Duration 14:46

Beginners guide to the Hitachi HD44780 LCD display

by RC Tractor Guy

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Published 19 May 2011

This is a beginners guide to interfacing with the Hitachi HD44780 LCD display which is based on a tutorial by Julyan Ilett called "How to use intelligent L.C.D.s". Visit the RC Tractor Guy website, blog, forum and store at: http://rctractorguy.com/ Become a Patron to support the RC Tractor Guy: https://www.patreon.com/RCTractorGuy Like the RC Tractors and Construction Vehicles facebook page: https://www.facebook.com/RcTractorsAndConstructionVehicles

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LCD

Interface

Beginner

Hitachi

Electronics

Basics

Circuit

Comments - 39

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@breconmafia11 years ago Hey dude, thanks for getting back to me, i' ll have a look tomorrow night and see what the score is on part numbers etc.
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@anjlala12 years ago Awesome tutorial, thanks! Also, using eight dip switches to send test data is an excellent plan.
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@MariaEngstrom12 years ago This tutorial is actually awesome! Great work!
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@ourayvet17 years ago Very helpful tutorial. Thanks so much.
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@TheAmeriswede12 years ago You are the best thanks. Got me going in the right direction.
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@breconmafia11 years ago The akai s950 is an old machine (1989) uses el foils in it, done a search and apparantly people have modded there machines with this particular display, . ...Expand
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@MrLRankin211 years ago This is a wonderful tutorial. One thing though. The double and triple characters are caused by a phenomena called " switch bounce" if you were . ...Expand
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@bridor528511 years ago Hey, i have an led display from a dvd player that has 15pins, some run on gnd and some run on +3. 3v but i cant figure out how to control the individual s . ...Expand
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@pekerino12 years ago And how it work with the 4bit mode? I need to get another table for getting the characters!
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@RCTractorGuy11 years ago Have you got a potentiometer on the lcds pin 3 to adjust the contrast? Other than that i' m not sure although i have gotten some cheap lcds on ebay . ...Expand
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@breconmafia11 years ago Will this display work in an akai s950 sampler?
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@SmeeUncleJoe2 years ago Can you tell me how to tell the difference between a hd44780s and hd44780u? I' m putting some circuits together and would prefer to have a single 3. 3 . ...Expand
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@kousoulides12 years ago Hi, i' ve done a couple of projects using arduino, now i think i want to try do something with a pici am very experienced with c++, but i don' t know assembly, is it very difficult to program one of those? How do you upload the code to thedo you use a usb cable like with arduino?. ...Expand
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@elettronicaemotori6 years ago Ciao e complimenti per il tutorial.
gentilmente, puoi dire come hai fattolcd?
io non riesco a farla ho sempre problemi.
grazie.
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@MrLRankin211 years ago It can also be taken care of in hardware with a cap and a resistor set up to create a suitable time delay.
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@RCTractorGuy11 years ago Do you mean the ten pin piano dip switch? It works the same way as a toggle switch except that the switches all share a common pin. Does that make sense? I can make a video on switches if you really want it i don' t mind. ...Expand
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@RCTractorGuy12 years ago Hello, no you still use the same table however you send the commands in two 4 bit segments, i think its called sending a nibble or something like that. . ...Expand
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@RCTractorGuy11 years ago Ah right that' s very cool, well i think el foils are used to create the back light for character lcds so there' s a good chance it will be something similar. Hopefully it works out for you, good luck with it.
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@RCTractorGuy11 years ago I think it is, i' ve never used a sc204a but i think the pinout looks right.
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@williama-d611 years ago Are you sure i have a toggle switch i haven' t used on the board but it works differently i think i think you should make a video couse it really pissing me off.
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@breconmafia11 years ago The display came for the akai s950! Exactly the same size as the old lcd, it has 2 bits where i can solder on to the right, and two on the left, the old . ...Expand
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@SmeeUncleJoe2 years ago Almost need a newfie (from newfoundland, canada) to translate and i with my ancestors from county claire. Thanks for this though.
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@RCTractorGuy11 years ago Hi sorry for some reason your message got flagged as spam and i only just seen it now. I' m not sure you do have an lcd like the one in the video, can . ...Expand
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@RCTractorGuy11 years ago This is the first time i' ve ever heard of an akai s950, from a quick google search it appears to be some sort of synthesiser so i can only assume you . ...Expand
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@paulsharpe77408 years ago Hi a 4 x 20 the cursor starts at 0 for line 1, 64 for line 2, 20 for line 3 and 84 for line 4. The line' s are much longer than the screen on a 2 id="hidden16" x 16 and thay have gust folded the ends to appear to be a 4 line which is why the addresse look funny but try it. ...Expand 1
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@someoneyoudontknow1068 years ago I have a 4x20 display but i can only write to the first and third line. How do i initialize the display for 4x20 so i can use all of the four lines? id="hidden17"
btw i can set my arduino to work with my 4x20 display and it works so my display is ok!. ...Expand
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@RCTractorGuy11 years ago To be honest i' m not sure, can you see a part number on either display. Maybe we could check the spec sheets for each (if we can find them) and figure it out from there.
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@dylanmcjarrow79346 years ago Place a low pass passive filter on that button.
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@RCTractorGuy12 years ago Hi, well first i guess i should explain that you aren' t really programming the atmel chip on the arduino, you are only telling the bootloader (which . ...Expand
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@RokcetScientist113 years ago Stop mumbling and speak up, mate! Next time better.
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@breconmafia11 years ago The akai s950 is an old machine (1989) uses el foils in it, done a search and apparantly people have modded there machines with this particular display, . ...Expand
@

