I bought an IKEA standing/sitting desk that currently uses a hand crank to adjust the height ( http://www.ikea.com/gb/en/products/desk ... -49084965/ ) and I want to attach a powerdrill motor or similar that I can control with the Huzzah feather via Blynk, and then in extension via voice control.
I had a look at the DC motor featherwing addon but it will only do 1.2A and I would have to use a stepper motor which I guestimate, will be quite a bit slower than a power drill motor.
So my idea was to simply control the powerdrill motor via a relay which simply turns it on or off. That wont be as precise but good enough for my use case. Any suggestion on what extra hardware I need besides my Huzzah, or , any other suggestions on how to solve this problem?
Thanks for any advice!
Suggestions for Huzzah controlled sit/standing desk
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- markvanhaze
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- Joined: Thu Nov 17, 2016 5:30 am
- adafruit_support_bill
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Re: Suggestions for Huzzah controlled sit/standing desk
What kind of drill motor were you thinking of? Due to the lower voltage, cordless drill motors generally require a lot more current than AC drill motors. Most pull at least 20A. If you are using a cordless drill motor, you will need a power source and relay capable of handling that. AC drill motors run at higher voltages, so they need less current to create the same torque.
- markvanhaze
- Posts: 16
- Joined: Thu Nov 17, 2016 5:30 am
Re: Suggestions for Huzzah controlled sit/standing desk
Yes thats what I was thinking. It would be a cordless drill motor, running on something around 12V or higher and I didnt measure it but I expect it to draw well above 1.2A which is the limit for the feather shield. I have a brick that will power the drill, so thats not the problem.
- adafruit_support_bill
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Re: Suggestions for Huzzah controlled sit/standing desk
I'm assuming you will need to reverse the motor to lower the desk. To do that you will need an "H-Bridge" capable of switching the high current for your motor. You can buy solid-state H-Bridges, or make one from relays. This Wikipedia article explains how they work: https://en.wikipedia.org/wiki/H_bridge
This instructable shows how to build one: http://www.instructables.com/id/How-to- ... -H-bridge/
This instructable shows how to build one: http://www.instructables.com/id/How-to- ... -H-bridge/
Please be positive and constructive with your questions and comments.