Heya, looking for a soil moisture sensor that has a usable output, that won't corrode quickly or at all. I see a bunch of cheap 5 packs, but those don't look like they would last long. All the nicer ones don't seem to be made to hooked into a DIY system. Anyone have better luck finding such a thing?
I made an external DIY monitor though I would like to power it using a usb port and since the monitor board needs 12v and min 3A I thought to use the usb 3.1 gen2 type C port because it can deliver higher amps than a usb 3.0
Question is: is it enough if I get a step-up module from 5v to 12v 3A (maybe something like this) and wire it using type c connectors?
should I stick to the normal usb 3.0 and get a step up 5v to 12v 2A and use an amp-booster ( if that is a thing)?
I have the Asus Q504u laptop; the version without the fingerprint sensor on the touchpad. I found this on ebay, and was wondering if I could switch it out with my current touchpad? I don't know if I would be missing some cables or connections or whatnot. Only difference between my laptop and the one with the fingerprint sensor is the sensor itself.
I wholly realize that I'm doing this bass-ackwards, but I need help finding a project to take on. I get into these moods where I need to build something and this time I'd like it to be something electrical.
I have no actual needs or problems for this mystery object to address, but these are the loose specs I'd like to shoot for:
Small form factor (18"x18")
A fair bit of wires Soldering
Some sort of actual function
I'm looking for some guidance on creating a bench test setup for testing multiple DC power adapters with corresponding plug types. Ideally, it'd be a board layout with varied female plugs and an LCD output to display (validate) the voltage and current from small 5vDC/0.5mA on up to typical laptop supplies of 19vDC/4+mA Has anyone made anything like this? Have a parts list? Or is there a place that can "take my money" for one? Thanks!
Any recommendations for a very small touchscreen that is under 2" and doesn't run any proprietary software?
I'll probably be using it with a beagle board.
I was looking at this power supply
But I want it to control 2 of these
Could I wire these up? How would I wire them, I'm a noob at this.
I was hoping to find a website that I can upload a dvd label and they will print a high quality blank dvd for me and dvd case for me and mail it to me then I can burn onto the dvd the content and give it as a gift.
I prefer not to simply make sticker labels if possible I would like something higher quality.
All the websites I can find are for making 100+ dvds at a time, and I really just want one as it is for a gift.
I recently built a small Bluetooth speaker from an old Bookcase speaker. It works pretty well but I haven't been able to figure out how to turn the battery ON/OFF in a decent way.
I currently have a 9800 mAh battery pack fixed to the inside of the speaker, a bluetooth amp above that. All of that is hidden within the speakers case and the drivers are fixed as usual so you don't see the cables, battery and amp.
The battery looks very similar to the picture below.
As you can see, the battery has a ON/OFF switch at the top right. For now, I have drilled a small hole through the speaker case and have fitted a screw fairly loosely so that I can flick the battery switch on and off.
Its a provisional solution and I'm not happy with it but still haven't been able to find a better solution. The switch on the battery is only about 1cm wide so its quite small.
I have been looking for a simple mechanical switch that I can fit onto the case, that reaches into the case and flicks or clicks the on/off button on the battery.
The distance between the edge of the case, where the switch would need to be placed and the on/off switch of the battery is roughly 3cm.
Does anyone have any idea where I could buy or how I could build a switch to make this whole system a little more reliable and cleaner?
I appreciate any suggestion and hope I have somewhat explained what I am looking for.
Hi everyone, I wasn't sure where to look for advice on this question but my wife found this sub and I thought I'd try my luck.
Backstory: So we're expecting an addition to our family in October and as I live 8 timezones from my family I'm a little bummed they won't be able to see or interact with the baby as much as I would like. I hit on the idea of having a camera that is able to stream video of the sprog whilst it's in the crib, so my folks can connect and see the little one as they sleep. However, I don't want the camera to be accessible while my wife and I are feeding/tending to the baby in the middle of the night.
Solution?: Is it possible to have a physical button switch by the door (with red/green (streaming/not streaming) indicator light) that we can hit to disable the stream when we're about to enter the room, and then hit again to resume streaming when we are walking out? The baby will be in the same room as us for a while, but I figured I'd think ahead to when they are in their own room.
I'm quite techy by nature, but I have no idea if it's a possibility worth researching further. Obviously there are many variables, can I use an old phone as the camera, like with project Haven? Can I use a raspberry pi or equivalent? Is it even possible to have an on/off button? Am I barking up the wrong tree?
Anyway, if you've got this far, thanks for your time. Also, if anyone has any other subreddit suggestions I should think about posting this to, please let me know.
Thank you all :)
I'm sticking two 10ft posts into the ground with a bar between them; I am 6ft 1' and I want to be able to grab the bar without my feet touching the floor.. at the moment that seems like I can only put the posts 2ft into the ground but I'm not sure this is enough for stability.
They will be postcreted into the ground.
I see the Minty Pi projects all the time and I was wondering if I could do something similar except without a raspberry pi. I want to put a galaxy s4 inside and wire it to a small screen. Is it possible? Edit: no controller gonna attach a Bluetooth one
So, I know the title doesn't sound very techie but its what I want to do that is. So I want to build a gaming shelf that houses one console per square kind of like this with LED lights attached to each individual square.
The techie part is how would I go about being able to set up (if at all) the lights to illuminate individually whenever the specific console I want to play turns on? I would think a Pi would be the best course for something like this but I wanted some advice on how to even go about building this and setting up the Raspberry Pi. Thank you.
i got a usb controller which needs a new cabel. https://i.imgur.com/rPOrsR5.jpg I figure the most professional way would be to desolder the current wires pull them out, put the new ones in and solder them BUT ... i've never done that and i'm not particular good at soldering. I imagen it to be ver bad, if one of the solder-blops overlap and touch the neigbour. but they are only seperated by a hair thin space. how do you do that? or should i just keep the existing wires in, cut them off after 1cm and solder those to the new cabel?
I'm trying do build a gaming device for indie, steam, and cloud gaming. Can someone point me in the right direction. I know I would need something like a mini itx board but I'm lost lol. I also need a good 3d printing manufacturer for casing and bezel for screen. Whats a good custom PCB manufacturer.