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fasasoftware@gmail.com  
#1 Posted : Saturday, December 07, 2019 9:00:33 AM(UTC)
fasasoftware@gmail.com

Rank: Advanced Member

Groups: BetaUser, Registered
Joined: 12/28/2015(UTC)
Posts: 30

Need Help Making an I2c LCD 16x2 Custom Node...

I'm trying to make a custod node for my i2c 16x2 lcd but without success...

I use this library: #include <LiquidCrystal_PCF8574.h>
and the i2c address is LiquidCrystal_PCF8574 lcd(0x3F);

and then make initialiations.....

Wire.begin();
lcd.begin(16, 2);
lcd.setBacklight(255);

and then print something....

lcd.setBacklight(255);
lcd.setCursor(2, 0);
lcd.print("Test");
lcd.setCursor(3, 1);
lcd.print("Computer!");
delay(1200);
lcd.clear();

can somebody help me?? please??
best regard and Merry Christmas,
LestrosoBlushing Blushing Blushing


EmbrioAdmin  
#2 Posted : Saturday, December 07, 2019 10:39:19 AM(UTC)
EmbrioAdmin

Rank: Administration

Groups: Administrators
Joined: 12/11/2014(UTC)
Posts: 647

Thanks: 1 times
Was thanked: 36 time(s) in 33 post(s)
Can you send me the node as it is currently? You can just copy it from Embrio then paste it as text either into a reply here or into an e-mail.

Without seeing the node I can't really say what's wrong. I will say though that you will want to remove the delay(1200) line, you never want delays in an Embrio node. If you want to be able to clear the LCD like in the example code, you'll want to make a trigger input with the lcd.clear() code.

There are two LCD custom nodes already in the library, they might show you what you need to do.

http://embrio.io/library/outputs/lcd-and-display

You can either add those from the Library tab in Embrio, or on the site go to one of the pages, select all of the XML and copy and paste that into Embrio.

If you still have trouble after that let me know.
fasasoftware@gmail.com  
#3 Posted : Sunday, December 08, 2019 8:05:38 AM(UTC)
fasasoftware@gmail.com

Rank: Advanced Member

Groups: BetaUser, Registered
Joined: 12/28/2015(UTC)
Posts: 30

I don't know if it is ok this code below...i have enclose here my node...i need to make for my I2c Lcd 16x2 ... the address of my lcd is "3F".. i thank you a lot...best regards,
Lestroso Blushing



Quote:


<EmbrioCopy>
<Version>2.3.0.0</Version>
<Name></Name>
<UniqueID>00000000-0000-0000-0000-000000000000</UniqueID>
<Description></Description>
<NodeColor>128,128,128,255</NodeColor>
<IsBuiltIn>False</IsBuiltIn>
<ImageByteArray></ImageByteArray>
<Nodes>
<Node>
<UniqueID>26563f94-18d3-4f32-9f7b-6ec8b2b95c08</UniqueID>
<NodeType>Dynamic</NodeType>
<NodeName>I2C Display</NodeName>
<UserDefinedName></UserDefinedName>
<Description></Description>
<NodeColor>201,227,222,255</NodeColor>
<X>0</X>
<Y>0</Y>
<Width>260</Width>
<Height>201.48</Height>
<HideUnconnectedIO>False</HideUnconnectedIO>
<DefinitionID>bdc48567-a74a-4244-883a-14ca1ac3101a</DefinitionID>
<EditingProperties>
<IsInEditMode>False</IsInEditMode>
<CodeHeight>300</CodeHeight>
<EditedLanguage>Arduino</EditedLanguage>
<IsEditingIODefinitions>False</IsEditingIODefinitions>
<UpdateCodeDefinitionID>6438f60f-4a14-4330-be0e-209943e42d18</UpdateCodeDefinitionID>
</EditingProperties>

