Discussion in "Project Doubts" started by    Chinmay Das    Mar 10, 2009.
Thu Feb 04 2010, 04:46 PM
..


[ Edited Tue Feb 16 2010, 03:48 PM ]
Wed Mar 10 2010, 01:12 AM
Hey guys I am facing the same problem which chinmay faced at the first run

I am getting the same boxes in my LCD bt i have checked the connections

P0.0 is connected to DB0 and so on

Plzz help me out
Wed Mar 10 2010, 07:05 PM
pullups are on place?

well these all problems are solved now. it was long back when chinmay faced these problems. so you need to check your circuit carefully. must be some wiring issues.
Thu Mar 11 2010, 04:03 AM
anybody please give me the clear circuit of humidity sensor
the image in zip is quite confusing it has got 4 terminals but the actual sensor has 3 terminals and the element in the shunt is not recognizable
also is this the hih4000-001 or other i uses hih 4000-001 sensor


[ Edited Thu Mar 11 2010, 04:05 AM ]
Mon Mar 15 2010, 11:07 AM
some body please reply
ajay sir its very urgent please help give me the clear circuit of humidity sensor

Tue Mar 16 2010, 03:43 PM
Gaurav i already replied you.

open datasheet of HIH sensor, and there are only 3 pins -ve, o/p and +ve all goes to right place. there is a cap and resistance between -ve and o/p and +ve goes to VCC.

dont confuse youself with the above circuit too much. If you can update the circuit later on please do it, I would update the project considering your contribution to it.
 gaurav007 like this.
Tue Mar 16 2010, 03:49 PM
ok i get the point thanks once again
Wed Mar 31 2010, 07:56 PM
i hav finished the hardware work
I am facing the same problem which chinmay faced at the first run

I am getting the same boxes in my LCD bt i have checked the connections

P0.0 is connected to DB0 and so on

Plzz help me out
Thu Apr 03 2014, 05:05 PM
only changes in varible resistor(between vcc,gnd & 3 pin of lcd contrast chnge)...as like 0 ohm...otherwise you coonect lcd wrong way..

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Thu Nov 21 2019, 12:30 PM
raj2555
how to interface 8051 microcontroller with NRF24L01+ module
ExperimenterUK
Sat Oct 12 2019, 10:23 PM
Log in.. then post your code in the 8051 forum
Sat Oct 12 2019, 10:18 AM
Bhadra Sajikumar
i am doing a countdown timer with 8051 for my project, unfortunately our professor had to take a leave of absence before he could teach us most of it.. can someone explain the .asm code of it for me?
Mon Sep 23 2019, 07:37 AM
Nathaniel
I am doing a project for my schools wireless security system with cameras,sensors and spot lights using 8051 micro controller, could you help me out with the design and its source code.
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Caryn Kover
Thank you for your time,
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@Ismail ..post in forum, give details
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Hello. Please I won't download
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@BUSTER123 Please post in the forum
Tue Jul 23 2019, 06:13 PM
BUSTER123
hello! newbie here. i am kind of a guy who hates using ready - made existing libraries, so this helped a lot as i was trying to control and write to a character lcd display. however, i can't figure out how to set the cursor position. for example, i want to set it to the 5th column in the first row, so position 5. so according to the table, i am sending 10000101 on the 8 data lines of the lcd (register select pulled low). the cursor does not move there however. and i cant move the cursor left or right too. is it something wrong that i am doing? thank you.
ExperimenterUK
Thu Jul 11 2019, 07:55 PM
@ramos https://www.theengineeringprojects.com/2017/09/l298-motor-driver-library-proteus.html

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