G+_Rud Dog Posted February 22, 2016 Share Posted February 22, 2016 What is the absolutely smallest 120VAC to ~200mA@5V transformerless supply? Have found the data sheets of some that are small till you start adding the external support components. Looking to have it fit in a regular lighting single gang switch box. Link to comment Share on other sites More sharing options...
G+_610GARAGE Posted February 22, 2016 Share Posted February 22, 2016 I would use a wall wart and solder your wires directly to the pcb. I have seen a couple before that are narrow, but long and should fit inside the box quite snuggly. This one looks like the wall wart that I am thinking of. http://www.mpja.com/5-Volt-DC-Plug-Power-Supply-4A-Regulated/productinfo/18520+PS/ Link to comment Share on other sites More sharing options...
G+_610GARAGE Posted February 23, 2016 Share Posted February 23, 2016 Wayne Hobbins ......Mabey? Ok yes. :) Thanks for reminding me. I forgot that they had those small chargers. Probably because I loose them. :) Link to comment Share on other sites More sharing options...
G+_610GARAGE Posted February 23, 2016 Share Posted February 23, 2016 Wayne Hobbins Quadcopter accident. Accidently hit the throttle and the prop sheared off my hyphen. I don't like to talk about it. ;) Link to comment Share on other sites More sharing options...
G+_Rud Dog Posted February 23, 2016 Author Share Posted February 23, 2016 Are you talking about removing the circuit board from inside the wall wart and slipping that into the electrical switch box? Link to comment Share on other sites More sharing options...
G+_610GARAGE Posted February 23, 2016 Share Posted February 23, 2016 Rudy Trujillo Yes. Though with those small usb chargers, it may be easier to solder leads directly to the plug prongs (after some pruning) and use a usb cable glued on for your 5v leads. An angled usb cable would give you more room. Link to comment Share on other sites More sharing options...
G+_Ben Reese Posted February 23, 2016 Share Posted February 23, 2016 I've thought about this same thing. Would want: 5v transformer Arduino micro/nano/mini NRF24 radio Relay... Might need a bigger box. Link to comment Share on other sites More sharing options...
G+_Scott W Posted February 23, 2016 Share Posted February 23, 2016 I've been using these. http://www.ebay.com/itm/2-Pcs-HLK-PM01-AC-DC-220V-to-5V-Step-Down-Power-Supply-Module-Household-Switch-/351467761626?hash=item51d51c6fda Link to comment Share on other sites More sharing options...
G+_Rud Dog Posted February 23, 2016 Author Share Posted February 23, 2016 Did some searching for transformerless AC to DC conversion and found this : http://www.digikey.com/en/product-highlight/c/cui/miniature-sip-ac-dc-power-supplies Now guessing will have to find the size of the supporting external components unless someone has approached it from the way and know first hand? Link to comment Share on other sites More sharing options...
G+_Rud Dog Posted February 23, 2016 Author Share Posted February 23, 2016 Sorry Scott just followed the link you posted and will head back to read the entire description of what you posted. Link to comment Share on other sites More sharing options...
G+_Rud Dog Posted February 23, 2016 Author Share Posted February 23, 2016 Scot do you happen to know the dimensions on that module? Link to comment Share on other sites More sharing options...
G+_Scott W Posted February 23, 2016 Share Posted February 23, 2016 L= 1 3/8 W=13/16 H=5/8 taken from one I have in stock, I use these on a custom PCB I purchased here:http://dirtypcbs.com/view.php?share=11495&accesskey=9a4200ea5d04f2725b5bf0a93925ed8c You can read about it here: http://forum.mysensors.org/topic/1540/110v-230v-ac-to-mysensors-pcb-board Link to comment Share on other sites More sharing options...
G+_Rud Dog Posted February 23, 2016 Author Share Posted February 23, 2016 Nice board. Is the output from the module, as a standalone, equal to the output from the USB pins from the wall warts discussed herein? Link to comment Share on other sites More sharing options...
G+_Scott W Posted February 23, 2016 Share Posted February 23, 2016 Yes, I also use them as a standalone power supply in other sensors I have built. http://www.rsweeks.com/photos/HA/PA280241.JPG this is for a motion sensor light I took the guts out of and replace with my own hardware to connect with my home automation. Here is everything being crammed inside, the Power Supply is near the back of the top PCB. http://rsweeks.com/photos/HA/PA280246.JPG Link to comment Share on other sites More sharing options...
G+_Ben Reese Posted February 23, 2016 Share Posted February 23, 2016 The boxes Scott linked to on eBay are 600-1000ma. A current phone charger is going to be 1000ma+. Arduino by itself consumes I think <200ma. Just depending on what else you plan on hanging off this, I think you should be fine. Link to comment Share on other sites More sharing options...
G+_Rud Dog Posted February 23, 2016 Author Share Posted February 23, 2016 Scott W Looks like a nice little wireless relay control project. How do you interface with it? Link to comment Share on other sites More sharing options...
G+_Rud Dog Posted February 23, 2016 Author Share Posted February 23, 2016 Thanks Ben. Link to comment Share on other sites More sharing options...
G+_Scott W Posted February 23, 2016 Share Posted February 23, 2016 I use a Vera Lite: http://www.amazon.com/Mi-Casa-Verde-VeraLite-Controller/dp/B007005364/ref=sr_1_1?ie=UTF8&qid=1456259623&sr=8-1&keywords=vera+lite And use the ethernet gateway from MySensors.org to interface with my sensors and the Vera: http://www.mysensors.org/build/ethernet_gateway Link to comment Share on other sites More sharing options...
G+_Rud Dog Posted February 23, 2016 Author Share Posted February 23, 2016 Are you running some kind of small linux on the board itself? Link to comment Share on other sites More sharing options...
G+_Scott W Posted February 24, 2016 Share Posted February 24, 2016 No, just using Arduino boards. Link to comment Share on other sites More sharing options...
G+_Rud Dog Posted February 24, 2016 Author Share Posted February 24, 2016 That controller looks interesting now for some more reading. Link to comment Share on other sites More sharing options...
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