2 layers16 × 30 mm
2 layers49.5 × 34.5 mm
Fog mcu interface
aidtopia/hauntcontrol1Controlling Halloween props with Arduino
- Size
- 49.5 × 34.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 15
- Nets
- 14
- Pads
- 56
- Tracks, vias
- 88, 0
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 30 Mar 2021
- Updated
- 10 Aug 2026
Overview
Fog mcu interface is an open-source printed circuit board by aidtopia, from the aidtopia/hauntcontrol repository on GitHub. It is a 2-layer board of 49.5 × 34.5 mm with 15 parts on 14 nets, routed with 88 tracks and 0 vias.
It is built around the 74HC86D, LTV-817 and LTV-824. Its parts include 6 resistors, 3 ICs, 2 capacitors, 2 connectors and 1 diode. It belongs with the interfaces and adapters boards of this library.
Main components
3
74HC86D
SO-14-40℃~+125℃ 1.5V~4.2V 20ns@6V,50pF 2V~6V 2uA 4 5.2mA 5.2mA 500mV~1.8V 74HC Series XOR Gate SOIC-14 Logic Gates ROHSNexperiaLogic Gates
LTV-817
DIP-4-55℃~+110℃ 1 1.2V 100mV@20mA,1mA 200mW 35V 3us 4us 50% 50mA 50mA 5kV 600% 6V DC Phototransistor DIP-4 Transistor, Photovoltaic Output Optoisolators ROHSLite-OnTransistor, Photovoltaic Output Optoisolators
LTV-824
DIP-8-30℃~+100℃ 1.2V 100mV@20mA,1mA 2 20% 200mW 300% 35V 3us 4us 50mA 50mA 5kV AC,DC Phototransistor DIP-8 Transistor, Photovoltaic Output Optoisolators ROHSLite-OnTransistor, Photovoltaic Output Optoisolators
Parts
15| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 10K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5, R6 |
| 2 | 1uF | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C1, C2 |
| 2 | 6K2 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3, R4 |
| 1 | 100K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | 1N4001 | Diode_THT:D_DO-41_SOD81_P7.62mm_Horizontal | D1 |
| 1 | 200 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2 |
| 1 | 74HC86 | Package_DIP:DIP-14_W7.62mm | U3 |
| 1 | Conn_01x04_Male | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J1 |
| 1 | G5LE-1 | Relay_THT:Relay_SPDT_Omron-G5LE-1 | K1 |
| 1 | LTV-817 | Package_DIP:DIP-4_W7.62mm | U1 |
| 1 | LTV-824 | Package_DIP:DIP-8_W7.62mm | U2 |
| 1 | Screw_Terminal_01x03 | Connector_Phoenix_MSTB:PhoenixContact_MSTBA_2,5_3-G-5,08_1x03_P5.08mm_Horizontal | J2 |
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Questions
How big is the Fog mcu interface PCB?
It measures 49.5 × 34.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Fog mcu interface use?
15 parts, built around the 74HC86D, LTV-817 and LTV-824. 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 Fog mcu interface KiCad files?
From the aidtopia/hauntcontrol repository on GitHub, at the commit this page was made from: the board is schematics/fog_mcu_interface/fog_mcu_interface.kicad_pcb and its schematic schematics/coffin_knocker/coffin_knocker.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Fog mcu interface design in my own project?
Its repository states no licence, so its author keeps all rights: ask aidtopia before reusing the design.