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Forum Index : Microcontroller and PC projects : SDI problems
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Bizzie Senior Member Joined: 06/07/2014 Location: AustraliaPosts: 185 |
Not sure if I should start a new topic or use matherp's - MM2: 2.4" SPI Colour Touchscreen topic. Anyhow here it is as a new topic! I have purchased 4 : TFT 2.4" Touchscreens from the link on matherp's topic. I am having no luck in getting 2 of them to work (Not game to get the others out of their packaging). They are breadboarded as the following image shows. Can anyone see any problems? I have the jumper referred to closed and I measure 3.3v on pin 1 of the display. As this is the first time I have used SPI I have no idea what voltages I may be able to measure on other pins. How do you best solve a problem like this? I have successfully loaded all 3 of matherp's programs using MMedit into the uMite and can also edit etc from TT so I know it is not a uMite problem. uMite is running V4.6 . Hoping someone can help. Rob White |
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BobD Guru Joined: 07/12/2011 Location: AustraliaPosts: 935 |
Rob There have been several problems successfully fixed by finding that the breadboard wasn't making good contact, only intermittent contact, or no contact at all. Have you checked this? Bob |
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TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 5923 |
I can't see your connection to the LED pin. I think it's pin 23 on your breadboard and needs a ~18 ohm to 5V or 3.3V Jim VK7JH MMedit MMBasic Help |
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Bizzie Senior Member Joined: 06/07/2014 Location: AustraliaPosts: 185 |
I was aware of this issue and rewired with new wires in a different position on the board. Rob White |
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Bizzie Senior Member Joined: 06/07/2014 Location: AustraliaPosts: 185 |
Thanks Jim That did the job!! Knew it would be simple. Fixed in less than half an hour Internet's great isn't it. Rob Rob White |
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