【AUTO/WELD mode】CYBER SMART FAN：电子佬的科幻夏日桌搭

All of this started when I had a crazy impulse and bought a 12V 120mm×120mm case fan. I don’t even know why I bought it—I never even powered it on! I thought someday I’d make something cool with it. Well, that day came. I wanted to make a stylish fan! So I powered it on to test the airflow… and completely missed the "ultra-quiet" label on it. A 1000 RPM fan is indeed silent… but it had zero airflow. Not a whisper of wind. Frustrated, I went and bought a 2600 RPM PWM-controlled case fan instead. "I will make a mini fan!" ... Anyway, I did it! I call it the "CYBER SMART Fan," and it still carries that Summit Dynamics aesthetic. It includes an SFT-1 smart terminal: displays real-time mode/temperature/humidity/fan power. Two modes (toggle via the terminal’s tactile button): ​AUTO Mode: Default. Fan adjusts speed based on ambient temperature (off below 18°C, 100% power above 30°C). ​WELD Mode: For soldering. Locks at 95% power. Manually flip the fan (since reversing motor polarity isn’t supported, and rotating the frame isn’t DIY-friendly). Now it’s an exhaust fan—effectively pulls soldering fumes at 12cm! (Auto-reverts to AUTO after 30 mins; can be re-enabled.) Recreating this might be slightly tricky, but true tinkerers won’t be stumped—hahaha! Code: See ​​[Document 1: Code]​​ Wiring: See ​​[Document 2: Wiring]​​ ​Materials Needed: 12V 120×120mm PWM case fan (4-wire, ​strongly recommend 2600+ RPM—or you’ll be frustrated) 12V 3-output power module 4 × 6mm×2mm round magnets 0.96" OLED screen ESP32-C3 microcontroller DHT11 temp/humidity sensor 8050 transistor Tactile switch Female-to-female Dupont wires 220Ω resistor (for transistor base) 12V 1.5–2A power adapter ​What are you waiting for, makers? Get building!​ ———————————————————————————————————————————————————————————————— 这一切的一切都要从我有一天抽风买了一个12V-120mm*120mm机箱风扇说起 我也不知道为什么买，甚至我没有通过电~！ 我认为总有一天我能给他做个好东西 结果这一天来了，我想做个漂亮的风扇！ 然后就通电试试风力……好的我完全没注意他标签上的“超静音”几个字…1000转的风扇确实很静音……但是真的没有风···没有一点点风 然后我越想越气，就干脆买了个带PWM调速的2600转机箱风扇 “我非做一