2 layers80 × 165 mm
Calculator
Ethan-Poag/Flight-Data-Computer
An easy to build open source alternative to the ASA CX-3 aviation data computer.
83 parts3GPL-3.0
2 layers86 × 165 mm
Calculator
Ethan-Poag/Flight-Data-Computer3An easy to build open source alternative to the ASA CX-3 aviation data computer.
- Size
- 86 × 165 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 131
- Nets
- 133
- Pads
- 532
- Tracks, vias
- 899, 127
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 3 Nov 2022
- Updated
- 2 Jan 2023
Overview
Calculator is an open-source printed circuit board by Ethan-Poag, from the Ethan-Poag/Flight-Data-Computer repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 86 × 165 mm with 131 parts on 133 nets, routed with 899 tracks and 127 vias.
It is built around the MCP73831T-2ACI/OT-HXY, TCA8418RTW and 1N4148WT, with the BSS138, DMG3415U and MBR540DS among its other parts. Its parts include 37 diodes, 37 switches, 19 capacitors, 19 resistors and 7 ICs. It belongs with the ESP32 and RISC-V boards of this library.
Main components
7
MCP73831T-2ACI/OT-HXY
SOT-23-5LBattery ManagementHXY MOSFET
TCA8418RTW
WQFN-24-EP(4x4)-40℃~+85℃ 1.65V~3.6V 18 1MHz I2C Input anti-jitter、Keyboard matrix scanning Interrupt Output Open-drain WQFN-24-EP(4x4) I/O Expanders ROHSTexas InstrumentsI/O Expanders
1N4148WT
SOD-523-55℃~+150℃ 1.25V@150mA 100V 150mA 150mW 1uA@75V 2A 4ns Independent SOD-523 Switching Diodes ROHShongjiachengSwitching Diodes
BSS138
SOT-23-55℃~+150℃ 1 N-channel 1.1Ω@10V、1.2Ω@4.5V 1.2V 1.7nC@10V 17.5pF 340mA 350mW 50V 6.5pF N-Channel SOT-23 MOSFETs ROHShongjiachengMOSFETsDMG3415U
SOT-23MOSFETsTECH PUBLIC
MBR540DS
TO-252-21 Independent 100uA@40V 40V 5A 650mV@5A TO-252-2 Schottky Diodes ROHSShandong Jingdao MicroelectronicsSchottky Barrier Diodes (SBD)SI2302
SOT-23-55℃~+150℃ 1 N-channel 120pF 1V 1W 20V 300pF 3A 4nC@4.5V 65mΩ@2.5V 80pF N-Channel SOT-23 MOSFETs ROHSYONGYUTAIMOSFETs
README
README.mdFlight-Data-Computer
An easy to build open source alternative to the ASA CX-3 aviation data computer.
Parts
131| Qty | Value | Footprint | References |
|---|---|---|---|
| 35 | 1N4148WT | Diode_SMD:D_SOD-523 | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +19 |
| 35 | SW_Push | Custom:SW_TS-1187A-B-A-B | SW1, SW2, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23 +19 |
| 10 | 10uF | Adafruit ESP32 Feather V2:0805-NO | C1, C2, C3, C5, C6, C15, C16, C17, C18, C19 |
| 4 | 10K | Adafruit ESP32 Feather V2:0603-NO | R13, R16, R18, R19 |
| 4 | 1uF | Adafruit ESP32 Feather V2:0805-NO | C4, C8, C13, C14 |
| 4 | 5.1K | Adafruit ESP32 Feather V2:0603-NO | R5, R6, R11, R12 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_Pad_Via | H1, H2, H3, H4 |
| 3 | 10uF | Adafruit TCA8418:0805-NO | C10, C11, C12 |
| 2 | 0.1uF | Adafruit ESP32 Feather V2:0805-NO | C7, C9 |
| 2 | 100K | Adafruit ESP32 Feather V2:0603-NO | R3, R4 |
| 2 | 10K | Adafruit TCA8418:0603-NO | R9, R10 |
| 2 | 200K | Adafruit ESP32 Feather V2:0603-NO | R14, R15 |
| 2 | AP2112-3.3 | Adafruit ESP32 Feather V2:SOT23-5 | U1, U3 |
