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Questions tagged [diy]

Do It Yourself. Build, modify, repair something without the aid of trained professionals.

-1
votes
1answer
29 views

Combining a light therapy LED lamp with a light alarm clock - programmable dimmer

I live in a place where there is little daylight in winter, so I would like to use a light therapy lamp. Also, I would like to use it to wake me up, gradually increasing the intensity of the light ...
0
votes
2answers
121 views

What is this, a capacitor, if so what value. It's a mystery to me

If anyone know what kind of electrical component this is can you help me identify it please. Here is a picture, and I do t remember what I pulled it from.
0
votes
1answer
109 views

Selling DIY electronics online

Ok, I have no idea if this is the best place to ask for this kind of question but I've been scattering the internet for a while to find any info regarding this: Can we sell DIY electronics online? I'...
0
votes
1answer
104 views

handcrafted PCB problems

I have attempted to make this board below at home. Applied negative photoresist paint, left to dry for about 4 hours each side over a radiator, applied a double layer tracing paper with the artwork on ...
1
vote
0answers
37 views

Issue with powering MP3 module with Amplifier

I'm not a electronics engineer/student, so please escuse me if my query sounds a bit naieve. I have a Mp3+FM module (link) which I can power with a regular micro USB charger(or desktop USB). As the ...
0
votes
1answer
31 views

Replacement battery voltage mismatch tolerance?

I want to try replacing a proprietary battery in an electronic of mine as a first electronics DIY project. Thing is, the stock battery is 3.6V, and the phone battery I have on hand that I would like ...
0
votes
1answer
48 views

DIY Solar lamp circuits with 5252F explained?

I have a bunch of solar panels, rechargeable batteries, 5252F circuits, inductors and LEDs and while reading https://artists.scitoys.com/three_volts that seems to be enough to make my own solar-...
1
vote
2answers
77 views

What are these holes for inside a plastic junction box and how to use them?

I would like to mount a Raspberry pi case inside this box I bought and make it possible to remove it. I designed and 3D printed this part to fit on the holes and I would hotglue the Pi case on the ...
0
votes
0answers
19 views

Solar Power Panels How to DIY Books

Are they any books you can recommend for learning about Solar Power Panels and how to connect them? I want to connect - 2-3 180 Watts Solar Panels as an experiment to reduce the electricity ...
0
votes
0answers
80 views

RF Receiver circuit for RC Car

I want to build a RC car, which I can modify at any time,and I had this PT8A978BPE IC (datasheet:https://www.diodes.com/assets/Datasheets/PT8A977B978B978BL.pdf) lying around from an older teardown of ...
1
vote
2answers
46 views

Measure ~300kHz Induction Heater RF Power

I have been tasked to gather data from an old running 335kHz 5kW induction heater system. It has no outputs available to give amperage, power etc. Basically there is an assumption that the unit is not ...
0
votes
1answer
49 views

Can a house battery share common ground with the starter battery without interference?

I am quite new at this so bear with my questions. I have purchased two 12 volt batteries which I will connect in series for 24 volt and to be used as house batteries. I drive a truck which has a 24 ...
1
vote
0answers
37 views

What solution would be a low power option to signal a computer with button presses?

I want to make a custom input device with six buttons that when pressed signal computer to run a program. I would like to do this with a very low amount of power. What options are available to me to ...
0
votes
1answer
59 views

Amp for tweeter in bi-amping

I gonna make some 2-speakers Bluetooth PA system, and I chose bi-amping way with active crossover for do it. I have an 60W amp (battery limits) for my woofer. Skipping all the problems on my road to ...
0
votes
1answer
152 views

Amplifier Noisy Output (LA4597)

I have a problem with my amplifier circuit (LA4597). I tested it (12V). It turns on and the speakers and fine and silent. But when I try to add an audio source (RCA) within the circuit, the speakers ...
1
vote
1answer
76 views

4s battery pack, how to build?

I have 8 cells (samsung icr18650-26f), and I want to build a battery pack 4s 14.8v (4x3.7v) to power an LCD Controller Board that requires a 12v4amp input I have an idea of the design of this battery ...
5
votes
2answers
233 views

What is this wall-to-PCB connector called?

