How to start a Arduino project -- New to electronics
Hi All, It has been almost 15+ years that I touched electronics books for my engineering studies. I know some of the basics but not all and I am from IT Programming background. I want to develop...
View ArticlePWM - pic18f4550 - led + potentiometer (simple project)
Hello. I'm doing my first program with pwm and am encountering some difficulties to do a small project. I want to vary the voltage of an LED as the turning of a potentiometer. However, the examples I...
View ArticleSerial communication programming in atmega328p on arduino
I am trying to program arduino's atmega328p serial communication registers myself. After referring to several resources on the internet I have arrived at the following code: Code (Text): #define...
View ArticledsPIC33EP256MC506 reset after power on
Hello Everyone, I have difficulty with power-on on my dsPIC. The problem is that after power-on dsPIC do not reset. View attachment 107977 MCLR is connected to dsPIC pin. Reset is connected to...
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Atmega328p with ADXL345
Hi. I am trying to build a custom sensor board to connect several sensors to Atmega328p microcontroller. If anyone can help me and look to the schematics, maybe point some errors, I would really...
View ArticleMemory management unit in pic32mz
Hi guys I was looking at a pic32mz today and noticed that they have a MMU, and you can add ram or flash through SQI or EBI module. This maybe a silly question, is that mean I can add extra memory on a...
View ArticleHelp about CAN network
hello everyone I'm learning about the CAN network. I program for PIC18F2580 based on MikroC compiler. but I do not understand about the configuration flags such as: const char _CAN_CONFIG_DEFAULT =...
View ArticleCan the MQ-2 gas sensor can be used for alochol sensing ?
if it can be used . i wanted to why? and how?
View Articleir sensor and pulse count, using mikroC software.
can u pls help me write a program for frequency counter/pulse counter using hall effect sensor? using mikroC software.
View Articlehelp about compiler of C8051F800
Hello every one i m programming to measure capacitive by using CS0 (capacitive sense) modul of C8051f800. I'm having problem that all Compliers I using are not support that MCU. I m using Mikro C and...
View ArticleOverriding maximum volume level of door chime circuit
[DEVICE SETTING] NUM SUPPORT FLASH TYPE = 17 DATA_START_ADDRESS = 0x100000 CLUSTER_SIZE = 0x400 POWER_SWTICH_TIME = 0xFFFF LED_FLASH_HALF_PERIOD = 0xFFFF MAX_VOLUME_LEVEL = 0xFFFF DEFAULT_MRC = Silence...
View Article12F675 relay control/small problems
Hello. I tried to build a circuit that controls relay according to voltage. But I have small problems and hope you can help me about them. The main purpose of circuit, at first opening it measures the...
View ArticleAtTiny85 in CTC Mode Oscillate +/- 500 Hz
So I have been struggling to make this chip output a 2.5 khz signal. I think I have managed to output this, but now I need to oscillate up and down +/- 500 Hz. So I will need the square signal to go...
View ArticleGeneral Advice on Micro controller circuit
Sorry if this questions too brief or...stupid but essentially I'm on an electrical/electronic engineering course and have never had previous experience building a circuit before. I have been requested...
View ArticleUART Rx Preemption in Cortex M0
Sir, I'm using UART 2 as a higher priority interrupt than other UART ports in Nuc-220 ARM Cortex M0 I want to know what happen if I use UART 2 Tx while inside a UART2 Rx interrupt Service Routine, will...
View ArticleMcu outputs voltage but no current.
I'm troubleshooting a proprietary elevator with very limited schematics and I have a 24vdc relay that will not pick. It has 24vdc across the coil and the coil is good, but the relay will not pick. All...
View ArticleDS18B20 Temp Sensor - Working Intermittently & Not Reliable - Took Scope...
Hey guys, I am using a Particle Photon (microcontroller w/ cloud connectivity) to communicate with a DS18B20 temperature sensor via the 1-wire bus. Below is how I have it wired up: View attachment...
View ArticleStrain gauge output to serial data
Hello, i am new to hardware circuit design. This can be a very simple question for many. I have a strain gauge setup whose output has to be measured in voltage and to be sent to a microcontroller unit...
View ArticleUV LED to erase EPROMs, need update
Last time I looked into erasing an EPROM with an LED the only ones available were 400 nm. Can I get a confirmation from somebody that I need 250 nm? How bright? I can find a few but at a $150 price...
View Articleelectrical power measurment using embedded bords to log data to server.
I have to find power usage of a room switch board so till now I got an option of pzem-004t of peacefair that can measure power, voltage, current and kilowatt hour and is affordable around 10$ but...
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