User electro_nooobbbb | chat.stackexchange.com

electro_nooobbbb

Mar 1, 2023 04:31

Hi Mr hcheung, could you please check!

electro_nooobbbb

Feb 28, 2023 11:08

Now i would try it for attiny

electro_nooobbbb

Feb 28, 2023 11:07

void setup(){
Serial.begin(9600);
}

void loop() {

//REFS1 AND REFS0 to 1 1 -> internal 1.1V refference
ADMUX |= B11000000;
//We read A1 (MUX0)
ADMUX |= B00000001;
//int sensor = analogRead(A1);
// Start AD conversion
ADCSRA |= B11000000;
// Detect end-of-conversion
while (bit_is_set(ADCSRA,ADSC));
float val = ADCL | (ADCH << 8);
val = val * 5.7; //Multiply by the inverse of the divider
Serial.println(val);

float voltage = val * analogRead(A0) / 1023;
voltage = ADCL | (ADCH << 8);
Serial.print ("voltage at A0:");

electro_nooobbbb

Feb 28, 2023 10:38

This code reads constant voltage

electro_nooobbbb

Feb 28, 2023 10:38

void loop() {
//REFS1 AND REFS0 to 1 1 -> internal 1.1V refference
ADMUX |= B11000000;
//We read A1 (MUX0)
ADMUX |= B00000001;
// Start AD conversion
ADCSRA |= B11000000;
// Detect end-of-conversion
while (bit_is_set(ADCSRA,ADSC));
float val = ADCL | (ADCH << 8);
val = val * 5.7; //Multiply by the inverse of the divider
Serial.println(val);
}

electro_nooobbbb

Feb 28, 2023 10:26

and i have already wrote a program that can read constant battery voltage the issue with that is, the moment i add solar code to battery code, it starts behaving abnormally.

electro_nooobbbb

Feb 28, 2023 10:25

int sensorValue = analogRead(A0); // Solar Panel Positive PIN connect to A0
float voltage = sensorValue * (5.0 / 1023.0); as per my research in order to read solar voltage constant voltage supply is required

electro_nooobbbb

Feb 28, 2023 10:21

but i dont understand what is the issue with solar panel

electro_nooobbbb

Feb 28, 2023 10:21

for testing purposes i connected potentiometre in place of solar panel and it works perfectly

electro_nooobbbb

Feb 28, 2023 10:13

tested with diode

electro_nooobbbb

Feb 28, 2023 10:12

Solar panel voltage:4.64
voltage at A0:0.82
Solar panel voltage:4.65
voltage at A0:0.82
Solar panel voltage:4.65
voltage at A0:0.81
Solar panel voltage:4.64
voltage at A0:0.81
Solar panel voltage:4.64
voltage at A0:0.82
Solar panel voltage:4.65
voltage at A0:0.82
Solar panel voltage:4.65
voltage at A0:0.81
Solar panel voltage:4.64

electro_nooobbbb

Feb 28, 2023 10:12

it does not work

electro_nooobbbb

Feb 28, 2023 09:19

i will give it a try

electro_nooobbbb

Feb 28, 2023 09:18

ok

electro_nooobbbb

Feb 28, 2023 09:07

where should i connect the solar? we are reading A0 from a voltage divider that's correct code is also correct but where should i connect the solar?

electro_nooobbbb

Feb 28, 2023 09:05

sorry?

electro_nooobbbb

Feb 28, 2023 09:05

sorry

electro_nooobbbb

Feb 28, 2023 09:05

just that

electro_nooobbbb

Feb 28, 2023 09:05

you tell me where do i need to connect solar panel

electro_nooobbbb

Feb 28, 2023 09:05

ok

electro_nooobbbb

Feb 28, 2023 09:03

is it ok to leave the two ends of the solar open like that?

electro_nooobbbb

Feb 28, 2023 09:00

I disconnected 5v from the panel. Now the +side goes to one end of voltage divider and -side goes to GND side of the divider.

electro_nooobbbb

Feb 28, 2023 08:59

.27
voltage at A0:1.10
Solar panel voltage:6.27
voltage at A0:1.10
Solar panel voltage:6.27
voltage at A0:1.10
Solar panel voltage:6.27
voltage at A0:0.39
Solar panel voltage:2.25
voltage at A0:1.10
Solar panel voltage:6.27
voltage at A0:1.10
Solar panel voltage:6.27
voltage at A0:1.10
Solar panel voltage:6.27
voltage at A0:1.10
Solar panel voltage:6.27

electro_nooobbbb

Feb 28, 2023 08:58

ok

electro_nooobbbb

Feb 28, 2023 08:54

my connections are right or wrong?

