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0 votes
5 answers
91 views

How to switch between two signals with a digital signal?

I have two different potentiometers. Each sets different voltage reference signal for a current source. How can I make an Arduino or any digital signal to switch between these two potentiometers? (No ...
CaveScientist's user avatar
-1 votes
1 answer
120 views

How can I make a circuit that works like a pushbutton without a pushbutton?

I am trying to make a circuit that would do the job of pushing a pushbutton just once but without a pushbutton in order to make it automatic. A sensor activates it, and a latching relay circuit gets ...
Carlos Puente's user avatar
0 votes
1 answer
918 views

USB 1 to 2 switch wiring

I have 1 USB hub with mouse and keyboard connected and I'd like to build a switch to be able to switch this hub between 2 PCs. I have a 3-position toggle switch with only 2 contact pairs, so I can ...
schmidt9's user avatar
  • 105
-1 votes
2 answers
84 views

How can i make this circuit to switch between two terminals? [closed]

I want to make a circuit so that with a push of a button(hardware one of any kind) i can switch this to this Using micro-controllers is also an option just as a passthrough
rohithrathod banoth's user avatar
0 votes
2 answers
153 views

Can I connect grounds of two different 9V batteries?

I want to make a backup battery connector for my project so I can power it externally if the internal battery dies. For this, I'm planning to use a SPDT switch with the pole connected to the circuit'...
MLpranav's user avatar
0 votes
1 answer
467 views

Adding key switch to a PC. [closed]

So, I'm making a custom PC case for myself. I want to add a simple on/off key switch (like all of the bikes have), only on ignition, start + restart button should work. Here problem is that, I ...
fortyseven's user avatar
0 votes
1 answer
398 views

Load Switch for controlling battery circuit power via MCU GPIO pin

I’m making a battery powered air quality sensor node using Adafruits Feather M0 LoRa MCU. I have a MH-Z19 carbon dioxide sensor that requires 5V (datasheet says 3.6 ~ 5.5 V DC, and average current ...
Frode's user avatar
  • 103