DIY ac unit

I made this mini ac unit! It is around 30 cm wide. but still….. it works! I used 2 sg90's servo's with a arduino uno! For the fan is used a noctua nf-a9 5v with a usb to fan connector and a usb step up converter from 5 to 12 volts. The fan handles the 12 volts like a charm! I included print files! I will later make a v2 with the option to attach peltier modules! It costed around 600 grams of filament.  I also made a control box for the arduino to control the servo's. For the servo's i used the breadboard pack from AZdelivery with a breadboard power supply. I used a 9v battery to power the breadboard, because the arduino doesn't have enough power output to power the servo's. I will leave the links down here. I used 5mm magnets to attach the arduino holder to the baseplate.

I also included the code for the servo's!

(WARNING: WATCH THE POSITIVE AND NEGATIVE ON THE BREADBOARD AND THE POWER SUPPLY VERY VERY CLOSELY!!!!! OTHERWISE YOU WILL SHORT YOUR COMPONENTS!!!)

Links:

fan:

https://www.amazon.nl/Noctua-NF-A9-PWM-Hoogwaardige-5V-uitvoering/dp/B07DXTN515/ref=sr_1_1_sspa?__mk_nl_NL=%C3%85M%C3%85%C5%BD%C3%95%C3%91&crid=2CE9YJZ7AQGAZ&dib=eyJ2IjoiMSJ9.lR8sVZ7-0Kteu1r-spTvulVbHzIHnhT1LSD7O0_baHg47sl9BN6H-nAS9Fdw2ZyKrL4hWYZn71LveTjb8nkzQlWdkWTFzI9tapJuN53IDX7q_eGMqCfbvB7TzZDoVjhZBsNOjc_mCEDH-Y7Wk5_SAbIljWyx6XFnbo0cJJXkTGybYioRgYSUhyEERzyFs0NnbeO5UMgwsDCwEGJTY-TB2MgC76lE6g_n7x9UsjOGduBYwmNHI01h2bR18prms9V0eCIu8aJvECPU8ZRZHoo3-FEasIFTsVHZ06JGMUmPH7U.wKN9QG4Up6XGYaVqNZDc9VMw7YZwZSYiWkwdd5yXugQ&dib_tag=se&keywords=noctua+nf-a9+5v&qid=1737640518&sprefix=noctua+nf-a9+5v%2Caps%2C164&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1

Usb to fan connector:

https://www.amazon.nl/JSGHGDF-mannelijk-3-pins-Adapter-Connector/dp/B0DHGPH1C2/ref=sr_1_6?__mk_nl_NL=%C3%85M%C3%85%C5%BD%C3%95%C3%91&crid=12O6HGM9BFDF5&dib=eyJ2IjoiMSJ9.5y_mKjP7bV4puJTNf1CjGIeU1TLhuTqHrzHU3mWSsJ77IoeB1h4rUDdaY7bN7r84nCd54By9A0hO4Px_Eud5rhlLNxUyCUo7_y8LdWEOU9Ho8KmJCmLoyMNduswqAuaFY9GjAvEdSJt5-aMCLy1AqfS06NGCbFVMhA9zR3yUQf63MEiWV5poXz74D1o9yp_nCvOkdXsLvKgzj0oCjvyz2Rs1ueqQToeJDUzbG3ZxMeArEI_j3oimVz-O1Py2vgzF1FWGfK99ae0SFvJEVr92xdezqKrPomz5yvK8K79kh7yPFMKm6j4WFbQ6KkLZ92hLlHG5R-ti1VGUOcclBNJVlmq3eK16n0AEhhwe-N2qmcV9APLN6nH5ohNC2tgB6gbD_cdIQFHaWBO4UArk7dREVF1sRTSqbpZTnNPp0w3hm8cIpB8lufxZ9RZcCN9NL3hb.SUjf4I9mU6LU-LPGvLCjhRGWOPAb-vd5cCPDT8F1kA8&dib_tag=se&keywords=usb+to+fan+connector&qid=1737640573&sprefix=usb+to+fan+connector%2Caps%2C151&sr=8-6

5 to 12 volts converter:

https://www.amazon.nl/USB-ventilator-snelheidsregelaars-Snelheidsmodule-Snelheidsregelaar-Windsnelheidsregelaar/dp/B07ZFJDJHW/ref=sr_1_1?__mk_nl_NL=%C3%85M%C3%85%C5%BD%C3%95%C3%91&crid=2X0BDBLIXE8M4&dib=eyJ2IjoiMSJ9.jeLETXNoUGkQmHs7Ap3rCkt09ew-COXIRE-v5I-A2s_4_LJEqG4AcDSQMi1SdZfyN81GZ2HcyYHf5mes0ELRdP8aorW2OLeuA56_lOrFaDeB3gi-xoRNtbANptm9F284xLkskBbYr7TcTAlYfxFSom1lI7j-nLpW3uVx7LvB9HZiJ3ZCjo0vd1aUa4Fhz7Xp2NsN6wrra2OGS2P3fveYHCFC4gOz98fS0p67LEcwXJ8MOBZJXliPy27suOIpCNpdnapRfG7GPkclaNbj75MmgFftF5F7Wg_V9WmpDqIlWBU.2hRVEcTbcWNcF9A7AGKrN2Mk4PL_cPhcAP8GKXhmFGA&dib_tag=se&keywords=usb+potentiometer&qid=1737640610&sprefix=usb+potentiometer%2Caps%2C128&sr=8-1

Arduino uno: 

https://www.az-delivery.de/en/products/mcu-mit-atmega328p-und-usb-kabel

breadboard starter kit: 

https://www.az-delivery.de/en/products/mb-102-breadboard-kit

servo's:

https://www.az-delivery.de/en/products/az-delivery-micro-servo-sg90?variant=12236811731040 (i recommend the 3-pack)

9v to barrel jack for the breadboard power supply:

https://www.az-delivery.de/en/products/batterie-clips-mit-15cm-anschlusskabel-fuer-9v-block