1x02_P7.20mm_Vertical | J6 |
Questions
How big is the Caeluspcb PCB?
It measures 83 × 123.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Caeluspcb use?
62 parts, built around the HT12D, HT12E, L7805 and RJ45. 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 Caeluspcb KiCad files?
From the n1vaan/caelusencoderpcb repository on GitHub, at the commit this page was made from: the board is EncoderPCB/caeluspcb.kicad_pcb and its schematic EncoderPCB/caeluspcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Caeluspcb design in my own project?
Its repository states no licence, so its author keeps all rights: ask n1vaan before reusing the design.
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