Be sure to use the Arduino Stack Exchange for questions that are more Arduino and less electronics.
0
votes
0answers
5 views
BLDC Driver with Arduino without ESC , Error in final waveform
I am trying to implement the BLDC driver using Arduino and After Lot of hardware failure I tried to visualize the waveform and simulate envirnoment in proteus and observed that I have jittering in ...
1
vote
1answer
23 views
How does this design work?
I'm looking at the Adafruit Feather 32u4 schematic.
It auto-switches between battery and USB power. From looking at the schematic, when the USB power is not connected, the battery power VBAT goes ...
0
votes
0answers
10 views
Programmatically switch betwean ground, power, signal for input port
I have this idea on creating a Atmel-based board with PS/2 connector for testing of old keyboards.
So I'm looking for a way to assign 5V, ground or signal to each pin of the connector after board ...
0
votes
3answers
49 views
Need Circuit advise to drive high current loads
I need Some advise on the circuit I plan on building.
This circuit is to run any high current (Max. 100amps) device in my car. I want to use a high side mosfet to supply power to any field device. ...
0
votes
0answers
37 views
Arduino minimal power usage [migrated]
I know there is a lot on this subject on the net but i cant seem to be able to join the dots together.
I am trying to make sensor system than can run for as long as possible if not indefinitely using ...
2
votes
1answer
40 views
How to Raise and Lower an Object via Arduino/Photon
Completely new to anything dealing with hardware (Programmer person) and have no real clue as-to how I can accomplish what I want.
The goal is to be able to move an object up and down (Specifically ...
0
votes
0answers
10 views
connecting SIM900A GSM/GPRS module Arduino Mega [migrated]
i have bought following SIM900A GSM/GPRS module. I need to connect it with Arduino Mega. Can anyone answer me which pin i need to connect to Arduino??
1
vote
1answer
54 views
4-20mA Potentiometer to arduino questions
I've recently been messing around with the arduino uno and potentiometers. I got a potentiometer from where I work but im not sure how I should hook it up so I don't mess anything up! There are 3 ...
0
votes
5answers
83 views
Arduino power on button problem
I am trying to build a circuit that will allow my arduino board to be turned on by a button (switch). Much like a power button on PC. Here is my schematic.
In real life I used a phone charger ...
0
votes
1answer
47 views
Low standby power voltage regulator [on hold]
I am doing a project with Arduino pro and nrf24. I am trying to have the system having an as low as possible current draw. I have used most of the tricks in the book to get the power down using ...
0
votes
0answers
21 views
Xbee S1 transparent mode communication problem
Good morning all, I have recently bought two xbee series 1 modules as a way to learn the module, since I haven't used them before. Anyway, I got one USB connector (USB-TTL converter) and am connecting ...
0
votes
0answers
6 views
Arduino displaying same temperature over and over again [migrated]
I'm new to Arduino so im still getting used to it...ineed to read the temperature of temperature sensor in arduino. Whatever i do, it keeps displaying same temperature(don't even know if that's wrong, ...
0
votes
1answer
53 views
Why does SAM3x8e work only with Atmel-Ice programmer connected?
I have DIY sam3x8e pcb board based on schematics of Arduino Due. I can program it with Atmel-Ice (jtag connector) in Atmel Studio with basic serial transfer example and it works fine when the ...
-2
votes
1answer
26 views
Does the pwm pin on an lmd18200 have to be connected to a pwm pin?
I got an lmd18200 connected to an Arduino Uno. The pwm pin is connected to the 10 pin on the Arduino. Will this not work?
0
votes
0answers
9 views
serial does not name a type error [migrated]
I'm getting a serial does not name a type error when this program is compiled. I need for the 8 channels of voltage to be displayed. I'm sure its a simple fix, however I'm still learning Arduino ...
-6
votes
1answer
73 views
Rising edge detection in C [closed]
Why need to assign (1) to LastState1 if rising edge is alreay detected ? Why I can't just return 1 ? Thx for the answer.
...
-2
votes
2answers
92 views
PIR sensor always gives HIGH
This is my first time to use PIR (HC-SR501 ) . It's in repeat trigger model. But when I test the output of the PIR , it gives always HIGH .
I rotate sensitivity adjustment and time delay adjustment ...
