NodeMCU reseting after 6 hours
Hi, I'm in a project with my nodemcu (ESP-12), it has 3 sensor (a DHT-22, a MQ-2 and a k thermocouple) and a spi oled display. Every minute it reads the sensors and sends to a server. It works fine,...
View ArticleMolex microSD connector
Hey everyone, This might be a very simple question but I'm pretty stuck. Googling around has confused me more. So I'll explain how I plan on connecting this and maybe get a bit of insight from everyone...
View ArticleAutomatic Door Lock System
Hi all Recently I went to company for interview. I saw there that everyone had a card. They kept that card in front of the door and then the door was open. The person who did not have the card could...
View ArticleDetermine wind direction by using PIC16F877A
My project is to determine the wind direction which are N,NE,E,SE,S,SW,W,NW by using 3 IR sensor,S,SI and SZ. The IR sensor is to check whether there are input or not. There are 3 LED, L,LI and LZ....
View ArticleGetting error in software
Code (C): void fnCalc_Disp_pH (int itempe) { Â Â Â Â // Now Calc ph ! Â Â Â Â fnADCInit(5,'h'); Â Â Â Â Â float fpHread=0; Â Â Â Â Â for(char k=0;k<8;k++) Â Â Â Â {...
View ArticleADS127L01 24 Bit, 128KSps, ADC with ESP8266; node MCU
Hello all, I am working on a project where I need to sample the TI ADS127L01 at 128KSps with 24 bit resolution. I've already designed the low noise front end, most of the power supply (need to finalize...
View ArticleGetting error in this function
void fnCalc_Disp_pH (int itempe) { // Now Calc ph ! fnADCInit(5,'h'); float fpHread=0; for(char k=0;k<8;k++) { fpHread=fpHread+fnADCConv1024Avg(); // before going any further,check if the mode flag...
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ESP-01 (ESP8266) and programmer incorrectly installed
You have helped me in the past to program an ESP8266. Now I have another OS Ubuntu 11 on an old laptop but with USB. I downloaded the latest version of Arduino IDE and installed it. I have this...
View ArticleSPI Implementation in 'C' language for Freescale MC56F82748
Dear Members, I have to implement SPI communication between a 8-bit PIC and freescale microcontroller MC56F82748 in 'C' language. PIC is a master and freescale is slave. PIC clock rate is 16 MHZ. Slave...
View ArticleKali Linux SDR and GSM
I have a smart watch. I want to analyze GSM in my own call. See my signature website with my old phone. Please help me in this....... Now I am going to download Kali Linux first version..
View ArticleProteus 8.6 atmega32 TQFP wrong port numbers
I'm trying to use atmega32 tqfp in proteus . ports numbers are normal in DIP mode but does not change when i change PCB package to TQFP. so port numbers would be wrong if i use TQFP . I checked it for...
View ArticleFTDI USB to RS485 cable
Hi all, Recently I purchased 2 of FTDI USB-RS485-WE-1800-BT has an issue, not working as expected. When I used the cable to connect my computer and a device for communication, my computer received...
View ArticleReal time system
I do not understand difference between normal and real-time program. I do not understand when we will be use normal program and when will use real time program. I understand we write two types of...
View ArticleHow to setup Raspberry PI 3 board
I am looking help to setup raspberry pi 3 board. I bought a raspberry pi 3 board, I just wanted to work on it. I don't have a keyboard monitor and mouse. I have read it that we can connect the Pi...
View ArticleDimming LED's with no PWM pins from uC
Hi All I am looking for an IC/Circuit schematic, that enables control of two LED's allowing them to be dim in and out (i.e. create a "breathing effect"), but I do not have any spare PWM pins on the uC...
View ArticleInterfacing 79 GHZ radar with arduino
Hi folks. I just want to ask one thing that is it possible to interface a 79 GHz radar sensor with arduino for detecting stationary and moving objects thus calculating their speed and acceleration. If...
View ArticleWhat is real life example of linked list
Simply a list is a sequence of data, and linked list is a sequence of data linked with each other. linked list is a sequence of elements in which every element is linked to its next element. In terms...
View ArticleBasics of task scheduling system
Embedded system is the type of system that is design to perform one or multiple task's. These are the some example of tasks , I understand what is task in embedded system. I have been performed this...
View ArticlePWM in pic 16f877 problem
Hi everyone , i have a mini project with pic 16f877. i want to control the speed and direction of a stepper motor using PWM module in assembly language.i searched in the forum and i found some program...
View Article12F675 comparator question.
With Comparitor CM2:CM0 = 001, and TRISIO/GPIO2 set to output, shouldn't GP2 automatically toggle whenever comparitor toggles? Max.
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