I'm trying to create my first device involving AC mains. It is a wall mounted energy meter. Essentially, it goes between the outlet and whatever device you want to measure and I'd like to have the ...
0
votes
1answer
43 views

Choosing a motor to lift window blinds [duplicate]

I'm looking to raise my blinds every morning using an rpi/Arduino and a motor. The blinds are lifted by a cord that loops near the bottom. I've checked that the cord requires about 20N force to pull ...
0
votes
1answer
82 views

Which Board Should I Use For High Frequency GPS?

This is a very general question, hopefully with the amount of information I provide you will be able to steer me in the right direction. I am trying to build a very versatile GPS receiver, with ...
0
votes
0answers
102 views

Debug Anet A8 Clone 3D-Printer Mainboard (Chinese) Thermistor Temperature Error?

I have a chinese clone 3D-Printer (CTC i3 proB MK2A) and successfully printed several prints, until I had a filament jam and the nozzle was ruined etc. Now, the printer shows 270° hotend temperature ...
10
votes
2answers
302 views

Why won't this DIY transistor attempt conduct

I've been trying to make a crude transistor device at home. So far I have not been successful. My electrical understanding is next to non existent other than what I've learned in the last 3 months ...
1
vote
1answer
58 views

Simple DIY laser alarm

Im begginer and currently Im trying to make DIY laser alarm (while laser is pointing at LDR sirene should remain silent and when laser is turned off, sirene should make sound). I found online ...
2
votes
2answers
1k views

Unbalanced to balanced audio signal conversion

When I was looking for some information how to convert unbalanced audio signal to balanced, it was hard to find info other than "use transformer" or "buy X device to do this". Then I found this ...
0
votes
1answer
281 views

How to make a small Spot welder for E-cig mesh coil welding?

I want to make a DIY spot welder I am planning to rebuild a non-rebuildable heating coil (Eleaf HW-N) and I need to weld two Non-Resistive(low resistance) wires. A Stainless-Steel net to a Nickel-...
1
vote
1answer
53 views

WIll the multimeter continuity test on the SOIC - DIP adapter spoil my IC?

IC : L9637D for ISO 9141 bi directional serial comm. Multimeter: Mastech I am mounting an SOIC 8 IC on an adapter(regular Soic to dip adapter), so I can mount the adapter on a bread board for use. ...
0
votes
0answers
74 views

replacing an old behinger power supply

I recently acquired a Behinger MX1 mixer, but without a power supply. Since Behinger no longer makes these mixers it has become very difficult too buy a replacement power supply. Which is why I ...
0
votes
0answers
36 views

Can I burn firmware on a DIY Pickit without needing a pre-existing Pickit?

I've been wanting to get into the PIC for some time now, and looked up a bunch of sources and tutorials on a DIY Pickit. However, every source I've seen has this one critical piece that's bumming me ...
0
votes
2answers
492 views

What do hot/warm wires mean?

I am making an electrical fridge for a school project. I am using a 12v Peltier cooler and using a 12v 30a power supply. I have all the wiring and everything already set up, and no matter what I ...
0
votes
1answer
162 views

How can I test the resistor on my USB connector?

I have purchased some USB-C connectors that I use to build my own cables with (I have separate "host" and "device" side connectors for various cable assemblies), and I was wondering how I might go ...
0
votes
1answer
89 views

Where can I find easy to understand instructions for real world applicable inkjet printed electronics [closed]

To explain what I'm trying to do a bit more, here is an overview of my ideas in this case. As far as I understand so far, it's technically possible to create complete PCBs including chips, memory ...
0
votes
1answer
50 views

How to enable auto detect AV inputs using dummy signal instead of actual video?

I got a TV with a cracked screen that otherwise works fine, which I managed to change the inputs to "AV" (3 RCA jacks). So I amputated the screen and now have a mini stereo with remote. The only ...
0
votes
1answer
99 views

What material to use for a capacitive sensor?

