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0
votes
1answer
19 views

DC-to-DC voltage booster mosfet heat problem

I'm tying to understand boost and buck converter designs. Recently I made a prototype of a simple boost converter, used this as a reference. Used parts are as follows: Transistor - IRF3205 Diode - ...
1
vote
2answers
36 views

What is the fastest and easiest way to transmit arduino's sensor data to a PC wirelessly

I have a specific problem : I'm working on a testing platform. It has to be absolutely isolated, so I cannot wire it back to my PC. I again reiterate it. There is no way to wire it to my PC. IT HAS ...
0
votes
1answer
28 views

Reducing signal noise arduino to simulink analog read

I'm using an op amp to amplify the input of a pressure sensor from milli volt to volts using with arduino. Both the amp and the sensor are externally powered using a DC power supply. I'm trying to ...
0
votes
1answer
53 views

how to communicate between 3 devices

i want to communicate between uno, mega and netduino, which protocol should i use i want the uno and mega to send information to the netduino which mean that i don't need duplex connection which mean ...
1
vote
1answer
42 views

Best Header for Arduino Nano

I would like to be able to create permanent projects with my arduino Nano but be able to remove the nano in order to use it in other projects. The arduino Nano has 30 pins so I would be looking for ...
0
votes
0answers
15 views

Servotimer2.h is not recognised as a library by arduino uno [migrated]

I'm doing a project for school with an arduino uno. I want to control a motor using a RF-module as remote control. I need the library Virtualwire.h to use the RF-module and the library Servo.h to ...
0
votes
0answers
10 views

Accel Stepper help, stepper not going backwards [migrated]

So my question is that I am trying to use a arduino library called Accel Stepper to control a stepper motor, I made code that makes the stepper motor move one rev clockwise and then one rev counter ...
2
votes
4answers
217 views

LDO or Switching for 24V Input, 5V Output

I have a 24VDC supply that needs to be regulated down to 5VDC to power an Arduino Mega and a XBee Series 2 module. How would you choose between a Switching Regulator (LM2576T) and a LDO Regulator ...
-8
votes
0answers
76 views

Analogic Audio via Arduino [on hold]

I need to make a project with Arduino. I would know how take an analogic signal from a Arduino's shield (if exist) and send via wireless. Sorry for question I am new. Thanks for answers.
0
votes
1answer
32 views

ic relay.. is there any delay for the responz of <İC insıde the circuit

Regarding SPDT ic relay TS5A3157. Do we have a delay responz inside the İc/ do we have a click sound. Because im startıng for a new project that can switch wireless, bluetooth or ir. What i need on my ...
0
votes
2answers
43 views

Reading a 1.2V-8.8V Signal into a 5V Arduino Input

An analog DC signal that ranges from 1.2V to 8.8V (from a thermocouple amplifier) is to be read from a input pin on the Arduino that reads 0V to 5V. Other that using a potential divider consisting of ...
0
votes
0answers
15 views

Circuit modification of OSBee shield for Arduino

I purchased OSBee shield board to control 24V Solenoid Valve. It utilized 5V external power to charge a capacitor and then release charge to open/close solenoid valve. However, I found sometimes it ...
1
vote
0answers
11 views

Is it possible to detect host usb device connected to arduino? and how? [migrated]

let's say that I've connected an arduino uno to a pc, or to a mobile phone via usb .. how can I detect the device type and the running operation system if it's possible?
0
votes
0answers
26 views

Control Output Power using PWM from Arduino

I am trying to make a simple control loop to power up a lamp and with that control the temperature, for that I am using an Arduino as microcontroller. The lamp I am using is a DC 12V 20W, so we ...
0
votes
1answer
57 views

Fixing a noisy I2C bus

I'm trying to get an I2C bus working but there's a ton of noise and I don't really know what's causing it. The circuit is pretty simple, an ITG-3200 and an Arduino DUE. Here is the problem: As you ...
0
votes
0answers
10 views

Turning all 35 leds on sequentially with MM5451 [migrated]

I've been struggling for a long time trying to get the MM5451 chip to light up all 35 leds sequentially without any luck. i've had intermittent help from the arudino forum, someone on youtube, and ...
0
votes
0answers
21 views

Stop timer set new value and start again AVR (Interrupt)

I have AVR MCU. I am playing with timer now. What I need ? I have timer counting up with some frequency. In each interrupt I am incrementing variable, and somewhere I need to check value of this ...
-1
votes
0answers
11 views

Using the MFRC522 RFID read with an Attiny84?