<SetLength>0</SetLength>
<SetInputs></SetInputs>
<SetOutputs></SetOutputs>
<Inputs>
<Input>
<UniqueID>5131da61-3f00-424b-8377-5a70e3bc0305</UniqueID>
<DefinitionID>a6816b55-d4ad-471d-a65a-11f7d722a923</DefinitionID>
<DefaultName>Activation</DefaultName>
<CustomName></CustomName>
<IsNative>False</IsNative>
<TypeName>Numeric</TypeName>
<IsOutsideConnection>False</IsOutsideConnection>
<IOType>Embrio.NodeEngine.NodeIO.NumericNodeInput</IOType>
<ShowGraph>False</ShowGraph>
<LinkedIOID>00000000-0000-0000-0000-000000000000</LinkedIOID>
<ConnectedOutputs></ConnectedOutputs>
<BlendMode>Add</BlendMode>
<DisconnectedValue>1</DisconnectedValue>
<UseNegativeRange>False</UseNegativeRange>
<CanUseNegativeRange>True</CanUseNegativeRange>
</Input>

<Input>
<UniqueID>e911dcd7-06da-43e2-af9a-e47ff421b64c</UniqueID>
<DefinitionID>e1547e80-5c90-4caa-bd4c-b49c5267da60</DefinitionID>
<DefaultName>Trigger</DefaultName>
<CustomName></CustomName>
<IsNative>False</IsNative>
<TypeName>Trigger</TypeName>
<IsOutsideConnection>False</IsOutsideConnection>
<IOType>Embrio.NodeEngine.NodeIO.TriggerNodeInput</IOType>
<ShowGraph>False</ShowGraph>
<LinkedIOID>00000000-0000-0000-0000-000000000000</LinkedIOID>
<ConnectedOutputs></ConnectedOutputs>
</Input>

</Inputs>

<Outputs></Outputs>
</Node>

</Nodes>

<NodeDefinitions>
<Definition>
<Name>I2C Display</Name>
<SoftwareVersion>2.3.0.0</SoftwareVersion>
<UniqueID>bdc48567-a74a-4244-883a-14ca1ac3101a</UniqueID>
<Description></Description>
<UseIOSet>False</UseIOSet>
<InputDefinitions>
<InputDefinition>
<Type>Embrio.NodeEngine.Definitions.NumericNodeInputDefinition</Type>
<Name>Activation</Name>
<UniqueID>a6816b55-d4ad-471d-a65a-11f7d722a923</UniqueID>
<IsOutsideConnection>False</IsOutsideConnection>
<IsInIOSet>False</IsInIOSet>
<IsUserAdded>True</IsUserAdded>
<ConfigurationOnly>False</ConfigurationOnly>
<NumericDisconnectedValue>0</NumericDisconnectedValue>
<NumericUseNegativeRange>False</NumericUseNegativeRange>
<BlendMode>Add</BlendMode>
</InputDefinition>

<InputDefinition>
<Type>Embrio.NodeEngine.Definitions.TriggerNodeInputDefinition</Type>
<Name>Trigger</Name>
<UniqueID>e1547e80-5c90-4caa-bd4c-b49c5267da60</UniqueID>
<IsOutsideConnection>False</IsOutsideConnection>
<IsInIOSet>False</IsInIOSet>
<IsUserAdded>True</IsUserAdded>
<ConfigurationOnly>False</ConfigurationOnly>
</InputDefinition>

</InputDefinitions>

<OutputDefinitions></OutputDefinitions>
<UpdateCodes>
<UpdateCode>
<UpdateCondition>Declaration</UpdateCondition>
<CodeImplementations>
<Implementation>
<Code>#include &amp;lt;Wire.h&amp;gt;

#include &amp;quot;LiquidCrystal_I2C.h&amp;quot;

LiquidCrystal_I2C lcd(0x27, 16, 2);</Code>
<Language>CSharp</Language>
</Implementation>

<Implementation>
<Code>#include &amp;lt;Wire.h&amp;gt;
#include &amp;lt;LiquidCrystal_PCF8574.h&amp;gt;
LiquidCrystal_PCF8574 lcd(0x3F);</Code>
<Language>Arduino</Language>
</Implementation>

</CodeImplementations>

<UniqueID>b58d9f6d-51e5-4833-9f3b-dce535b11f9c</UniqueID>
</UpdateCode>

<UpdateCode>
<UpdateCondition>Startup</UpdateCondition>
<CodeImplementations>
<Implementation>
<Code>// initialize the LCD

lcd.begin();

// Turn on the blacklight and print a message.

