# 18V BLDC Blower Controller c816 ## Description 18 V battery-powered BLDC blower control board using an Arduino Nano, LM2596 5 V buck module, P-channel MOSFET power cutoff, battery voltage sensing, potentiometer input, buzzer, and red/green status LEDs. High-current 18 V blower path is sized for up to 5 A. ## Project Details - **Owner:** tehvofka - **Created:** 7/21/2026 - **Last Updated:** 7/21/2026 - **Visibility:** Public ## Key Components ### BZ1 — [HNB09A05](https://www.flux.ai/adrian95/hnb09a05~z5g.md) - Manufacturer Name: Huaneng - Datasheet URL: https://lcsc.com/datasheet/lcsc_datasheet_2411281353_Huaneng-HNB09A05_C96493.pdf - Part Type: Buzzer - Manufacturer Part Number: HNB09A05 - Role: Audible Indicator - Role Details: 5 V active buzzer switched by Q3 from Arduino D6 - Voltage: 5V - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - - [pin 2] - + [pin 1] ### D1 — [1N5242BTR](https://www.flux.ai/adrian95/1n5242btr~e4r.md) - Manufacturer Part Number: 1N5242BTR - License: https://creativecommons.org/licenses/by/4.0/ - Role: Protection - Role Details: 12 V gate-source zener clamp for IRF4905 Vgs protection - Part Type: Diode - Datasheet URL: https://www.onsemi.com/pdf/datasheet/1n5221b-d.pdf - Manufacturer Name: onsemi **Pins:** - A [pin 2] - C [pin 1] ### D14 — [P6KE20CA](https://www.flux.ai/adrian95/p6ke20ca~ylg.md) - Role Details: Input TVS across BAT_18V and GND for 18 V Makita battery, 21 V max charged - Part Type: Diode - Datasheet URL: https://www.littelfuse.com/media?resourcetype=datasheets&itemid=620a3cb5-3282-4670-8b03-66f21bc75523&filename=littelfuse_tvs_diode_p6ke_datasheet.pdf - Manufacturer Part Number: P6KE20CA - Manufacturer Name: Littelfuse Inc. - Role: Protection - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - A [pin 2] - K [pin 1] ### D15 — [SB560-T](https://www.flux.ai/adrian95/sb560-t~yfc.md) - Role: Flyback / Freewheeling - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Diode - Datasheet URL: https://www.diodes.com/assets/Datasheets/ds23024.pdf - Role Details: Compact DO-201AD 5 A flyback diode; cathode to SWITCHED_18V and anode to GND - Manufacturer Name: Vishay General Semiconductor - Diodes Division - Manufacturer Part Number: SB560-T **Pins:** - A [pin 2] - K [pin 1] ### F1 — [Fuseholder Cylinder 5x20mm](https://www.flux.ai/adrian95/fuseholder-cylinder-5x20mm~02p.md) - Role Details: Onboard 5x20 mm glass fuse holder in series with 18 V battery input; holder rated 16 A / 500 V - Current Rating: 10A - Part Type: Fuse - Role: Protection **Pins:** - P1 - P2 ### J1 — [XY301V-A-5.0-2P](https://www.flux.ai/jharwinbarrozo/xy301v-a-50-2p~u6.md) - Part Type: Connector - Role: Power Input - Manufacturer Name: Ningbo Xinlaiya Elec. - Role Details: 18 V battery input, 5 A blower path - Datasheet URL: https://www.lcsc.com/datasheet/C557651.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=E1BYV1AHFgUMXgFVQ1AMU1JVQFReXgIATwJfA10DFVkxVlNRT1dXXlVTQ1hbUjsOAxUeFF5JWBYZEEoBGA4JCwFIFA4DSA%3D%3D - Manufacturer Part Number: XY301V-A-5.0-2P - Current Rating: 15A **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] ### J2 — [XY301V-A-5.0-2P](https://www.flux.ai/jharwinbarrozo/xy301v-a-50-2p~u6.md) - Current Rating: 15A - Role Details: Switched 18 V output to BLDC blower, 5 A max - Part Type: Connector - Datasheet URL: https://www.lcsc.com/datasheet/C557651.