Questions tagged [hardware]

The physical circuitry and other components of a machine or device. This is distinct from the program code running on a device, which may be called software or firmware.

43 questions with no upvoted or accepted answers
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Can I use ATtiny48 as a board in Arduino?

I have seen people using ATtiny45 and other boards and there are hardware configurations files for them. Can we use ATtiny48 as a processor for Arduino? If so where can I get a boards.txt file that ...
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42 views

Real Time clock module error-DS3231

This is not a code error I have been using DS3231 RTC module with battery. When I bought this module It worked perfectly now when I get it to use, The time is running perfectly. when I set the current ...
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Change the mac address on an HC-05

So I tried to save a little money and bought (5) HC-05 bluetooth modules off of our good buddy eBay. When the modules arrived, as I was testing and setting up for my project (2 nano's connected via ...
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Need help with Arduino Love-O-Meter

not sure if this is the right place to post, but basically I am trying to make a Love-O-Meter, similar to the Arduino project example. However, my method of determining the score is different. ...
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433 views

How can I connect a Fona to an Adafruit feather?

I have this adafruit-feather-huzzah-esp8266: https://learn.adafruit.com/adafruit-feather-huzzah-esp8266/pinouts and I want to connect a Fona board. But I am not certain which pins have the ...
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311 views

door protector using arduino uno and GSM sim800 module

Please check the arduino program given below and help me to find out error. The program is for following hardware. GSM 800 module Arduino Uno board Limit switch(2) We place two limit switch at main ...
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132 views

How to verify that my FTDI bridge for ESP8266 is communicating with my PC?

As I couldn't make my ESP8266 be programmed using an Arduino board as FTDI bridge, I decided to buy an FTDI232 board to upload code directly to ESP module via USB. However, when new I connected it to ...
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489 views

How to attach Arduino MKR1000 to a shield meant for Arduino UNO?

I have an Arduino MKR1000 and need to interface it to an Adafruit Music Maker shield, which has pinouts for an Arduino UNO. Maybe I'll have to attach female headers, and then jumper pins over. Which ...
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68 views

Serial Request error

I am working on arduino Uno board.I am trying to send request Serially from out Side using docklight.I am sending COmmand is request send every 5S to 10S and get response.When i tested this code with ...
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66 views

how to differentiate in code between Sangunio and Microduino core+

Sanguino and Microduino core+ both uses ATMEGA644PA. I need to write a piece of code in my library where I need to check what board has been selected. #elif defined(__AVR_ATmega1280__) || defined(...
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132 views

What is the Arduino Nano maximum wattage?

Hello, I am currently working on a DIY project and I would like to know the Maximum Wattage of a Arduino Nano with a ATmega328 processor. If anyone know what it is it would be a great help. Ricky
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Arduino TRE Release Date and Cost

I have been awaiting the release date for some time for the Arduino TRE. So, my question is simple does anyone know the release date or any hints about when it might come out? Also, what do you ...
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2k views

Unable to connect to Intel Edison Arduino kit

I just received my new Intel Edison with Arduino Breakout Kit and after hours trying to connec to it, I just can't. I connected two USB cables to my computer, the switch between the power suply and ...
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1k views

Driving stepper motors adafruit motor shield v2

I got an Arduino Uno Rev3 and Adafruits Motor Shield V2. I also got two RepRap stepper motors: Frame size 42 x 42mm - NEMA 17 1.8 degree step angle Length 47mm Holding torque 44 N.cm (4.4kg.cm, 62oz....
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405 views

Flame Sensors Problems

I am making a fire fighting robot and I need a sensor. I want the sensor detection range to be about 6m or 7m (about 18ft to 20ft). The question is which sensor should I choose to get that detection ...
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2k views

Sniffing Bluetooth Packets

I'm attempting to create something similar in nature to the Ubertooth one. I'd like to sniff Bluetooth packets using the Arduino. I've found a few nRF24L01+ wireless modules, which appear to operate ...
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14 views

APDS-9960 detected but not showing output on serial monitor

I just bought an APDS-9960 sensor yesterday and tried it out today using Sparkfun's example from its APDS-9960 lib, and the only thing it printed out was: "SparkFun APDS-9960 - ProximitySensor&...
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Adeept Arduino Mega 2560 isn't recognized

So recently, I purchased an Arduino Mega 2560 Kit from Amazon, which was customized from this company called Adeept. But when I tried to plug it into my computer, it didn't recognize it. This means my ...
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26 views

How to Adjust MQ131 Sensor?

The problem Hey. I'm trying to use the sensor Mq131 to measure some ozone data in a closed environment, but I'm having some bad time to adjust the trim in the sensor and get results in ppb. By ...
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77 views

I need an example of how to send AT COMMANDS to SIm7000E GPS+LTE module from ESP32 and reading those response in Serial monitor

Actually I need to make HTTPS post request using SIM7000 and ESP32 but the available libraries don't have a function for HTTPS post request, I wanna make this request using AT Commands. I need a ...
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39 views

HC-05 Stuck in slave loop mode (loopback)

got my HC-05 today and accidently set the AT+ROLE=2(slave loop) and now I can't get out of it! Anything I send it just resends it back to me, even commands like AT+RESET and AT+ORGL, they just get ...
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55 views

how to implement AES in LoRa Module with Hardware Flow control using ESP8266?