lcd.backlight();

lcd.print(&amp;quot;Hello, world!&amp;quot;);</Code>
<Language>CSharp</Language>
</Implementation>

<Implementation>
<Code>// initialize the LCD
lcd.begin();
Wire.begin();
lcd.begin(16, 2);
lcd.setBacklight(255);
</Code>
<Language>Arduino</Language>
</Implementation>

</CodeImplementations>

<UniqueID>6cc116a0-563e-4cad-bdb3-ea92e0613048</UniqueID>
</UpdateCode>

<UpdateCode>
<UpdateCondition>EveryUpdate</UpdateCondition>
<CodeImplementations>
<Implementation>
<Code></Code>
<Language>CSharp</Language>
</Implementation>

<Implementation>
<Code> </Code>
<Language>Arduino</Language>
</Implementation>

</CodeImplementations>

<UniqueID>b4eb5ed6-f266-42b5-b4de-e1e829f6cf89</UniqueID>
</UpdateCode>

<UpdateCode>
<UpdateCondition>Shutdown</UpdateCondition>
<CodeImplementations>
<Implementation>
<Code></Code>
<Language>CSharp</Language>
</Implementation>

<Implementation>
<Code></Code>
<Language>Arduino</Language>
</Implementation>

</CodeImplementations>

<UniqueID>8c410ba4-c368-41e3-b9ae-695921b0eb26</UniqueID>
</UpdateCode>

<UpdateCode>
<UpdateCondition>InputChange</UpdateCondition>
<CodeImplementations>
<Implementation>
<Code> lcd.setCursor(2, 0);
lcd.print(&amp;quot;Super&amp;quot;);
lcd.setCursor(3, 1);
lcd.print(&amp;quot;Computer!);</Code>
<Language>Arduino</Language>
</Implementation>

<Implementation>
<Code></Code>
<Language>CSharp</Language>
</Implementation>

</CodeImplementations>

<UniqueID>6438f60f-4a14-4330-be0e-209943e42d18</UniqueID>
<Inputs>
<Input>2ec9614d-2291-4bcc-af3d-dfba82ebf0ea</Input>
<Input>55d402a1-c97f-4dee-8c30-aa8dea429497</Input>
</Inputs>

</UpdateCode>

<UpdateCode>
<TriggerInputID>e1547e80-5c90-4caa-bd4c-b49c5267da60</TriggerInputID>
<UpdateCondition>Trigger</UpdateCondition>
<CodeImplementations>
<Implementation>
<Code>
lcd.clear();</Code>
<Language>Arduino</Language>
</Implementation>

</CodeImplementations>

<UniqueID>d184508d-f4f0-435e-b25a-334be30dc0e8</UniqueID>
</UpdateCode>

</UpdateCodes>

<NodeColor>201,227,222,255</NodeColor>
<IsBuiltIn>False</IsBuiltIn>
<TouchesPin>True</TouchesPin>
<IsLanguageLocked>False</IsLanguageLocked>
<UseCanvas>False</UseCanvas>
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,173,247,49,47,228,228,65,90,115,83,11,75,153,72,75,214,100,22,231,178,72,68,210,247,119,230,225,88,36,194,142,227,245,141,8,55,39,139,118,45,91,249,100,130,109,90,87,79,23,106,210,141,71,223,186,233,172,191,125,255,101,239,220,177,103,247,53,23,118,119,116,254,59,147,92,238,183,29,155,175,247,208,110,120,251,245,167,172,248,122,134,29,116,82,212,195,165,251,30,253,97,29,25,124,91,207,154,141,31,88,181,116,249,3,153,84,102,84,202,148,67,47,137,101,23,127,87,46,35,153,72,6,222,145,191,18,187,65,25,227,33,223,137,1,69,74,202,123,81,117,34,114,202,204,212,242,63,10,164,246,75,123,42,231,78,255,183,5,49,160,252,127,174,8,37,169,204,91,172,116,34,95,253,224,183,236,48,175,17,15,203,33,137,86,140,45,223,203,8,83,163,155,134,142,255,1,84,96,80,213,207,178,246,95,0,0,0,0,73,69,78,68,174,66,96,130</ImageByteArray>
<CategoryName>Project</CategoryName>
</Definition>

</NodeDefinitions>

</EmbrioCopy>

EmbrioAdmin  
#4 Posted : Sunday, December 08, 2019 8:45:40 AM(UTC)
EmbrioAdmin

Rank: Administration

Groups: Administrators
Joined: 12/11/2014(UTC)
Posts: 647

Thanks: 1 times
Was thanked: 36 time(s) in 33 post(s)
Not sure what the issue is with your node. I made a new one by copying and pasting code from here: https://github.com/mathe...Crystal_PCF8574_Test.ino

Mine has just a text input and trigger to print the input text to the screen.