I'm trying to figure out how to run the MFRC522 RFID reader with an Attiny84. The library that is out for the reader is not compatible with the attiny series. I'm also seeing that the arduino port to ...
10
votes
3answers
719 views

Arduino resetting/hanging due to sparks in ac line

This is the PCB design of the project I have been working on recently (my first pcb design). The idea is to control ac appliances (fans, bulbs etc) without relays. I am using triacs which are ...
0
votes
1answer
43 views

closing a circuit programatically if ground can't be interrupted

I need to be able to "push" a button on a control panel using python and an arduino board. My problem here is that the button in question, when depressed, sends 16 vdc to an outgoing wire that ...
3
votes
4answers
224 views

Semaphore using one microcontroller pin

I'm trying to make a semaphore using to LEDs green and red, controlled by one arduino pin. Idea is when pin is low red LED is on and green LED is off, when pin is up green LED is on and red LED is ...
-1
votes
0answers
37 views

What circuit is used to power up a 3W LED light

What circuit should I use to power up a 3W common anode RGB LED direct from mains (220V)? I am working on a 3W rgb led which has 3 diodes connected in parallel with their + terminal as common anode. ...
1
vote
1answer
90 views

Using an FPGA over an Arduino

Having read this excellent answer on FPGA's vs Microcontrollers I have a few queries. I recently completed a project that utilised reflectance sensors. Simply put, it reads the reflectance by ...
0
votes
1answer
28 views

DC Motors Power Supply Connection

I am currently working on a project using Arduino UNO and two 3 volts DC motors. I chose a 9 V Goldtop battery to power my Arduino. The two motors draw voltage through the 3.3 V pin in the Arduino. ...
0
votes
0answers
25 views

arduino detech signal from bike pickup coil

I want use the arduino detech signal from bike pickup coil for calculate rpm and delay ignition. Should I use a good circuit? I just started the electronic Thank you
-1
votes
0answers
21 views

AD7745/6 capacitance measurement

I am going to use AD7746 to measure capacitor in ranged 0 - 4pF. Can the resolution be 0.04fF? Finally, I would like to input the result to arduino uno.
-3
votes
0answers
32 views

Building a code for circuit of an arduino based BMI calculator [closed]

I'm very new to Robotics and as a part of my project in first year.. I'm building up a BMI calculator which uses the following: Load Cell: LoadMaster SPL149 80 operates in 0-9v (Range upto 80 kgs); ...
0
votes
0answers
26 views

Problems with L293D [migrated]

The motor are not rotating in the above circuit . Or rather the Voltage between the two Motor Terminal is zero. I have checked the Pin 10 & 11 and Pin 12 & 13. They are fine and produces ...
0
votes
0answers
11 views

Arduino Uno + 2 Monster Motor Shields [migrated]

I've got an Arduino Uno and two Sparkun's Monster Motor Shields. The aim is to control 4 motors. There is no problem to control 2 DC motors with single motor shield. There's a manual how to do it ...
0
votes
2answers
89 views

Circuit that could replace DSO [on hold]

Currently I have a Pipeline leakage detection system the concept is that we are using a striker to strike the pipe at the generator side and receive the sound waves at the receiver side both separated ...
-3
votes
2answers
54 views

Problem connecting motor to arduino

I am trying to connect a DC motor to an arduino. When I set it up like in the first image below, it works and the motor rotates. However, when I set it up in the second image it does not work, am I ...
1
vote
1answer
68 views

Additional TX and RX pins for FT232RL Microcontroller Interface

I'm designing a board that needs to be programmable via USB and external TX/RX pins. I decided to use FT232RL ( http://www.sparkfun.com/datasheets/DevTools/Arduino/FTDI%20Basic-v21-5V.pdf ) for the ...
1
vote
1answer
33 views

Basic Robotics Help. Variable motor speed control by ultrasonic sensor input on arduino

First, thank you for taking the time to read my post. I am attempting to use an ultrasonic sensor to control a DC motor using the PWM output of an arduino. Fairly simple, I know, but I'm just a ...
0
votes
0answers
24 views

Fuse header for GPIO pins?

