GreenBee Project

before updating the lcd page, you can send a 0x01 command to clear screen and then write to LCD.

Sir,

1. Can you please give an example where to add the command to clear the screen please ...

2. Where can i buy the Humidity Sensor HIH-4000-001

HIH4000 seems to be giving voltage O/P where as the HH10D sensor seems to be giving frequency outputs

Time is getting by and i need to buy the sensor soon, Please help me out !

Thank You

The HUMIDITY sensor used in the circuit uses 0.8 to 3.8 Volts to represent 0% to 100% Humidity.

But this sensor is not available here.

The sensor that is available in net, gives 5KHz to 10KHz Frequency to represent 0% to 100% Humidity.



So the problem is:

We need to convert the FREQUENCY to VOLTAGE to use the same code.

or

Need to modify the code to work with the frequency ( I wonder if its possible or not )


We don't have time. Please some one reply soon...

u have very short time so procees to ur hardware dont waste ur time!

Yes indeed i have very short time.

Finally i found :
Humidity sensor (HIH-4000-001) - Rs.2146/-
http://shopping.kitsnspares.com/bon1/productdescription.asp?id=12727533

Is it worth it ? do i really need to spend so much money ?

Need to modify the code to work with the frequency ( I wonder if its possible or not )

firoz3321

It is certainly possible, even "easy" if you are experienced.

What you do is, use one pin to monitor the signal.
Count the time between any two pulses.
This gives you the frequency and so the humidity.

Unfortunately I'm not experienced. In fact i'm really very very noob

And i noticed yesterday that the SIMULATION of PROTEUS works fine for all the sensors but when i change the input voltage levels of the HUMIDITY sensor, i dont see any changes. any reasons ?

I set all other sensors as 0 volts and only set the Humidity sensor inputs but found no change. it shows 0%.

Firoz Humidity sensor is available here in lahore pakistan but it costs only 100 rupees

i contact da person who made this project he used same humidity sensor, he buy the sensor in 100 rupees only

its strange price which u r telling about it very very expensive which u r going to buy!

Thats really very low cost cant believe it.
i think the value of Indian Rupee and your Rupee are almost same.

I wonder whats going on

no its not same i indian rupee is equal to almost 1.8 pak rupee by this the sensor is very cheep here