| 2 | R_Small_US | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 1 | 10K Pack | Adafruit TCA8418:RESPACK_4X0603 | R8 |
| 1 | 3.5_SPI_TFT_LCD_RAW_DISPLAY | Custom:3.5_SPI_TFT_LCD_RAW_DISPLAY | U5 |
| 1 | 4.7 | Adafruit ESP32 Feather V2:0805-NO | R17 |
| 1 | 47K | Adafruit ESP32 Feather V2:RESPACK_4X0603 | R7 |
| 1 | AP2127K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | BSS138 | Adafruit TCA8418:SOT363 | Q3 |
| 1 | CP2102N-24 | Adafruit ESP32 Feather V2:QFN24_4MM_SMSC | IC1 |
| 1 | DMG3415U | Adafruit ESP32 Feather V2:SOT23-R | Q1 |
| 1 | DUAL NPN | Adafruit ESP32 Feather V2:SOT363 | Q4 |
| 1 | ESP32-PICO-MINI-02MINI | Adafruit ESP32 Feather V2:ESP32-PICO-MINI | X2 |
| 1 | KMR2 | Adafruit ESP32 Feather V2:BTN_KMR2_4.6X2.8 | SW37 |
| 1 | LOGO | LOGO | G*** |
| 1 | MBR540 | Adafruit ESP32 Feather V2:SOD-123 | D36 |
| 1 | MCP73831T-2ACI/OT | Adafruit ESP32 Feather V2:SOT23-5 | U4 |
| 1 | ORANGE | Adafruit ESP32 Feather V2:CHIPLED_0603_NOOUTLINE | D37 |
| 1 | SI2302 | Custom:SOT23 | Q2 |
| 1 | TCA8418 | Adafruit TCA8418:QFN24_4MM_SMSC | IC2 |
| 1 | TestPoint_2Pole | Custom:Battery Solder Pad | TP1 |
| 1 | Toggle_Switch | Connector:FanPinHeader_1x03_P2.54mm_Vertical | SW36 |
| 1 | USB_C | Adafruit ESP32 Feather V2:USB_C_CUSB31-CFM2AX-01-X | X1 |
More from Ethan-Poag/Flight-Data-Computer
1Similar boards
- 2 layers50.8 × 22.9 mm
Adafruit adafruit esp32 s2 tft feather pcb adafruit esp32 s2 tft feather
oomlout/oomlout_oomp_project_bot_v_2
56 parts - 2 layers50.8 × 22.9 mm
Adafruit ESP32 Feather V2
cgallizzi/inkterface
Steam Machine e-ink faceplate with a Now Playing mode: box art, playtime, achievements. Fork of Valve's Inkterface.
56 parts12MIT - 2 layers290 × 100 mm
ESP32-Wall Clock
SkullKill/ESP32-Wall-Clock-PCB
ESP32 based 30cm Wall Mounted Clock. WiFi, NTP, SNMP, web interface, MicroUsb, Type-C, HG3613 Retrofit
207 parts3GPL-3.0 - 2 layers
- 2 layers52.5 × 37 mm
5A Buck Converter
akshat-kumar10/5A-Buck-Converter
A custom 5A DC-DC buck converter and motor driver PCB designed in KiCad.
10 partsMIT - 2 layers61 × 28 mm
- 4 layers100 × 100 mm
V25Panel
maholli/SAM32
Feather-sized SAMD51 with M4 core serving as UART bridge to WROOM ESP32
211 parts43 - 2 layers22.9 × 63.5 mm
Esp rust board
swayerloren/KICAD_ENGINE
AI-assisted KiCad PCB design workflow for schematics, PCB layouts, DRC, BOM/CPL, and fabrication outputs using Codex or Claude.
96 parts10MIT
Questions
How big is the Calculator PCB?
It measures 86 × 165 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Calculator use?
131 parts, built around the MCP73831T-2ACI/OT-HXY, TCA8418RTW, 1N4148WT and BSS138. 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 Calculator KiCad files?
From the Ethan-Poag/Flight-Data-Computer repository on GitHub, at the commit this page was made from: the board is Calculator_PCB_V3/Calculator.kicad_pcb and its schematic Calculator_PCB_V3/Calculator.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Calculator design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).