# Arduino Variable Speed Pool Motor?
**URL:** https://discourse.nodered.org/t/arduino-variable-speed-pool-motor/61523
**Category:** General
**Created:** [20 April 2022 05:13 UTC](https://discourse.nodered.org/t/arduino-variable-speed-pool-motor/61523 "2022-04-20T05:13:19Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Choder](https://discourse.nodered.org/u/Choder)
#### Post date: [20 April 2022 05:13 UTC](https://discourse.nodered.org/t/arduino-variable-speed-pool-motor/61523/1 "2022-04-20T05:13:19Z")
I am wanting to control a three-phase 220vac variable speed pool pump from node red.
Currently I am using node red installed in a VM proxmox server. This communicates via wifi to an ESP32 to control all my pool equipment (heater, pump, valve actuators, read temperature and pressure)
I was wanting to control a VFD controller to power a three-phase motor for a three-phase variable speed pool pump.
If I connect one of these max485 to the ESP32, will this show up in my VM proxmox node red for me to control the VFD drive?
> **[Max485 Chip RS-485 Module TTL to RS-485 Module Raspberry Pi Pack of 5:...](https://www.amazon.com/Max485-Chip-RS-485-Module-Raspberry/dp/B00NIOLNAG)**
>
> 5pcs MAX485 Module RS-485 Module TTL to RS-485 Module MAX485 chip is a low power consumption for RS-485 communication, limit the slew rate transceiver. Then 5.08 (mm) pitch 2P terminal, convenient RS-485 communication wiring. Chip leads all pins...
Will I be able to communicate with modbus from node red to the ESP32 to the max485 to control the VFD?
> **[node-red-contrib-modbus](https://flows.nodered.org/node/node-red-contrib-modbus)**
>
> The all in one Modbus TCP and Serial contribution package for Node-RED.
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [19 June 2022 05:13 UTC](https://discourse.nodered.org/t/arduino-variable-speed-pool-motor/61523/2 "2022-06-19T05:13:30Z")
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