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Hi all
I am receiving 116 bytes of data on serial port the packet format is fixed as i am receiving Byte0 and Byte1 as '<' and at Byte114 and Byte115
as '>' just to check thet i am receiving a right packet. for that purpose i have written the ISR as
void __attribute__...
Hi
I have to send around 700Byte and receive 500Byte per sec approx i am using 16-Bit but during that transmit receive the controller becomes
busy i have to disabled other interrupts.
According to Microchip there is a DMA co-processor within that controller i was trying to study it from the...
Hi.
I am working with 16 bit PIC24EP64GP206 microcontroller i have connected a 8Mhz external crystal at primary oscillator pins but from last so many hours i am not able to configure its oscillator registers i am using C30 compiler downloaded from Microchip.com please let me know how to...
You can use mux cd4051 between these RS232 ports. yes if you are going to connect all the TX RX and GND it may be the case of damaging the whole set up. even can damage your controller as well if there is no isolation between the two.
Which supply i.e. 5V or 12V with refrence to GND i have to chose for its input for long distance say 10Meters. for more than 1 sensor on a single line is there any specific ID arrangement.
Hi..
I am using Max485 and PIC18F452 for communicating multiple devices but there is no isolation in MAX-485. I need to implement isolation between the two,as ISO3086 from texas is costly IC i want to make it using optocouplers and related hardware.
if anybody has done it before please share the...
Temperature range would be from 0 to 100 deg C only. DS18B20 is a digital serial sensor is it easy to read its output. I mean to say that the output format has some standard or its simple binary to decimal conversion. Please suggest its working circuit if any.
Hi All
I have to measure temperature of a DG(Diesel Generator) canopy by using a Microcontroller which will be around 5-10 meters from the DG to a control room.For that purpose wire length will be increased previously i was using 10K NTC which was not so far from the MCU. if i go for the same...
Referred to the attached circuit from the same forum i need to convert DC 0-60V to 0-5Vdc. As it is shown at the input of op-amp we need to connect 0-10V at the input for that purpose i have connected a voltage divider of 100K and 200K POT which will give 10V at 60V input
i have connected...
Exactly i am talking about the strongest amplitude.. but as per my thinking an optocoupler can work as 0 and 1 only, i can not get a variable i/p at ADC of my PIC.
Re: RTC using pic16f877a
First read I2C protocol and datasheet of PIC16F877 its all about there then after understanding the concept of I2C it will become easy for you to write codes for digital clock.
For a short time you can use I2C libraries also which has fully working codes.
Interfacing is...
Thanks for your reply.
@Klystron i need to make a Phase selector which will sense 3-phase input supply and will select the healthy phase to drive the load.
I want to sense this voltage without any transformer and POT. I am using PIC18F452 Micro controller for that purpose driving load is a...
There is no issue related to current as my main motive is to display that voltage at LCD or Seven segment but its all about signal conditioning and parameters which has to be considered during design of such circuits.Can you please provide any example related to magnetic/Optical isolation for...
Please suggest how to sense AC voltage without isolation transformer by using combination of Resistance and Capacitors. i need to convert AC 230V to a level of 0-5V so that i can sense it using a Microcontroller. I have heard about isolated OP-AMPS are used for that purpose but never used them...
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