All Questions
31
questions
0
votes
0
answers
73
views
How to make a hight power strobe light (ACL) with arduino and high power LED
I'd like to make a high power strobe anti collision light (ACL) for aviation.
The available power source is 12 - 13 V DC.
The strobe pattern should be programmable / adjustable, therefore an arduino ...
0
votes
3
answers
331
views
Am I configuring the IR2104 incorrectly?
I'm trying to make a buck converter using IR2104 and IRFZ44N. The buck converter is controlled using Arduino's PWM. I'll post my schematic below.
Based on the datasheet, the HO signal will be the same ...
1
vote
2
answers
209
views
Using two lithium-ion batteries to power three separate components with buck converters [closed]
I'm trying to use two 7.4 V two lihtium-ion bateries connected in series to power an Arduino Due, a Buslinker, and two L298N motor drivers.
In series, the total voltage would be 14.8 V.
The 14.8 V ...
- 11
0
votes
2
answers
1k
views
How to control a DC-DC buck converter by an MCU (ESP32) to choose between two fixed voltage outputs?
I made this post a day before about controlling a DC-DC buck converter’s output voltage with an ESP32 DAC output.
Is it possible to control a Dc Dc buck converter output voltage by the DAC of an Esp32?...
- 567
2
votes
1
answer
2k
views
Is it possible to control a DC/DC buck converter's output voltage with the DAC of an ESP32?
I came across this question here:
MCU 'remote control' of DC-DC converter's Vout adjustment potentiometer
It is about controlling the output voltage of a DC/DC buck converter by injecting voltage into ...
- 567
1
vote
1
answer
868
views
Powering ESP32S Node MCU through Vin vs USB
I am having a situation with my ESP32S Node MCU that I can't figure out.
I uploaded a sketch to my MCU that will blink the blue LED connected to GPIO 2 every x number of seconds.
Here is the sketch
<...
- 159
0
votes
2
answers
136
views
Buck converter and resistive wire
I'd like to ask about my circuit.
It is a variable buck converter operated by an Arduino. At the end the 22 Ω resistor is resistive wire supposed to get hot because of the current.
One thing that ...
- 13
-1
votes
2
answers
77
views
12 V, 3 A to buck converter or linear voltage regulator for Arduino and other components?
I'm using a 12 V, 3 A wall charger to supply a project:
The project includes a motor (which needs 12 V, 3 A), an Arduino, a servo, and some other components. Since I don't want to fry my electronics, ...
- 21
3
votes
1
answer
82
views
LM22673 diode selection
I'm fairly new to electronics, and in my project I'm using LM22673 as Buck Converter in this Diode selection parts this is given which is confusing for me.
as
Ultra-fast diodes can switch very fast, ...
- 176
0
votes
0
answers
83
views
Power issue with NRF24LO1 and ATtiny44
I am super frustrated with my NRF24LO1 module and ATtiny44. The thing is when it is connected to an Arduino board it works perfectly, but when I try powering up using battery the entire system halts.
...
0
votes
1
answer
137
views
Arduino grounding and protection in 12v system
I'm tinkering on my garage project, standard vehicle stuff - 12 V lead acid battery, 3-phase stator, reg/rec. I would like to put few additions to its circuit. Being a rookie, I'm not sure how to ...
- 53
0
votes
1
answer
180
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
0
votes
1
answer
268
views
How to switch between solar panel and battery in order to power supply load
I'm doing a charger from a solar panel for a Cubesat project for my university.
I made the buck converter from a 20 V solar panel in order to charge the battery. This works well with Arduino, where I ...
0
votes
0
answers
144
views
4 channel relay with Arduino issue, probably simple but need help
This is my equipment:
12V DC (10A) PSU powering Arduino Uno then 2 x Buck converters (3A) (one powers two solenoids, set at 9V, the other powers a 3.5V motor) connected to a 4-channel relay (active ...
1
vote
2
answers
319
views
Idiomatic way to control output voltage of buck/boost converters using microcontroller
I'm trying to design an appliance that efficiently regulates power to some Peltier elements.
The manufacturer states that optimally, you should drive these with regulated voltage and not PWM. They ...
- 171