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Hi ,
I am using ATmega32A MCU and AVR Studio-4 .written a assembly program to glow the leds connected in PORTD.
I simulated it using AVR Studios-4 simulator ,its executing exactly as the program.
.INCLUDE "M32DEF.INC"
.ORG 0x0000
RJMP MAIN
MAIN: LDI R16,$FF
LDI R17,$00
OUT DDRD,R16
OUT...
hi to all,
with the above rank i got seat at CDAC kolkata .
and here are the total number of seats available for different course in CDAC in the below attachment.
Hi,
Recently I wrote C-CAT exam and got 1894 rank (A+B+C sections).
How many seats r available for PG-DESD course in C-DAC branches.would i get a seat in C-DAC for PG-DESD with the above rank.
If i would get a seat which would be the best C-DAC branch should i choose according to the priority...
Thanks you for your explanation.
If most of the time the MCU would be in sleep mode then it consumes only 1.6uA .
If i would write a program in this manner that is
After every one hour the MCU wakes up from the sleep mode and it would be awake for one minute so that it would measure all the...
Hi ,
Recently i developed a wireless sensor node to which i three analog sensors and one solid state relay.
Here i attached the figure of it
Power Requirements of MCU
Supply Voltage 2.7 - 3.6 V
Transmit Current (Typ@3.3V) 80mA
Idle/Receive Current (Typ@3.3V) 20mA
Power-down Current...
I mean that after driving the pins to 0v i could measure fluctuating voltage across the collector so then i turned off the MCU power and checked again at time also the the pins where to 0v but still i could measure voltage.
At last i could trouble shoot the problem there was a soldering...
@milesguidon,
when i used 100kohm resistance on bread board it as displaying the exactly half the voltage but when i had soldered it on the PCb and started measuring the analog value but it was not accurate to 1.5v then i replaced it with 1Mohm it was working fine now .
thank you for helping me.
@milesguidon
i did not have any thing besides the two resistors.
But as godfreyl had suggested i connected 100kohm resistance and is found that the half the top voltage was observed can i proceed now with 100k resistors .
thank you for ur explanation
As i don't have opamp readily i would like to use a resistor divider circuit .
just few minutes back i used two 1Mohm resistors in series and i found that the input voltage was 3vdc but when i measured across the junction of the two resistors it was 1.05vdc only...
thanks you for your brief explanation. before posting this thread i made a resistor divider with 1.2kohm resistor i found there was tremendous voltage drop from 3v to 0.68v i was confused i could not understand at that time now i understood.
Could you please link me to a tutorial how to use a...
Hi ,
I am using a Soil moisture sensor whose Output voltage is 0 to 3vDC which i am feeding to the ADC of the MCU.
The ADC is a 10bit ADC,And the maximum reference voltage is 1.8VDC as the reference voltage is less than the out put of the sensor voltage i could not measure the sensor out put...
Hi,
I tested the transistor it is working properly.
Here i attached the circuit diagram of what i had designed on a doted PCB board.
The BC109 transistors are being controlled by the MCU with 3.3v as input.
when the transistor is turned on i could measure 5v at the 1 and 2 terminals as...
Hi,
I am planing to use BC109 as a switch to control supply voltage of a sensor through a MCU.
The sensor specifications 5VDC and <10mA.
The Base input voltage is 3.3VDC from the micro-controller.
My question are?
1.How to calculate the Base resistance voltage.
2.Whether only a...
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