I am working on project where I have to do AES encryption of plain text received through normal UART port of ESP8266 create a cipher text and sending it to LoRa module (EByte E32 868T30D) through ...
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1answer
62 views

HTU21 on GY-21 breakout board I2C problem

I am interfacing the HTU21D sensor with my nodeMCU v3. All good! I managed to get some readings etc. But when I re-upload my code the device does not respond. If I remove the power supply from the pin ...
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44 views

Arduino Due 9-bit serial - Can core Due Libraries be modified to get this functionality similar to Mega and Uno?

Need help to see if I can get an Arduino due to receive and send 9-bit com as already implemented on AVRs like Uno, Mega and even teensy boards, by modifying hardware serial cores. Have not found any ...
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196 views

ESP8266 Loop cycle frequency gets decreased after WiFi got disabled

In a traditional scenario, after the setup() method we go to the loop() method of our sketch. You know, usually it gets executed probably 5-10 times in a second (or even more). I am now playing ...
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1answer
183 views

Connecting MPU6050 to Arduino Lilypad

To preface, I am very new to Arduino and I watched this video on YouTube. It shows how you can build a motion controlled car with Arduino and I decided to make this for my school project. One thing ...
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53 views

What can cause an Arduino to “disconnect” from Windows?

I bought a DFrobot Beetle and it worked fine for probably an hour, then it just stopped working with Windows. When I connect it to the computer I hear the "connect" sound, then within 5-7 seconds I ...
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1answer
69 views

No potential across output of H-bridge

I’m working on a robot with a club at my school. So far, our team has an H-bridge shield (https://www.freetronics.com.au/products/hbridge-dual-channel-h-bridge-motor-driver-shield#.WwI9omh_WEc) to ...
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61 views

Is there an easy way to connect and control 3 servos?

I need to connect and control three Parallax Standard Servos to an Arduino board, and apart from the USB connection, nothing else will be connected to the board. My predecessor used a setup of and ...
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2answers
733 views

Which sensor is best for obstacle detecting with retroreflector?

Distance is about 3m. IR or visible light - does not matter. It is possible that object/obstacle can be shiny, so for correct detection necessary large amount of reflected light. Maybe for this task ...
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2answers
86 views

How can I upload a sketch remotely from a distant location onto an arduino that is power by a battery

Of course after developing a success full embedded product the next step would be making upgrades to compete favorably with new products in the market. Well making upgrades would require making ...
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1answer
31 views

ledkeypad shield not responsive

I recently purchased several of the DFRobot ledkeypad shields: https://www.dfrobot.com/product-1407.html I have Arduino Leonardo (which also had some problems in the beginning, being recognized as ...
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1answer
139 views

AC Voltage Sensing using Arduino Uno

Is it possible to sense AC Voltage using analog input for Arduino Uno or can it only read DC? I mean I've tried connecting an AC voltage source to analog and I'm reading some numbers. However, I don'...
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2answers
50 views

Load Resistor Use for Voltage Sensing by Arduino

I connected a piezoelectric film to a Arduino Uno board via analog input. However, as I was getting very high voltage values (reaching 5 volts without much movement). Therefore, I added a 1 megaohm ...
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1answer
79 views

Can I put a resistor in the ground connection of my DHT22 sensor?

I'm building a project that uses a couple of Adafruit DTH22 temp/humidity sensors. (https://www.adafruit.com/product/385) I have them wired into my project box through 3.5mm mini plugs (The kind that ...
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1answer
306 views

Getting at the PS_ON pin on a RAMPS1.4 mounted to a Mega

Got it! Check end of post for solution. I'm running a Mega 2560 with a RAMPS 1.4 Shield which is usually used for 3D printing applications. For my use case I only want to get at the stepper motor ...
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1answer
1k views

Pulse counter to measure flow-rate: 0 Pulse issues

I am using a Netafim M-Series flow meter interfaced with a UC-32 Arduino. The goal of this is to create a pulse counter than in turn will allow us to determine flow rate in the meter. (1 US gallon per ...
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2answers
2k views

The fastest way to read out a digital pin state in an Arduino Due

What is the fastest way to read a digital pin status in an Arduino Due? Is it possible to achieve speed in the Nanosecond area? With which type of code I can achieve this? Edit: This question is not ...
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1answer
38 views

Assembled redboard PTH kit, when I turn it on the led flashes increasingly fast and stops

I assembled the following sparkfun redboard: https://www.sparkfun.com/products/retired/10776 When I plug the board in it start to blink but increasingly fast until the LED stops. I'm very new to ...
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1answer
137 views

What's Happened with my Arduino?

I am in a First Year Design class, and we are supposed to be making an autonomous robot. After hooking up some wind speed and temperature sensors to calibrate, I plugged in to my laptop (we have 2 ...
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1answer
1k views

USB Device not Recognised - Custom Wattuino Nanite 841

What I have done: I have made a custom Nanite 841 which uses an ATTINY841 microcontroller. I have used the schematics from Wattuino to design my circuit, my PCB was made using a router with all ...
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1answer
229 views

Are there any KL03 “arduinos”?

I have been trying to find any Arduino or similar prototyping board that uses this MCU http://www.pcmag.com/article2/0,2817,2453987,00.asp But the smallest and more robust ones I have been able to ...
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2answers
155 views

Industry Standard for Single-Board Computers?

Do Arduinos, or any other single-board computer, come in any sort of industry-standard form factor? I'm trying to sell management on using Arduino, but they are stuck on the question "what if Arduino ...