I'm doing a DIY project that I want to use a capacitive sensor for. I'm having a little plastic box and I want to send a wireless message when someone touches the top of it. I understand all the ...
2
votes
0answers
156 views

Help Identifying this circuit and understanding how it works

So I'm hoping to make a few modifications to my Computer case and have found that a number of the LED elements have an associated circuit to them. I want to be able to understand what I'm doing and ...
0
votes
1answer
115 views

How to buy electronic components for little projects? [closed]

I have some projects in mind, some of them under development, and I want to design PCBs for them with little SMD components. So I have been choosing some of the ones I need in websites like Digikey or ...
0
votes
1answer
61 views

FR 5311M Programmable servo? [closed]

I bought this odd servo motor called the FR 5311M from FeeTech, which is advertised as a programmable servo motor which can switch from position to continuous rotation by flashing it with FeeTech's FR ...
3
votes
5answers
981 views

How to get 20 V from a USB-C charger?

I want to power my DIY stuff with a MacBook Pro USB C charger. The label on a charger says that it can provide three different power profiles: 20.2V - 4.3A 9V - 3A 5.2V - 2.4A There is a ton of ...
1
vote
3answers
346 views

DIY 5V power supply from phone charger

I want to power 25 adafruit NeoPixel LEDs. According to the specs they draw a maximum of 60mA at 5V each. In total that would be 1,5A at 5V. I would like to use a 2A usb phone charger as a power ...
6
votes
6answers
2k views

Techniques for building 'Bed of Nails' testing board

When testing a complete circuit board a 'Bed of Nails' can significantly reduce time and errors. What are some techniques for making a DIY Bed of Nails? ...
0
votes
1answer
184 views

2D DIY capacitive panel

I'm planning on replacing lights with smart bulbs (e.g. Yeelight RGBW) and replacing light switches with capacitive panels connected to Arduinos which will send data to RPi, which will then control ...
0
votes
2answers
652 views

Replicate PCB design on stripboard

I'm thinking about making a DIY project (this one). I'm a complete n00b, I just have some theoretical knowledge about electronics from some university courses, and I'd like to learn some more. I was ...
0
votes
0answers
23 views

Driving the 030TUE010 display, how?

Does anybody here know how the display of the Coolpix L20 can be used? Can't seem to find a datasheet anywhere
0
votes
2answers
87 views

Getting circuit input on a computer

(Modified repost from stackoverflow since it might be more suited to this site) I wanted to try building an arcade stick starting as simple as possible(ICs and basic electronic components as opposed ...
-1
votes
1answer
154 views

DIY battery from scratch. Is it possible? [closed]

Batteries are expensive. I want to be able to store about 30 kW worth, but even the cheapest kinds of batteries, like Lead-acid, or Salt Water batteries are too much. I've looked into reviving dead ...
0
votes
2answers
1k views

Is there any formula to get number of windings for a 50W voice coil of a speaker?

Is there any formula to calculate number of windings to get a 50 Watts voice coil of a speaker? let's say, I want to wind a 20mm diameter voice coil for a speaker. And my coil is made out of copper ...
0
votes
2answers
590 views

How to Make DB9 F/F serial RS232 mini gender changer?

I want to connect My "USB to RS232(Male end)" to my NanoVolt Meter having RS232 male port. To make both communicate i need to make DB9 F/F serial RS232 mini gender changer. Any Circuit or suggestion ...
0
votes
1answer
2k views

series charging three 18650 batteries with three chargers off the same 5V supply [duplicate]

being from a CS background I am a complete noob at this. I'll keep this short. I have a couple of 18650 batteries that i salvaged from an old laptop battery. I want to make a balanced 3S charger with ...
-1
votes
1answer
118 views

DIY TDA2822N computer microphone

I am using the following circuit to make a computer microphone. The "speaker" component is the computer's microphone input. The problem with this circuit is that somehow I can hear capacitors ...
1
vote
1answer
189 views

Meanwell vs generic power supply [closed]

I am currently planning out a custom 3D printer build which will run on a 24V 600W power supply. I have specked out for a $90 MeanWell supply from eBay, but I've noticed similar generic power for ...
0
votes
1answer
110 views

Building homemade low inductance capacitor

i am trying to build a low inductance capacitor. I could just buy a doorknob capacitor but i don't wanna pay that much. So i know that you need a dielectric, i am using overhead transparency sheets. ...
0
votes
1answer
105 views

Which end is host in a USB-C to USB-C charging/power cable?

I have two different kinds of DIY USB-C connectors...one kind that is rigged to be a "host" USB-C connector (pulled-up with a 56k resistor per spec), and the other is rigged to be a "device" USB-C ...