0
votes
1answer
37 views
Interfacing Microphone amplifier with MATLAB A-weighting filter
I am working on a project that essentially would be used to measure the Noise produced by ceiling fans and regulate the speed if the noise interferes with speech levels.
For the first phase of this ...
-5
votes
1answer
36 views
sensor for line cutting detection [closed]
I am doing a project in which I want to create invisible beam. When this beam is cut buy any obstacle ,that sensor must sense that. Is there any sensor?
0
votes
0answers
39 views
Arduino light switch transformer
I'm building a light switch with an ATMega328 (Arduino) which needs 5v. The light switch will be integrated in the wall where a 220v power line is present. I would like to power the Arduino from ...
1
vote
0answers
48 views
Homemade shielding of a wire to a capacitive sensor
I'm using a capacitive sensor CAP1188 with Arduino, connecting 8 of its touch sensor inputs to 8 copper boards that I want to be the actual touch surfaces.
The wires to the sensor are quite long ...
0
votes
0answers
5 views
-2
votes
1answer
51 views
Connecting two 1.5-3V motors to a 9V battery
So I'm making an Arduino robot for a project that'll have two 1.5-3V variable voltage motors to run its wheels. I have been given a 9V battery in the kit, and I have been told that it's highly ...
-2
votes
0answers
46 views
Arduino components not working with external power supply [closed]
Got a project which works with a usb power supply to pc
Project is arduino with gprs module and pir sensor
Doesn't work on 4aa batteries in a power pack, need to work.
Have to present it in a week ...
0
votes
1answer
43 views
Universal Electronic Car Aerial [closed]
I was wondering if there anybody out there that might be able to help me. I am trying to control an electronic car aerial with an Arduino using Mosfet switches however the circuit I have built doesn't ...
-10
votes
0answers
55 views
Help me Project for electrical Engineer [closed]
Please give me an idea for electrical engineering project to my univarsity by arduino or rasppiry pi or UDOO robot or not robot .
-2
votes
0answers
18 views
Using SDA and SCL pins with Wireless Proto Shield on [closed]
I'm about to order bunch of Arduino Uno R3's, Wireless Prototype shields and Xbee's. I'm going to use this setup to get some data from humidity and temperature sensors, what I'm wondering about is ...
0
votes
1answer
58 views
Detecting a Objects in a Box
I want to build a device using an Arduino or similar that would allow me to detect when particular objects were in a box (things like a TV remote for example). My thought was that I could use rfid ...
1
vote
2answers
55 views
How to control a capacitive load using an Arduino Uno
I'm trying to control a liquid lens using an Arduino Uno, however, the lens driver I've been attempting to get hold of is no longer an option.
The lens needs up to 60Vrms in order to function, and ...
1
vote
1answer
33 views
Simulating a transmissive photo interrupter sensor with Arduino
First of all hello.
I find myself in trouble while trying to simulate the behaviour of a photo interrupter sensor by using Arduino Uno R3.
The idea is to get rid of the sensor and use Arduino to send ...
0
votes
1answer
51 views
Inconsistency/Differenct Voltage Each Output Op Amp LM324
I use Arduino Pin to make PWM and give input to Op Amp LM324.
I would like to know, why my op amp has difference output. I have gain 2x. I multiply input from 0-5 Volt to 0-10 Volt because the gain ...
1
vote
1answer
165 views
Stepper Motor works at 5v, driver explodes at 12v?
After i salvaged some stepper motors and read alot about them i finally decided to try them out... But before i did i asked:
Simple stepper motor circuit safe?
in the above question you can find ...
0
votes
0answers
44 views
When IMU moves in 2-D Plane (YZ), accelerometer measures acceleration in third axis (X axis) too?
I am trying to calculate position using accelerometer of MPU9250. I have connected the sensor with arduino UNO. Problem I am facing is:
I am moving my IMU in YZ plane but it accelerometer is ...
5
votes
1answer
77 views
I2C slave not acknowledging consistently
I'm trying to communicate with a Cypress CapSense module, model CY8CMBR3106S. During initial testing, I used Cypress's CY3240-I2USB USB-I2C bridge, which works perfectly. I then moved to an Arduino ...
