PCB Design for Chicken Coop Ventilation
im trying to make a pcb (engraved machined copper) later for chicken coop ammonia ventilation. the core componets are dht22, mq135, and [Nano V3.0 Board ATMega328P Arduino Nano USB TYPE C Solder ATMega328 (just use normal atmega328 nano as model)], and 3-pin pc fan 120mm 12v 0.13a. i have extra parts: 12v1a power adaptor (barrel jack), lcd i2c 20x4, 5v buzzers (active and passive for loud and melodic tones). i have capasitors ([Capacitor 0.1 uF Kapasitor Tantalum 100NF 0.1UF 104 50V] x5, [Kapasitor Elco Capasitor 10 uF 10uF 50V] x6, [100nf 104 0.1uf 100 nf 0.1 uf 0,1uf 0,1 uf 100v MKM MKT MKP 100volt] 104j100 x2), resistors (4.7k for sda/scl pullup, 10k, 100 ohms), 1N4007 diode as fan flyback, IRLZ44N for fan pwm, and LM7805 as 12v to 5v (or we can use 12v DC-DC 12v+5v+3.3v multi voltage output converter). i bought from https://www.tokopedia.com/starlectric @web. if i need other parts ill try buy it
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Project
Great project idea! Let’s firm up the requirements so the schematic and PCB end up exactly how you need them. A few quick questions will help lock-in the architecture:
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Power strategy
- Do you want to keep everything fed from the 12 V adapter plus a small buck converter module (recommended for efficiency), or is the LM7805 linear regulator acceptable despite the heat it will dissipate?
- Any need for a 3.3 V rail (e.g. future I²C sensors)?
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Form-factor and mounting
- Approximate PCB size or shape target? (e.g. fit inside a small box on the coop wall, mount holes aligning to Arduino Nano headers, etc.)
- Do you want the Nano as an on-board module (soldered headers) or as a pluggable daughterboard so you can swap it out?
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Environmental protection
- The coop atmosphere can be humid and corrosive (ammonia). Will the board live in a sealed box with only sensor cables and fan wires coming out, or is conformal coating / other protection needed?
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Connectors and wiring
- For sensors and the fan, do you have a preferred connector type (Dupont, JST-XH, screw terminals) or should we pick low-cost JSTs?
- Will the I²C LCD stay on the same PCB or sit on panel wiring several centimeters away?
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User feedback & controls
- Besides the 20 x 4 LCD and buzzers, do you need buttons or status LEDs on the PCB?
- Any desire for future expansion headers (extra GPIO, UART for logging, etc.)?
Let me know your answers and I’ll suggest the detailed block diagram, parts list (including any little odds-and-ends such as gate resistors, pull-downs, and proper decoupling), and the next schematic steps.
Power selection
PCB dimensions
Enclosure and connectors
User controls
Block diagram tool
welche language code muss ich geben um die platine zu erstellen
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