Air Blower

Air blower uses a powerfull 132cfm biscuit fan to direct a strong air stream.

This is a work in progress

I plan to design an enclosure for the electronics.

I will add additional details on the wiring of the PWM board to control the speed.

This project does not require a speed controller. It is just an option. If you use a two or three wire fan you can just attach it to a dc power adapter and it will run at full speed. If you using a three wire fan you can leave the third wire un attached.

If you choose to use a 4 wire fan you can attache the 4th wire to a inexpensive pwm controller to vary the speed. A 4 wire fans speed is controlled by the pulse width IE duty cycle of a pwm source. In that way it is similar to an rc servo. The frequency of the signal does not control the speed.

In the shown prototype I am using a full size potentiometer and knob for convenience. To do so you will have to remove the tiny potentometer from the circuit board and wire it to the full size unit. You only need to attach three wires to the board, +12, gnd, and signal out.

The potentiometer on the prototype also has a switch on the back which is in series to the 12 volt supply so you can completely turn off the circuit.

Parts:
6mm Square Nuts https://www.amazon.com/Swpeet-150Pcs-Stainless-Assortment-Machine/dp/B07W6TVD59/ref=as_li_ss_tl?_encoding=UTF8&pd_rd_i=B07W6TVD59&pd_rd_r=84b48be5-7e07-4955-b473-57a9a5ba6685&pd_rd_w=yXD1L&pd_rd_wg=70r7F&pf_rd_p=bdc9de6d-7dc6-4c7d-ab74-b8f569483e2b&pf_rd_r=NRK4M9M801B0DWAXGSS5&psc=1&refRID=NRK4M9M801B0DWAXGSS5&linkCode=sl1&tag=jbanion-20&linkId=a11c6375114be7d439130855b9570632&language=en_US

6mm Thumb Screws https://www.amazon.com/Swpeet-150Pcs-Stainless-Assortment-Machine/dp/B07W6TVD59/ref=as_li_ss_tl?_encoding=UTF8&pd_rd_i=B07W6TVD59&pd_rd_r=84b48be5-7e07-4955-b473-57a9a5ba6685&pd_rd_w=yXD1L&pd_rd_wg=70r7F&pf_rd_p=bdc9de6d-7dc6-4c7d-ab74-b8f569483e2b&pf_rd_r=NRK4M9M801B0DWAXGSS5&psc=1&refRID=NRK4M9M801B0DWAXGSS5&linkCode=sl1&tag=jbanion-20&linkId=a11c6375114be7d439130855b9570632&language=en_US

PWM Controler board https://www.amazon.com/Swpeet-150Pcs-Stainless-Assortment-Machine/dp/B07W6TVD59/ref=as_li_ss_tl?_encoding=UTF8&pd_rd_i=B07W6TVD59&pd_rd_r=84b48be5-7e07-4955-b473-57a9a5ba6685&pd_rd_w=yXD1L&pd_rd_wg=70r7F&pf_rd_p=bdc9de6d-7dc6-4c7d-ab74-b8f569483e2b&pf_rd_r=NRK4M9M801B0DWAXGSS5&psc=1&refRID=NRK4M9M801B0DWAXGSS5&linkCode=sl1&tag=jbanion-20&linkId=a11c6375114be7d439130855b9570632&language=en_US

Your Support Appreciated:
If you like my designs why not tip me a dollar or two. Your support will allow me to spend more time on these designs and their variations. Other ways to help: Purchase some parts from one of my amazon links. I will get a small advertising fee at no cost to you. Or try Amazon Prime free for 30 days:
https://www.amazon.com/Swpeet-150Pcs-Stainless-Assortment-Machine/dp/B07W6TVD59/ref=as_li_ss_tl?_encoding=UTF8&pd_rd_i=B07W6TVD59&pd_rd_r=84b48be5-7e07-4955-b473-57a9a5ba6685&pd_rd_w=yXD1L&pd_rd_wg=70r7F&pf_rd_p=bdc9de6d-7dc6-4c7d-ab74-b8f569483e2b&pf_rd_r=NRK4M9M801B0DWAXGSS5&psc=1&refRID=NRK4M9M801B0DWAXGSS5&linkCode=sl1&tag=jbanion-20&linkId=a11c6375114be7d439130855b9570632&language=en_US
.

Thanks