@MrLRankin211 years ago This is a wonderful tutorial. One thing though. The double and triple characters are caused by a phenomena called " switch bounce" if you were . ...Expand
@

@bridor528511 years ago Hey, i have an led display from a dvd player that has 15pins, some run on gnd and some run on +3. 3v but i cant figure out how to control the individual s . ...Expand
@

@RCTractorGuy11 years ago Have you got a potentiometer on the lcds pin 3 to adjust the contrast? Other than that i' m not sure although i have gotten some cheap lcds on ebay . ...Expand
@

@SmeeUncleJoe2 years ago Can you tell me how to tell the difference between a hd44780s and hd44780u? I' m putting some circuits together and would prefer to have a single 3. 3 . ...Expand
@

@kousoulides12 years ago Hi, i' ve done a couple of projects using arduino, now i think i want to try do something with a pici am very experienced with c++, but i don' t know assembly, is it very difficult to program one of those? How do you upload the code to thedo you use a usb cable like with arduino?. ...Expand
@

@RCTractorGuy12 years ago Hello, no you still use the same table however you send the commands in two 4 bit segments, i think its called sending a nibble or something like that. . ...Expand
@

@breconmafia11 years ago The display came for the akai s950! Exactly the same size as the old lcd, it has 2 bits where i can solder on to the right, and two on the left, the old . ...Expand
@

@RCTractorGuy11 years ago Hi sorry for some reason your message got flagged as spam and i only just seen it now. I' m not sure you do have an lcd like the one in the video, can . ...Expand
@

@RCTractorGuy11 years ago This is the first time i' ve ever heard of an akai s950, from a quick google search it appears to be some sort of synthesiser so i can only assume you . ...Expand
@

@paulsharpe77408 years ago Hi a 4 x 20 the cursor starts at 0 for line 1, 64 for line 2, 20 for line 3 and 84 for line 4. The line' s are much longer than the screen on a 2 id="hidden34" x 16 and thay have gust folded the ends to appear to be a 4 line which is why the addresse look funny but try it. ...Expand 1
@

@someoneyoudontknow1068 years ago I have a 4x20 display but i can only write to the first and third line. How do i initialize the display for 4x20 so i can use all of the four lines? id="hidden35"
btw i can set my arduino to work with my 4x20 display and it works so my display is ok!. ...Expand
@

@RCTractorGuy12 years ago Hi, well first i guess i should explain that you aren' t really programming the atmel chip on the arduino, you are only telling the bootloader (which . ...Expand