Does this work for you? (expand the spoiler to get the xml)

fasasoftware@gmail.com  
#5 Posted : Sunday, December 08, 2019 11:27:12 AM(UTC)
fasasoftware@gmail.com

Rank: Advanced Member

Groups: BetaUser, Registered
Joined: 12/28/2015(UTC)
Posts: 30

Dear EmbrioAdmin!!! You helped me so much!! Thanks a lot...I have succeded with your node suggestion... Here i post the final node that could help somebody else...
I have made a little modification....The address of my Lcd is 3F .

Marry Christmas,
LestrosoBigGrin
Quote:


<EmbrioCopy>
<Version>2.3.0.0</Version>
<Name></Name>
<UniqueID>00000000-0000-0000-0000-000000000000</UniqueID>
<Description></Description>
<NodeColor>128,128,128,255</NodeColor>
<IsBuiltIn>False</IsBuiltIn>
<ImageByteArray></ImageByteArray>
<Nodes>
<Node>
<UniqueID>3509c50c-3840-47fc-a73c-9c3e5571d6c9</UniqueID>
<NodeType>Dynamic</NodeType>
<NodeName>LiquidCrystal PCF8574</NodeName>
<UserDefinedName>LiquidCrystal I2c PCF8574</UserDefinedName>
<Description></Description>
<NodeColor>201,227,222,255</NodeColor>
<X>0</X>
<Y>0</Y>
<Width>260</Width>
<Height>324.08</Height>
<HideUnconnectedIO>False</HideUnconnectedIO>
<DefinitionID>b1bc6c86-5220-4ef5-9dc5-c6981070edd9</DefinitionID>
<EditingProperties>
<IsInEditMode>False</IsInEditMode>
<CodeHeight>300</CodeHeight>
<EditedLanguage>Arduino</EditedLanguage>
<IsEditingIODefinitions>False</IsEditingIODefinitions>
<UpdateCodeDefinitionID>587370f1-7351-457f-b2a3-8539de018009</UpdateCodeDefinitionID>
</EditingProperties>

<SetLength>0</SetLength>
<SetInputs></SetInputs>
<SetOutputs></SetOutputs>
<Inputs>
<Input>
<UniqueID>98a2d4d4-babb-4cb3-9ed6-b658c5e8374a</UniqueID>
<DefinitionID>7f4ee6f5-240d-4689-bf6a-d973a16d153b</DefinitionID>
<DefaultName>Text</DefaultName>
<CustomName>Text</CustomName>
<IsNative>False</IsNative>
<TypeName>String</TypeName>
<IsOutsideConnection>False</IsOutsideConnection>
<IOType>Embrio.NodeEngine.NodeIO.StringNodeInput</IOType>
<ShowGraph>False</ShowGraph>
<LinkedIOID>00000000-0000-0000-0000-000000000000</LinkedIOID>
<ConnectedOutputs></ConnectedOutputs>
<DisconnectedValue>Fasa</DisconnectedValue>
<MaxLength>10</MaxLength>
</Input>

<Input>
<UniqueID>ef6c35fd-dec4-404c-867a-7e7bc920b4de</UniqueID>
<DefinitionID>b2c6ab44-a3e7-40a1-a728-709a1bdc2f16</DefinitionID>
<DefaultName>Trigger</DefaultName>
<CustomName></CustomName>
<IsNative>False</IsNative>
<TypeName>Trigger</TypeName>
<IsOutsideConnection>False</IsOutsideConnection>
<IOType>Embrio.NodeEngine.NodeIO.TriggerNodeInput</IOType>
<ShowGraph>False</ShowGraph>
<LinkedIOID>00000000-0000-0000-0000-000000000000</LinkedIOID>
<ConnectedOutputs>
<Output>173d50cc-ef7c-405b-af3f-5618f529187e</Output>
</ConnectedOutputs>

