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PIC micro controller oscillator frequency
Hello guys The internal clock (Q1–Q4) of PIC Micro controller runs at a quarter of the oscillator frequency (FOSC/4). My question is if i divide the frequency with 4 Then the timer period of each clock...
View ArticleHello, how can i send signal from fm radio to arduino
Hello, i already finish my fm receiver, but now i want to connect to arduino, i dont know how to do it? i am new to Arduino thnx
View ArticleAVR Timer: CTC mode
Hello, I learning AVR programming, I have made a code to toggle AVR pin at an interval using interrupts Here' the code Code (Text): #include <avr/io.h> #include <avr/interrupt.h> //...
View ArticleDesign relay circuit which can be control by wireless temperature sensor...
Hi, I have ordered the wireless temperature sensor reading the sensor at longer range but I need some suggestion to design a relay circuit which will be operated by wireless zigbee device. I need to...
View ArticlePIC16F18446 Xpress board PWM generation
I received a free PIC16F18446 Xpress board and I tested it by blinking LED and toggling GPIOs. My application needs 4 PWMs for SPWM generation of a single phase AC motor. Out of 4 PWMs 2 are SPWM which...
View ArticleCompass module XYZ analysis
Hi, I'm programming a PIC 18L4620 with a compass module AK8963C using Oshonsoft (BASIC) I have the PIC READing the module and outputting serial DATA. (see txt) I have programs Magmaster and Magmaster...
View ArticleSPI timing issue with max35101
I've been trying to test the time to digital converter max35101 with an stm32f407vg6 microcontroller and am stuck for some reason. The timings for the SPI communication seem to be extremely strict for...
View Articlestore different values into two variables from rotary encoder
Hi All, I am trying to store two variables within a while loop after reading a rotary encoder but it stores the same value of w1 when switching over to w2 Code (C): #include<PinChangeInterrupt.h>...
View ArticleDetermine what interrupt triggers
Hi Been struggeling a bit, and can't get my interrupts to work, PIC16F690 Code (Text): #include <htc.h> #include <stdio.h> #include <stdlib.h> #include "lcd.h" #include...
View ArticleAccess ETM of Nucleo F401RE without using a debug kit
Hi i’m using Nucleo board F401RE. i want to access to ETM with code, without debug kit. i'm using IAR workbench. My code: Code (C): #define ETM_CR 0xE0041000 // Address of ETM_CR #define ETM_LAR...
View ArticleGetting started to Computer embedded systems
Hi everyone, I would like to learn about embedded systems, memory management, computer architecture or what I would need for build smart electronic devices, so maybe I could design and build my own PC,...
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Can't init more than one line on LCD
Hi My init for LCD seems to malfunction,( but do proberly what i have told it to do Get only line 1 active. Here is LCD.c code Code (Text): #ifndef _XTAL_FREQ // Unless specified elsewhere, 8MHz...
View ArticleHow to Use a Rotary Encoder with an MCU
I have gone with this link https://accautomation.ca/plc-programming-example-shift-register-conveyor-reject/. I'm not familiar with PLC. I have knowledge of microcontroller. I want to interface Rotary...
View ArticleGuide to Sensor Interfacing
I have Photoelectric sensors and I want to interface it with mcu AT89C51. Sensor work with I have looked at datasheet But I don't have idea. I'm attaching datasheet of the sensor. A sensor is working...
View Articleunable to toggle a led on port pin using interrupt, went through code & can't...
trying to use interrupt on port pin to toggle a led & when i run the code the led stays on , i increase the counter to 50 & the led stays off i can't seem to figure out whats wrong in the code...
View ArticleDomains active during Microcontroller Sleep mode?
Hi all, Can some one tell me what are the domains active during the MCU sleep mode? I tired google. but unable to find the exact answer. Thanks.
View ArticleSimplifying my USART code [ char string]
Hey guys, so i created this code Code (Text): int main(void) { // PLL_Config(); SystemCoreClockUpdate(); char string[]= "Hello World"; int i=0;...
View ArticleIntoduction to battery powered systems and wifi.
Hello Everyone, I decided to take a dive into battery powered micocontroller systems and i need to know a few details before i go in any further. Basically how do i design a battery operated...
View Article18LF4520-Module works 18F4620-Module doesn't work, Oshonsoft,
Hi, I have PCB test circuit with 18LF4520, and I'm testing a compass module (AK8963C), which is working. I'm just finishing second update PCB, with 18F4620. The compass module doesn't work with this...
View ArticleZero crossing detector using 741 IC to measure frequency
I want to make a zero crossing detector using 741 IC to measure frequency of the supply (220V). I am using 12 V supply for 7 pin of IC. fig shows the detail but I am not getting 12 V and 0 V as...
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