electro_nooobbbb

Feb 28, 2023 08:54

so what do you say

electro_nooobbbb

Feb 28, 2023 08:54

i am electronic engineer,i have completed my project but i am badly stuck in here.sorry

electro_nooobbbb

Feb 28, 2023 08:51

where do i need to connect it ?solar?

electro_nooobbbb

Feb 28, 2023 08:50

5v where?

electro_nooobbbb

Feb 28, 2023 08:50

one side to voltage divider goes to 5v and the other one two GND and to the same point i have connected solar panel.

electro_nooobbbb

Feb 28, 2023 08:49

yes

electro_nooobbbb

Feb 28, 2023 08:49

4.7k and 1k and from the mid took one pin to A0

electro_nooobbbb

Feb 28, 2023 08:48

no i made voltage divider

electro_nooobbbb

Feb 28, 2023 08:48

even if i cover the full panel, it should read 0v if full covered

electro_nooobbbb

Feb 28, 2023 08:47

A0:0.99
Solar panel voltage:5.65
voltage at A0:0.99
Solar panel voltage:5.65
voltage at A0:0.99
Solar panel voltage:5.67
voltage at A0:1.01
Solar panel voltage:5.74
voltage at A0:1.01
Solar panel voltage:5.77
voltage at A0:1.01
Solar panel voltage:5.76
voltage at A0:1.01
Solar panel voltage:5.76
voltage at A0:1.01
Solar panel voltage:5.76
voltage at A0:1.01
Solar panel voltage:5.76
voltage at A0:1.01
Solar panel voltage:5.75
voltage at A0:1.01
Solar panel voltage:5.76
voltage at A0:1.01
Solar panel voltage:5.74

electro_nooobbbb

Feb 28, 2023 08:46

the reading should increase

electro_nooobbbb

Feb 28, 2023 08:46

it does not change if light falls on it

electro_nooobbbb

Feb 28, 2023 08:46

hi

electro_nooobbbb

Feb 28, 2023 08:36

from new code

electro_nooobbbb

Feb 28, 2023 08:36

Solar panel voltage:4791482.00voltage at A0:841541.81
Solar panel voltage:4796788.00voltage at A0:841541.81
Solar panel voltage:4796788.00voltage at A0:843403.62
Solar panel voltage:4807400.50voltage at A0:843403.62
Solar panel voltage:4807400.50voltage at A0:841541.81
Solar panel voltage:4796788.00voltage at A0:839680.00
Solar panel voltage:4786176.00voltage at A0:837818.18
Solar panel voltage:4775563.50voltage at A0:837818.18
Solar panel voltage:4775563.50voltage at A0:839680.00
Solar panel voltage:4786176.00voltage at A0:839680.00

electro_nooobbbb

Feb 28, 2023 08:34

ok i will try the second one.

electro_nooobbbb

Feb 28, 2023 08:34

serial monitor readings from your first code

electro_nooobbbb

Feb 28, 2023 08:33

189.00
189.00
190.00
190.00
190.00
190.00
190.00
190.00
190.00
190.00
190.00
190.00
190.00
189.00
190.00

electro_nooobbbb

Feb 28, 2023 08:28

ok,omg only this much was needed.

electro_nooobbbb

Feb 28, 2023 08:24

can u see error?

electro_nooobbbb

Feb 28, 2023 08:24

ADMUX |= B11000000;
int sensor = analogRead(A0);
ADCSRA |= B11000000;
while(bit_is_set(ADCSRA, ADSC));
float voltage = ADCL | (ADCH << 8);
voltage = (sensor /1.1)*1024;
Serial.println (voltage);

electro_nooobbbb

Feb 28, 2023 08:18

Please check my schematic and code , i have posted it.

electro_nooobbbb

Feb 28, 2023 08:17

my solar panel is 6V, 30mA

electro_nooobbbb

Feb 28, 2023 08:16

Yes, i did try with 1.1v as well, it is persistently showing me 0.00V

electro_nooobbbb

Feb 28, 2023 08:16

ldr as i said is just used because i dont have solar panel component in my software.

electro_nooobbbb

Discussion between hcheung and electr…