</Input>

<Input>
<UniqueID>ce98b96e-f2f8-4b41-a31b-a57d61727a16</UniqueID>
<DefinitionID>c9b3dcd4-95b6-487b-a37d-16ca7f50a2fe</DefinitionID>
<DefaultName>Text 2</DefaultName>
<CustomName></CustomName>
<IsNative>False</IsNative>
<TypeName>String</TypeName>
<IsOutsideConnection>False</IsOutsideConnection>
<IOType>Embrio.NodeEngine.NodeIO.StringNodeInput</IOType>
<ShowGraph>False</ShowGraph>
<LinkedIOID>00000000-0000-0000-0000-000000000000</LinkedIOID>
<ConnectedOutputs></ConnectedOutputs>
<DisconnectedValue>Software</DisconnectedValue>
<MaxLength>10</MaxLength>
</Input>

</Inputs>

<Outputs>
<Output>
<UniqueID>0e44efe2-710f-481e-a686-af91f81d7e68</UniqueID>
<DefinitionID>ddfd26c4-c05e-4778-920b-04b00feb469c</DefinitionID>
<DefaultName>Connected</DefaultName>
<CustomName></CustomName>
<IsNative>False</IsNative>
<TypeName>Numeric</TypeName>
<IsOutsideConnection>False</IsOutsideConnection>
<IOType>Embrio.NodeEngine.NodeIO.NumericNodeOutput</IOType>
<ShowGraph>False</ShowGraph>
<LinkedIOID>00000000-0000-0000-0000-000000000000</LinkedIOID>
<MinValue>0</MinValue>
<MaxValue>1</MaxValue>
<UseNegativeRange>False</UseNegativeRange>
<CanUseNegativeRange>True</CanUseNegativeRange>
</Output>

</Outputs>

</Node>

</Nodes>

<NodeDefinitions>
<Definition>
<Name>LiquidCrystal PCF8574</Name>
<SoftwareVersion>2.3.0.0</SoftwareVersion>
<UniqueID>b1bc6c86-5220-4ef5-9dc5-c6981070edd9</UniqueID>
<Description></Description>
<UseIOSet>False</UseIOSet>
<InputDefinitions>
<InputDefinition>
<Type>Embrio.NodeEngine.Definitions.StringNodeInputDefinition</Type>
<Name>Text</Name>
<UniqueID>7f4ee6f5-240d-4689-bf6a-d973a16d153b</UniqueID>
<IsOutsideConnection>False</IsOutsideConnection>
<IsInIOSet>False</IsInIOSet>
<IsUserAdded>True</IsUserAdded>
<ConfigurationOnly>False</ConfigurationOnly>
<DefaultValue></DefaultValue>
<DefaultMaxLength>10</DefaultMaxLength>
</InputDefinition>

<InputDefinition>
<Type>Embrio.NodeEngine.Definitions.TriggerNodeInputDefinition</Type>
<Name>Trigger</Name>
<UniqueID>b2c6ab44-a3e7-40a1-a728-709a1bdc2f16</UniqueID>
<IsOutsideConnection>False</IsOutsideConnection>
<IsInIOSet>False</IsInIOSet>
<IsUserAdded>True</IsUserAdded>
<ConfigurationOnly>False</ConfigurationOnly>
</InputDefinition>

<InputDefinition>
<Type>Embrio.NodeEngine.Definitions.StringNodeInputDefinition</Type>
<Name>Text 2</Name>
<UniqueID>c9b3dcd4-95b6-487b-a37d-16ca7f50a2fe</UniqueID>
<IsOutsideConnection>False</IsOutsideConnection>
<IsInIOSet>False</IsInIOSet>
<IsUserAdded>True</IsUserAdded>
<ConfigurationOnly>False</ConfigurationOnly>
<DefaultValue></DefaultValue>
<DefaultMaxLength>10</DefaultMaxLength>
</InputDefinition>

