4017 IC
Hobby project = I have a sequence blinker in mind and have the 555 IC, and need to get a 4017 controller, Also wanted are 12v "micro-lights" to power the project or LED's that broadcast light instead...
View ArticleESP32 & BitVoicer Speech Recognition
So recently I've decided to get back to trying to make a WiFi-controlled speech recognition device. I was finally able to figure out how to connect an ESP32 to WiFi, but I now struggle with getting...
View ArticleHelp please with MPLAB X
I imported my project from MPLAB 8.92 into MPLAB X successfully but can't simulate it like I do with 8.92. The tutorial indicates that I need a device such as PIC KIT3 between the computer & the...
View ArticleVerilog code for 16 bit Brent kung adder
Hii Brent Kung adder is a parallel prefix adder. Parallel prefix adder are high performance carry tree adder in which pre-computing of propagation and generation signal take place.Due to the complexity...
View ArticleRaspberry pi with 20MP camera compatibility
I have a project for school, where I wan't to capture a 20MP image with a Raspberry Pi. I have a minimal budget and I came accross this affordable 20MP camera. I also have plans to use it for future...
View ArticleMCP23017 with raspberry pi
Hi I have a raspberry pi with a MCP23017 to control a 16 channel relay board. My problem is that when everything starts up each MCP23017 pin is 0 and all the relays are on. But, I thought that a "0" is...
View ArticleHC-05 and Microcontroller
Hi everybody! I'm new in electronics, so my questions can be strange but I have to ask. I need to continuously send information from sensor to smartphone via Bluetooth. 1. I heard that if I take HC-05...
View ArticleHelp for ELF (extreme low frequency) design
I wanted to design circuit that outputs extreme low frequency, between 4hz and 10Khz. I want to use microprocessor. I have found some microprocessors that outputs that kind of frequency. The problem is...
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How to monitor an actuator's feedback line from a microcontroller?
the AG-020-B electric actuator is controlled from a microcontroller. Terminal 1 is connected to the DC PSU GND, Terminal 2 is connected to the +24VDC via a high side Power MOSFET(TPS22810) as shown...
View Article12f675 delay issue
Having a problem with a delay_ two led's switch states after a short delay period when a button is pressed to start the sequence. When the sequence ends the program returns to begin ready fr next...
View ArticleIs it possible to use barometer module using UARTS?
Hello Guys, I have been working on a drone recently. Unfortunately my flight controller doesn't have barometer sensor in it and I want to do some altitude holding on the drone. Is it possible to...
View ArticleHow can one regulates DC voltage automatically to the voltage required by an...
How can one regulate the DC voltages from DC-DC inverter to the required voltages of the appliances using microcontroller? We are working on the implementation of DC-DC inverter that would power DC...
View Articlei++ and ++i operator
What is the difference between ++i and ++i, both are increment, but i am confused with their operations. any one kindly make me understand how they both works and what is the output, the output is same...
View Articledesigning a verilog code for and 8-bit brent kung adder
designing a verilog code for and 8-bit brent kung adder and using this we need to design a baugh-whooley multiplier.
View ArticleCD4081BE Troubles
Hello I am not new to electronics but new to ICs and am trying to hook up this CD4081BE (texas instruments) 2 input logic gate to 6 volts and looking at the low-resolution datasheet (Here) is hard to...
View ArticleApp to control ESP8266
Good Evening, Is there anyone here who has created an app that can communicate with esp8266. I am looking software tool to create App to control consumer device such as fan, light's It would be batter...
View ArticleDifference between union and structure
I've been searching on internet and trying to understand how union is different then structure in c language structure is use to hold different type of data type Code: #include <stdio.h> struct...
View ArticleCan 1 Raspberry Pi 2 Run Two Arduino Mega using USB?
Hello, I am trying to run 2 Arduino Mega from two USB ports of my Raspberry Pi 2 and use it on my project. I am providing a 5V 3A continuous and 5A peak Regulated Supply to power up my Raspberry Pi 2....
View ArticleWhat type of voltage regulators to use for IoT
Hello Guys, I am trying to run bunch of relays, two arduino megas and one raspberry pi for one of my IoT home automation project. Not really sure what type of voltage regulators or any other voltage...
View ArticleHow to wire up an Atmega32u4
I'm designing a keyboard PCB, and I need to use a microcontroller to send data over a micro-USB port. I've picked the Atmega32u4. Now, I'm not entirely sure how to wire it up. I've attached what I've...
View ArticleHow to measure DC precision Volt+Amp using microcontroller?
Hello Guys, For my home automation project I am trying to implement a new feature to the setup. I want to measure the IoT system's dc voltages and currents at certain points accurately using arduino,...
View ArticleJust a quick check of my circuit
View attachment 43401 Here's a circuit I've came up with for my keyboard. Before I go any further, can anyone see any obvious mistakes? I'm most worried about the crystal, since most of the schematics...
View ArticleClocking an 8049 Microcontroller with Ceramic Resonator
Hello, I'm working with a circuit that uses an old NEC D80C49C 028 microcontroller, and nothing connected to it seems to function. It appears that I'm not seeing any clock signal on either of the XTAL...
View ArticleDSO oscilloscope with STM32
Hi, I have compiled a source code for DSO oscilloscope with STM32f4 discovery board. and i used a 7inch color lcd with 50 pin interface via a ssd1963 driver board. The source code is from this...
View ArticleMy CPU Design Update Video: Hardware User Stack For Easy Subroutine Parameter...
Here's my latest video in my CPU design Logisim series. I added a hardware user stack to make subroutine parameter passing, local variables, and recursion easier (in addition to my previous hardware...