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=E1BYV1AHFgUMXgFVQ1AMU1JVQFReXgIATwJfA10DFVkxVlNRT1dXXlVTQ1hbUjsOAxUeFF5JWBYZEEoBGA4JCwFIFA4DSA%3D%3D - Manufacturer Part Number: XY301V-A-5.0-2P - Manufacturer Name: Ningbo Xinlaiya Elec. - Role: Power Output **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] ### LED1 — [LTL-307EE](https://www.flux.ai/vasy_skral/ltl-307ee~a2.md) - Manufacturer Part Number: LTL-307EE - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Lite-On Inc. - Role Details: Red status LED driven from Arduino D4 via 220 ohm resistor; through-hole radial package - Role: Indicator - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/1153/LTL-307EE.pdf - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### LED2 — [151031VS06000](https://www.flux.ai/adrian95/151031vs06000~t3a.md) - Role: Indicator - Part Type: LED - Manufacturer Part Number: 151031VS06000 - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.we-online.com/components/products/datasheet/151031VS06000.pdf - Manufacturer Name: Würth Elektronik - Role Details: Green status LED driven from Arduino D5 via 220 ohm resistor; through-hole radial package **Pins:** - A [pin 2] - K [pin 1] ### PS1 — [LM2596 DC-DC buck converter](https://www.flux.ai/vasy_skral/lm2596-dc-dc-buck-converter~2q1.md) - Part Type: Integrated Circuit - Role Details: Steps 18 V battery down to 5 V logic rail - Role: Buck Converter Module - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - IN - [pin 2] - IN + [pin 1] - OUT - [pin 3] - OUT + [pin 4] ### Q1 — [IRF4905PBF](https://www.flux.ai/adrian95/irf4905pbf~z8h.md) - Role Details: IRF4905 TO-220 P-channel high-side cutoff, 5 A blower path - Role: Power Switch - Max Current: 5A - Manufacturer Part Number: IRF4905PBF - Part Type: Transistor - Datasheet URL: https://www.infineon.com/dgdl/irf4905pbf.pdf?fileId=5546d462533600a4015355e329b1197e - Manufacturer Name: Infineon Technologies - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - D [pin 2] - G [pin 1] - S [pin 3] ### Q2 — [PN2222ATFR](https://www.flux.ai/adrian95/pn2222atfr~v78.md) - Role: Gate Driver - Datasheet URL: https://www.onsemi.com/pdf/datasheet/pn2222a-d.pdf - Part Type: Transistor - Manufacturer Part Number: PN2222ATFR - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: 2N2222-family NPN gate pull-down for IRF4905 high-side switch - Manufacturer Name: onsemi **Pins:** - B [pin 2] - C [pin 3] - E [pin 1] ### Q3 — [PN2222ATFR](https://www.flux.ai/adrian95/pn2222atfr~v78.md) - Datasheet URL: https://www.onsemi.com/pdf/datasheet/pn2222a-d.pdf - Part Type: Transistor - Manufacturer Part Number: PN2222ATFR - Role: Buzzer Driver - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: 2N2222-family NPN low-side driver for 5 V active buzzer - Manufacturer Name: onsemi **Pins:** - B [pin 2] - C [pin 3] - E [pin 1] ### U1 — [ARDUINO_NANO](https://www.flux.ai/jecstronic/arduinonano~2x.md) - Role Details: Compact Arduino Nano controller replacing oversized footprint; powered from regulated +5V pin - Part Type: Integrated Circuit - Datasheet URL: https://www.snapeda.com/parts/Arduino%20Nano/Arduino/datasheet/ - Role: Switching - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: ARDUINO_NANO - Manufacturer Name: Texas Instruments Inc. **Pins:** - +5V [pin 27] - 3V3 [pin 17] - A0 [pin 19] - A1 [pin 20] - A2 [pin 21] - A3 [pin 22] - A4 [pin 23] - A5 [pin 24] - A6 [pin 25] - A7 [pin 26] - AREF [pin 18] - COM/GND [pin 4] - COM/GND [pin 29] - D0/RX [pin 2] - D1/TX [pin 1] - D10 [pin 13] - D11/MOSI [pin 14] - D12/MISO [pin 15] - D13/SCK [pin 16] - D2 [pin 5] - D3 [pin 6] - D4 [pin 7] - D5 [pin 8] - D6 [pin 9] - D7 [pin 10] - D8 [pin 11] - D9 [pin 12] - RESET [pin 3] - RESET [pin 28] - VIN [pin 30] ### VR1 — [PDB181-K420K-103B](https://www.flux.ai/adrian95/pdb181-k420k-103b~fyb.md) - Manufacturer Name: Bourns Inc. - Resistance: 10kΩ - Part Type: Potentiometer - Manufacturer Part Number: PDB181-K420K-103B - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.bourns.com/docs/Product-Datasheets/PDB18.pdf - Role Details: 10 kΩ linear potentiometer to Arduino A1 - Role: User Input **Pins:** - CCW [pin 1] - CW [pin 3] - WIPER [pin 2] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/tehvofka/18v-bldc-blower-controller-c816~ey](https://www.flux.ai/tehvofka/18v-bldc-blower-controller-c816~ey).* --- *Generated from [https://www.flux.ai/tehvofka/18v-bldc-blower-controller-c816~ey](https://www.flux.ai/tehvofka/18v-bldc-blower-controller-c816~ey)*