I'm embarking on my first DIY project to build an electrical standing desk with a unique L-shape. The desk measurements are about 60cm wide by 180cm long with a 120cm L-part and a height of 75cm, using 4cm thick wood. I'm using two DIY electrical frames supported by windshield wiper motors and a gearbox to manage the load through a lead screw. I'm planning to lift the desk from 75cm to a maximum of 150cm. However, I'm struggling to visualize the design and tackle the electrical side, which involves a 24V or 12V power supply connected to a DPST switch for up and down motion, with limit switches for height control. I'm also on a budget, as the commercial frames are too expensive for me right now. Is there anything crucial I'm missing? Also, do windshield motors rotate in both directions? Should I just consider a manual adjustment for now?
3 Answers
You might want to consider using linear actuators instead of windshield wiper motors. They could simplify your setup. If you don't mind adapting something from Harbor Freight, that could work too. The challenge is figuring out what fits your budget since shipping can really add up, especially for heavier items like desk frames.
Just be careful with the costs. Sometimes it’s cheaper to get a ready-made frame on sale than to piece together all the electronics.
If your desk is 40mm thick, you might not need a robust frame. A dual motor desk frame could work, and you can adjust the feet according to your preference. Just make sure the desk doesn’t bow under weight; adding a support beam can help if you’re concerned about stability.
If you're worried about uneven lifting, a limit switch is a great idea! Just be sure to install it properly.
Totally get that! I’m mainly worried my desk could tip with my gaming setup, so I want to play it safe.
Your current setup might be underestimating current draw. With a 5A fuse for two motors, you’re probably pushing it. Plus, for proper voltage, you should wire the motors in series for consistent performance, but make sure they're identical.
Just don’t forget about those limit switches; having over-travel could lead to some serious issues!
Thanks for the heads-up! I’ll definitely consider the binding belt I mentioned to keep everything smooth. The last thing I need is a malfunction mid-lift!
Yeah, shipping costs are a killer. Linear actuators are a bit pricey too; I'm leaning towards a DIY approach for now until I can save up. Thanks for the suggestion!