</InputDefinitions>

<OutputDefinitions>
<OutputDefinition>
<Type>Embrio.NodeEngine.Definitions.NumericNodeOutputDefinition</Type>
<Name>Connected</Name>
<UniqueID>ddfd26c4-c05e-4778-920b-04b00feb469c</UniqueID>
<IsOutsideConnection>False</IsOutsideConnection>
<IsInIOSet>False</IsInIOSet>
<IsUserAdded>True</IsUserAdded>
<NumericUseNegativeRange>False</NumericUseNegativeRange>
</OutputDefinition>

</OutputDefinitions>

<UpdateCodes>
<UpdateCode>
<UpdateCondition>Declaration</UpdateCondition>
<CodeImplementations>
<Implementation>
<Code>#include &amp;lt;LiquidCrystal_PCF8574.h&amp;gt;
#include &amp;lt;Wire.h&amp;gt;

LiquidCrystal_PCF8574 lcd(0x3F);</Code>
<Language>Arduino</Language>
</Implementation>

<Implementation>
<Code>#include &amp;lt;LiquidCrystal_PCF8574.h&amp;gt;
#include &amp;lt;Wire.h&amp;gt;

LiquidCrystal_PCF8574 lcd(0x3F);</Code>
<Language>CSharp</Language>
</Implementation>

</CodeImplementations>

<UniqueID>587370f1-7351-457f-b2a3-8539de018009</UniqueID>
</UpdateCode>

<UpdateCode>
<UpdateCondition>Startup</UpdateCondition>
<CodeImplementations>
<Implementation>
<Code>Wire.begin();
Wire.beginTransmission(0x3F);

int error = Wire.endTransmission();
if (error == 0)
{
Output_Connected = 1;

lcd.setBacklight(255);
}</Code>
<Language>CSharp</Language>
</Implementation>

<Implementation>
<Code>Wire.begin();
Wire.beginTransmission(0x3F);

int error = Wire.endTransmission();
if (error == 0)
{
Output_Connected = 1;

lcd.setBacklight(255);
}</Code>
<Language>Arduino</Language>
</Implementation>

</CodeImplementations>

<UniqueID>f8e30a54-d1bc-4242-b65a-afd42e80e1d7</UniqueID>
</UpdateCode>

<UpdateCode>
<UpdateCondition>EveryUpdate</UpdateCondition>
<CodeImplementations>
<Implementation>
<Code></Code>
<Language>CSharp</Language>
</Implementation>

<Implementation>
<Code></Code>
<Language>Arduino</Language>
</Implementation>

</CodeImplementations>

<UniqueID>82beff7f-e568-499a-a1d7-dda8940a5f31</UniqueID>
</UpdateCode>

<UpdateCode>
<UpdateCondition>Shutdown</UpdateCondition>
<CodeImplementations>
<Implementation>
<Code></Code>
<Language>Arduino</Language>
</Implementation>

<Implementation>
<Code></Code>
<Language>CSharp</Language>
</Implementation>

</CodeImplementations>

<UniqueID>95106f6e-6d02-4791-8765-a0577fdc7f0e</UniqueID>
</UpdateCode>

<UpdateCode>
<TriggerInputID>b2c6ab44-a3e7-40a1-a728-709a1bdc2f16</TriggerInputID>
<UpdateCondition>Trigger</UpdateCondition>
<CodeImplementations>
<Implementation>
<Code>lcd.home();
lcd.clear();
lcd.print(Input_Text);</Code>
<Language>CSharp</Language>
</Implementation>

<Implementation>
<Code>//lcd.home();
lcd.begin(16, 2); // initialize the lcd
lcd.noBlink();
lcd.clear();
lcd.print(Input_Text);
lcd.setCursor(3, 1);
lcd.print(Input_Text2);</Code>
<Language>Arduino</Language>
</Implementation>

</CodeImplementations>

<UniqueID>5066e99c-d256-41af-986f-942c30479973</UniqueID>
</UpdateCode>

</UpdateCodes>

<NodeColor>201,227,222,255</NodeColor>
<IsBuiltIn>False</IsBuiltIn>
<TouchesPin>True</TouchesPin>
<IsLanguageLocked>False</IsLanguageLocked>
<UseCanvas>False</UseCanvas>
<CanvasHeight>150</CanvasHeight>
<CategoryName>Project</CategoryName>
</Definition>

</NodeDefinitions>

</EmbrioCopy>



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