Matrix user forums

Hi Etsdriver,

Yes we have a pull-up resistor but we haven't tried to use a digital pin. We will try that next week!

Thanks for your reply

Hi jgu1, I'm sorry my fault! We tried some other pins but when when changed back to A0 we still measure no temperature or humidity. SampleSensor never gives a '0' and that's why the program never goes in the first loop. Why does it stay '1', (" No reply") on the display. We used a 4.7KOhm ...

Our DHT11 is not measuring anything, we used the example code and only changed the LCD display component macro. The SampleSensor keeps returning a '1' which resulsts in "No Reply" on the I2C LCD. We are using a PIC16F887 and the DHT11 is connected to the A0 pin. If anyone could take a look...

Hi Jorgen,

We didn't solder the pad is this really necessary? Isn't the default address 0x4E if we didn't solder the pad?
And what microcontroller and other components are you guys using because our LCD is still not doing anything.

Hi guys,
Not one of the programs is working for us.. Maybe we used a wrong schematic, we used a PIC16F887, 10kOhm pull up resistors, PICkit2 and we are using the same module as you guys..

Here is the program that I'm going to test tomorrow. I will let you guys know what it did or what it didn't..

Dear Benj, In the latest update there is a new LCD Component that supports this expander but it didn’t work for us.. We are now trying to get it working with our first method we tried by just doing it without the LCD component,( slave address(0x4E), register select ‘0’, the instruction and a stop). ...

I just found out that the address we are using is 0x4E, and that this is the right address.. So the address is not the problem.

Hi @jgu1, Nice, I find it so frustrating because it shouldn't be that hard.. @keejay I will post it here tomorrow because I don't have it on my computer.. The weird thing is that we're able to put the backlight on/off, but we can't do anything else.. I can't update my Flowcode for some reason, that'...

Hello everyone, We are trying to print strings on a I2C LCD for a school project, we tried a lot of different ways to do this but it just won't work. We are using a I2C LCD Display with a PCF8574T module. Could someone post a example code in Flowcode or help us in any other way. "LCDAansturing2...