Print Page - Power Moteino from 24v

Title: Power Moteino from 24v
Post by: Lukapple on February 02, 2019, 10:55:38 AM

Hi guys,
I've a Moteino controlled siren which is powered by 24v power supply.
You can find details HERE (https://lowpowerlab.com/forum/projects/control-24v-alarm-siren-with-moteino-using-uln2003an/).
I'm currently using a separate power supply for Moteino. What is the best way to use same power supply as siren? Which voltage regulator should I use?

Thanks!

Title: Re: Power Moteino from 24v
Post by: sparky on February 02, 2019, 10:59:34 AM

This is the one used on the IOShield kit that I use for my sprinklers..

https://lowpowerlab.com/shop/product/133

Title: Re: Power Moteino from 24v
Post by: TomWS on February 02, 2019, 11:05:23 AM

Quote from: sparky on February 02, 2019, 10:59:34 AM
This is the one used on the IOShield kit that I use for my sprinklers..

https://lowpowerlab.com/shop/product/133

Good recommendation. There are lower cost choices that are similar, but not packaged as conveniently. A quick look for 5V Switching Regulator should turn up some alternatives. Note that the 24V input voltage will have to be DC, but a simple silicon diode and bulk capacitor should take of that. Just be sure that the input rating of the switching regulator is at least 35V.

Title: Re: Power Moteino from 24v
Post by: Lukapple on February 02, 2019, 11:12:25 AM

Thanks for the quick reply! I'm going to order one right away!

Title: Re: Power Moteino from 24v
Post by: sparky on February 02, 2019, 11:32:40 AM

Lukapple,

You have any more details on the board you are using and possible schematic? Did you design and make it?

Thanks

Title: Re: Power Moteino from 24v
Post by: Lukapple on February 02, 2019, 11:48:21 AM

Yes, I've designed it. See attached Eagle project.
You can find more details on the link in my first post.

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Hardware support => General topics => Topic started by: Lukapple on February 02, 2019, 10:55:38 AM