View ArticlePrinting on cartoon box with industrial printer
I am looking advice on project, I want to print data on cartoon box automatically As I know we can set automation with microcontroller, PC and I’m not about PLC Which is best option microcontroller...
View ArticleProgramming languages and MC selection.
Hello friends. I am new in the world of Microcontrollers. I want to learn a programming language and build a few projects i have in mind. I only know very little Picaxe BASIC language since i have used...
View ArticleHave a 3D model street and building. My Model Car passes by and an LED lights...
Please Help, So I have a 3D-Model house made out of cardboard and there's a street as well (See Attachment). I have (3) Cars all different sizes truck etc. When I roll the car down the street I want...
View ArticleAbout PIC18F4550 programming
Hi, I have designed a PCB to program pic18f4550 controller IC. I am using pickit3 to program the pic18f chip. I can't able to programm the pic18f chip and I am getting the error that " 0x0 target...
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Microcontroller LED project.
Hello. I'm making a sewable electronics project. I originally intended to use a board based on ATTiny 85, but I've run out of practical ways to drive them considering the pin amount. It's to be fitted...
View Article16 x 2 alphanumeric LCD display is not working
Hi, I have successfully tested the 16x4 LCD display with my C code. I was trying to use the same code for 16x2 LCD display and it is not working. I am using same hardware for 16x2 and 16x4 LCD display....
View ArticleUsing ramps1.4 as generic stepper interface
Hello everyone, I'm excited to be part of forum as it looks like I will be doing more, and more electronic oriented projects in the future! Anyways I have an extra arduino mega, and ramps board with...
View ArticleAny through-hole microcontrollers which are programmable via USB?
I've recently came across the Atmega32u4 which is a very nice microcontroller. The thing I like most about it is the fact that it can be programmed directly over a USB connection, by wiring it up in a...
View ArticleWill the Arduino softwareSerial and Servo libraries produce interrupt clashes?
Hi All, i'm panning a project using the arduino uno which i own. I would need to control servos and have an additional UART serial port. I am aware that this is easy enough to do with the software...
View ArticleSending MIDI signals via PIC's Usart module [SOLVED]
Hi. I'm trying to send MIDI signal from a PIC microcontroller to plug any equipment to a DIN socket. If anybody have ever done this, i'd like some informations about the way to do this. I have a 3 pin...
View ArticleAI Thinker A9G Module IDE support
Hello sir, i am looking for the support of libraries for AI Thinker A9G(GPS/GPRS) Module with any open source IDE. So that we can send normal AT Commands through that library functions and retrieve the...
View ArticleLCD Screen for raspberry pi 3 & its Configuration
I have an old 15" LCD screen salvaged from an IBM R51 Thinkpad,which I have connected to my r Raspberry Pi3 unit to work as a monitor using a LVDS micocontroller board procured through eBay. Two...
View ArticleSuggestion to send wireless Temperature sensor data to google spreadsheets
Hello, how can we connect the wireless temperature sensors with Google Sheets? I am trying to synchronize the sensor data to google sheets but don't know how to use script editor any suggestion on this...
View ArticleNeed help with high frequency switching solution
I am creating a pulse generator. The requirement calls for a switch to be closed for 100ns, and open for for the remainder of a 500us cycle. The sampling rate of the transducer being driven by the...
View ArticleUnable to get solenoid controlled by Arduino to work anymore
Hi. I’m having trouble setting up a solenoid water valve controlled by an Arduino. I am following the guide here https://www.bc-robotics.com/tutorials/controlling-a-solenoid-valve-with-arduino/ Except...
View ArticleGarage door opener
I have an electrically operated garage door which I would like to connect to the internet so it can be remotely operated. In the control box there are labelled connectors for connecting push buttons:...
View ArticleFlash varification error for atmega128
Hi, I have designed a atmega128 based board. I am programming the chip using avrdude. Previously I was able to programm the chip without any error. Currently I am getting an error of " flash...
View ArticleArduino LED help
Hi I would like to know how to run 100 LED bulb from Arduno Uno board.. I wrote program to Arduno Uno for get 5 out put from board. it's working properly. when I connect C828 And D400 transistar as...
View ArticleChoosing a 32 Bit MCU
Ok so I know this is a very subjective topic and probably one that has been discussed at length. But I have a few (hopefully) more specific questions. A bit of background first. I have been designing...
View ArticleAVR-ASM Set/Clear Bit Routines
Toggling bits is pretty straight forward with an 8-bit AVR with a priori knowledge of the the particular bit to be toggled, especially if the bit to be toggled is in the address range of $20 to $3F...
View ArticleHelp with Arduino Serial communication.
Dear friends. I am working on a project where an arduino uno and a GPS receiver are involved. The gps unit transmitts serial data NMEA. The data string on Hyperterminal looks like this :...
View ArticleAnyone know of any microcontrollers which can communicate via radio?
I'm designing a drone, and I'm looking for a cool microcontroller to use for the main controlling. I want to control the drone via radio commands so that I can control it from a fairly long way away....
View ArticleLCD DISPLAY 20 x 2 Cursor Issue
I am familiar in 16x2 LCD Display. Now i changing LCD Display from 16x2 to 20x2.Characters are displaying fine but, I am facing some problems are following:- 1. In 16 x 2 LCD Display if i use 0x80...
View ArticleSending sms with microcontroller
Hello , I'm new here and new to programming. I want to send sms using pic16f690 , the idea is to make it send sms when a particular situation occur e.g when a liquid get to a particular level or mass...
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