All Questions
Tagged with diy circuit-design
14 questions
0
votes
2
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70
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Automate home blinds with motor, potentiometer and 3P switch
I've been developing an interest for electronics and whenever I have free time I like to study it and tinker with whatever components I have at home.
An interest in electronics + the annoyance of ...
1
vote
1
answer
139
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Building a DIY BGA Rework Machine
simulate this circuit – Schematic created using CircuitLab
I am trying to build a DIY BGA reflow machine. I have a very crude schematic, but the idea is run each of the 6 heating elements in ...
- 11
1
vote
1
answer
179
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How to improve my son's solar bobble head [closed]
My son has a minecraft solar bobble head (in this case a bobble Steve). Under light it swings a diamond sword this exact one (Puckator Officially Licensed Minecraft Steve Solar Pal https://amzn.eu/d/...
- 13
0
votes
0
answers
438
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12-lead ECG circuit diagram
I am trying to build 12 lead ECG circuit for my project, so could someone explain to me what should I do about allocating the electrodes on this diagram? Where do they need to be attached?
Source: ...
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0
answers
55
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Analog motion triggered alarm design (amateur) - Seeking professional's advice
I've designed a circuit and I want to confirm if it will work. Below is the working:
A very low current, battery powered motion alarm.
User can set 3 timers (srm delay, alarm go off delay, alarm ...
- 673
0
votes
1
answer
1k
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How to drive this solenoid + littleBits?
I have a 5V solenoid, and I am trying to power it from littleBits.
I had a littleBits servo bit and cut its wires. The orange wire should be control wire. The reason I want littleBits is because I am ...
- 109
1
vote
1
answer
2k
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Momentary switch on-off circuit
I am trying to create a circuit to allow me to switch a project on and off with the activation of a momentary switch (a momentary push button or reed switch, for example), but I'm coming up blank and ...
- 41
0
votes
1
answer
99
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Building a voltage adjuster circuit
I've been trying to build an op amp circuit that takes an analog signal from my electric guitar of around -1.5 to 1.5 V to a voltage level of 0 to 5 V, so that I can put it into the ADC of a ...
- 143
0
votes
2
answers
237
views
Connecting Headphone to Phone and Laptop via Switch
I am trying to build a small circuit which will connect my phone, laptop and headset with a switch.
So in state 1, the headphone and phone will be connected
and in state 2, the headphone and laptop ...
-6
votes
2
answers
605
views
Pulsed DC From 'pure' DC (Via Switching System Without Moving Parts)
I want to create a circuit or mechanism that will let me switch the output from the starting value to 0 and back. My input is pure DC. I want to do this with fairly basic DIY supplies if possible (no ...
- 9
0
votes
0
answers
966
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DIY Bluetooth speaker circuit won't turn on
I'm making a Bluetooth speaker and made a schematic which I'm using to follow to build the speaker.
It's loosely based on this DIY video I saw online, here's the picture of the relevant parts I ...
- 211
3
votes
0
answers
257
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RF signal Multiplier or Chopper
I'm trying to design a circuit that "multiplies" two signals.
I have an electrical unit with two separate circuits. One circuit drives the other one with a square signal. The width of the square ...
- 31
1
vote
1
answer
501
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Flashing light circuit
Problem:
I have built a wooden model of a lighthouse. I want to make the light in the house flash.
I am can use a soldering iron. I have no circuit experience.
Question:
How can I build a simple ...
- 113
1
vote
1
answer
232
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Are there any problems with my circuit design?
I am new to designing circuits but I have spent a lot of time researching for this project. I have been designing an automated indoor garden for my home. To save space, there will be 3 gardens stacked ...
- 13