0
votes
0answers
6 views
Do external battery packs need to connect to ground on the arduino? [migrated]
I am going to be controlling 2 servo motors with an arduino. I will use an external battery pack for power. Do I need to connect the negative of the battery to ground on the arduino? If I just use the ...
0
votes
0answers
9 views
Insufficient current through Adafruit Motor Shield [migrated]
I am currently using the Adafruit Motor Shield in conjunction with an Arduino Motor Shield to control two 7.2V DC Motors. The DC Motors are being powered by a 7.2V, 3000 mAh Nimh battery. When the two ...
0
votes
0answers
52 views
Arduino resets randomly while driving Servo motors [closed]
I am using an arduino UNO, and driving 3 servo motors using it.
I have two different 5V supplies for the arduino (1A) and the Servo motors (2A).
This is the problem I am facing : the Arduino ...
0
votes
2answers
84 views
current sensor on arduino inaccurate at zero Load [closed]
I am currently making a power meter and used a Current sensor (SCT013 30A/1V) from yhdc.com. Every thing went fine especially the circuitry following the tutorial from ( ...
0
votes
0answers
6 views
Trying to verify that Arduino Pro Micro ISP is working [migrated]
I'm trying to program an Arduino Pro Micro with another Arduino Pro Micro. The purpose is to verify that I can use this Pro Micro board reliably as an ISP to program another Arduino device that does ...
0
votes
1answer
105 views
Magnetic Levitation Using Linear Hall Effect Sensors
I am doing a project of magnetic levitation like this.
I have two linear hall sensors which will give me the position of levitating magnet. I have set a specific position of magnetic object by ...
0
votes
2answers
52 views
signal conditioning 0 to (-40) volt to 0-5 volt, arduino
I want to convert my 0 to (-40 )v signal to be 0-5 volt so that i can measure it using arduino,
i want to attenuate the signal first by the factor of 8 and then shift it up by the arduino 5 volt. ...
0
votes
0answers
26 views
arduino - Receiving IR commands using a photodiode
As I was experimenting with an IR receiver (the ones with 3 pins), I accidentally released some magic smoke when I shorted data with VCC. Unfortunately, that was my last receiver and the only ...
0
votes
2answers
89 views
smooth a DC motor movement
I have a DC motor (controlled by an arduino MEGA) and I plan to move some 3D Printed gears and a pulley.
I have a problem with the belt jerking when power is applied to the motor through the arduino ...
0
votes
0answers
15 views
Arduino: How to get the board type in code [migrated]
I want to write a sketch that can be compiled on different Arduino boards.
I want to display on the PC which board is currently connected.
Therefore I need the board that has been selected when the ...
0
votes
1answer
61 views
Vibrating bracelet controlled from cell phone [closed]
I was inspired by this project: How do I build a bracelet that vibrates once every n minutes? but I want to take it a step further.
The main idea is creating a vibrating bracelet that is controlled ...
3
votes
2answers
59 views
Reading the voltage of an energy harvesting coil using Arduino ADC
Being developed by us is a kinetic energy harvester that harvests energy as its magnets move through a coil. It is our goal to measure the voltage across the coil when the real system is being moved ...
1
vote
0answers
65 views
Arduino: Measuring Current, Voltage + using the 5V and GND pins
I am new to the Arduino world and I don't wanna destory my brand-new Arduino, so I am asking here first. Basically what I am doing for a school project is creating a circuit that will measure current ...
0
votes
0answers
7 views
GPS Receiver SKG13BL + Arduino - Having trouble receiving data [migrated]
Here is my setup:
I'm trying to read the GPS data from SKG13BL which is connected to Aruduino UNO
The GPS seems to be working fine as I could see the green status light blinks after a while (I think ...
0
votes
3answers
85 views
High Power LED Strobe making a Whining Noise when powered by a PWM signal
I am trying to control/fade a couple of High Power LEDs, these are basically 12V 18W LEDs inside a nice package.
I want to use an Arduino and a N-Channel MOSFET to adjust the brightness.
I tested ...
0
votes
1answer
49 views
Will this Solar-Electric hybrid circuit work?
Would the circuit above works?
I'm trying to build a self sustaining solar powered Arduino controlled plant watering system. Since I'm using an electronic valve and not a pump, I'll assume it ...
