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June 17, 2024, 12:43:51 am


SMF - Just Installed!

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Messages - LulaNord

General discussion / Re: PCB's and SMD components
March 03, 2017, 10:54:46 am
Hi...i think easily you can find its tutorials. But i would like to tell you something. TFTs like these draw a very small amount of current, typically less than 10mA so I will supply it indirectly from a GPIO pin through the level converter. This allows me to control the order in which power is applied. Many TFTs prefer their I/O supply to come up before the panel supply and for safety I'm going to assume that this is the case with this device. Had the device required significant amounts of current I would have had to use a couple of transistors to switch the current on and off.