I have recently gained interest in electronics & tinker with Arduino & Raspberry Pi. But I made some big mistakes & ended up frying my board with mains AC supplied to the GPIO :( (yes, I ...
0
votes
0answers
6 views

How to send the RC522 RFID reader into sleep mode?

I'm trying to get the power consumption of a MFRC522 RFID module down, currently while running it consumes about 4mA. There should be a way to put it into sleep mode, I just can't find any ...
0
votes
0answers
28 views

How to get change in position and rotation from gyroscope and accelerometer?

i have a 6-axis accelerometer and gyroscope MPU6050 . i'm using simulink with arduino to read to raw data from the mpu . I intend to measure something that only moves in the X and Z axis. I've heard ...
-1
votes
0answers
14 views

can I use same zigbee shield to arduino for 2.4GHz and 900MHz XBEE? [migrated]

I have Xbee shield tested on arduino Uno by 2.4GHz Xbee by Digi Internationals.Now I want to buy 900Mhz Xbee.Does there any change in shield or in program. There is note on Sparkfun about "XBee ...
0
votes
0answers
34 views

Modify the call stack of interrupts on Arduino [migrated]

I'm working with Arduino's libraries. And my interest in the possibility to change the call stack of the SPI interrupt, this because I want: after the interrupt happen, the program could jump to other ...
0
votes
0answers
14 views

internet source for arduino web server [migrated]

Few days back I started a project to interface ardunio with the ENC28J60 Ethernet shield. I am totally new to the world of electronics and i got the code for controlling an LED and reading an analog ...
0
votes
0answers
44 views

Arduino voltage drop while communicating with another Arduino [migrated]

I have an Arduino Uno rev 3 and an Arduino Nano in my Setup. I want to create a proof of concept, where one Arduino triggers the other via the Digital IOs. Arduino 1 sets a blinking signal on a ...
0
votes
1answer
30 views

Arduino to read file data from SD storage board, and PC user to update same file via usb cable as needed

I have a project where in the finished product (sketch loaded to Arduino and it's running on its own), Arduino needs to regularly read data from a text file stored on a SPI Micro SD storage board (the ...
2
votes
1answer
69 views

How to shield for electromagnetic interference (DIY level)?

I am building an optical rotation encoder for my "autonomous robot" (a LED pointing to a photodiode that gets interrupted as the axis rotates). My issue is that at the voltage that I am using the ...
0
votes
1answer
30 views

Providing external voltage to a motor connected to arduino

I am a noob in electronics . I am just learning it bit by bit. The below is my connection. As you can see pin 13 is connected to one terminal of the motor and the other terminal of the motor is ...
0
votes
1answer
22 views

Using the ACS712 and Arduino to measure RMS Current (220v mains)

I bought the common board that is based on ACS712 . My objective is to measure the current (and if possible, also the voltage) of my Mains WITHOUT any additional circuitry . After doing a bit of ...
0
votes
0answers
31 views

Crash dumping and signal not acquiring by VK16E GPS module

I am new to gps. I have bought VK16E gps module to interface it with Arduino Uno. But before that some problems occured and I am still unable to resolve them. I am using Windows 7 (64-bit) and ...
0
votes
0answers
39 views

How to read inverted serial using Teensy LC?

I'm trying to read inverted serial data coming in from FrSky DJT module. I managed to read it using SoftSerial on another Arduino board and FTDI USB dongle (after configuring it co accept inverted ...
0
votes
2answers
78 views

5v piezo (micropump) with arduino

edit -added pin 9 as output in setup and now HIGH/LOW code works. -When the pump is set to LOW it turns on, when it goes HIGH it is disabled. So when I plug the arduino in, by default the pump turns ...
0
votes
1answer
54 views

rasperry pi with i2c arduino leonardo

I'd like to connect a Raspberry Pi A+ with an Arduino leonardo. I'd like the rapsi to be able to upload HID sketches on the arduino.Then I'd like the arduino to run the sketch over the USB interface ...
0
votes
3answers
85 views

Is there such a thing as a pin (or pogo pin) clamp for testing?

I'm an amateur tinkerer of electronic components, and was wondering if a product like I'm about to describe exists for testing components. Say you have an arduino pro mini board. You want to access ...
-3
votes
0answers
52 views

Running a toy motor using Arduino

I have setup a circuit to run a toy motor using Arduino. The fritzing diagram link is below. Motor starts spinning but only after I manually rotate the axis. Could it be because there is not ample ...