All Questions
47
questions
0
votes
1
answer
86
views
I am building a circuit that operates at 5 V but I need to use SIM7600 module @12 V
I am building a circuit with an Arduino that operates at 5 V, but I need to use a SIM7600 module that will be connected to the Arduino's pins, and needs 12 V in order to operate.
Will I have any ...
- 175
0
votes
1
answer
785
views
How to use TVS diode for Overvoltage Protection while powering Arduino on Vin Pin?
I am trying to make a protection circuit for Arduino nano to protecting overvoltage. Normally if I powering "Clone" arduino NANO with 12 Volt, Arduino nano is starting to smoke. So I've ...
- 1,139
0
votes
1
answer
181
views
Grounding microcontrollers, signal and logic level wires in a vehicle with buck converters
I sketched out my main installation in my project vehicle. To summarize, it runs with isolated DC converters, one gets the input from main battery (standard 12V lead acid) and converts it to clean ...
- 53
1
vote
4
answers
2k
views
12V pulses into 5V pulses
I have a 12V pulse square signal coming from an RPM sensor. I would like to translate it into 5V pulses since I will need to use it as input in an Arduino. What do you guys think is the easiest way? ...
- 55
0
votes
1
answer
768
views
Switching 12V vehicle headlights with Arduino / Mosfet combination
Ground level noob here, started to tinker with electronics at the beginning of this year after I couldn't get any electronics shop in my town replace my bike's gauge cluster SMD LEDs.
I learned few ...
- 53
1
vote
2
answers
237
views
MOSFET started to smoke when switching a 12V bulb - how can I troubleshoot the cause?
This is the case: 12V bench power supply (current limited to 3A) wired to a 30W LED bulb (H7 bulb for vehicles), controlled by an Arduino via the gate of the 2SK1363.
The signal from the Arduino was ...
- 53
0
votes
1
answer
259
views
Wiring two separate circuits with separate loads (one with mosfet and Arduino) with a single bench PSU
I have a cheapo bench PSU with one pair of terminals on it and I am trying to wire the pictured circuit correctly and in best possible practice. As my description on the schematic says, one LED device ...
- 53
1
vote
3
answers
391
views
Switching 12V with Arduino Nano
I am trying to design a circuit to switch 12V 90mA on/off using an Arduino Nano as the trigger.
Is there an optocoupler/transistor/MOSFET that can tolerate 12V at 100mA on the load side while still ...
- 11
0
votes
0
answers
361
views
Solenoid 12 V control with Arduino
I have some 12 V solenoids and I want to control them via Arduino, but Arduino outputs a maximum 9 V voltage through the Arduino jack input, and the voltage on Arduino pins is only 5 V, so how do I ...
0
votes
1
answer
1k
views
Replacing BD139 for TIP122 - Cooler speed control circuit
I'm using a cooler (=fan) to conduct heated air through a hose to a closed chamber using an Arduino UNO PWM . A PID system controls the current across an array of resistors to target the setpoint ...
- 35
1
vote
1
answer
880
views
12v DC brushless PWM fan burnt out via Arduino Uno
I’m working on a project where I want to control the speed of a fan using a microprocessor.
I read several posts about using an Arduino Uno to control the PWM function on a 4 pin fan you find in PCs, ...
- 13
0
votes
2
answers
635
views
Is it appropriate to use the TB6621 or DRV8871 motor driver for powering 12V 1 amp motors?
I'm looking to make an Arduino powered rock crawler with 4 motors (want independent control of each wheel, also need to reverse).
I'm looking into buying 12V DC motors that seem to have about a 1A ...
0
votes
1
answer
153
views
Check for 12V with Arduino (Two resistors and a diode)
I need to read the presence of 12V on one of the lines of the board. I want to read using Arduino UNO.
I found the following scheme:
Is this scheme correct?
- 535
2
votes
1
answer
489
views
Arduino and car's 12V switch
I'm trying to control my headlights with my Arduino and a LDR. For this I will use the Arduino as a middle man between the lights switch and the actual lights.
The switch has three positions OFF / ...
1
vote
1
answer
156
views
micro blown up with 3V?
I'm attempting to make a 12v blinking light that turns off with a high signal and since I've got some 5v arduino pro minis I though I might do it with them. So I put together a program and a plan
My ...
