Hello,
I was wondering whether it is possible to connect a 4x7-segment led displayer to Zedboard for simple multiplexing purposes. If so please be so kind and explain a little bit of it, I'm totally new to Zedboard.
Hello,
I was wondering whether it is possible to connect a 4x7-segment led displayer to Zedboard for simple multiplexing purposes. If so please be so kind and explain a little bit of it, I'm totally new to Zedboard.
Let me be more specific, I got 2 of these
http://www.tandyonline.co.uk/media/wysiwyg/276-078-Two-Digit-7-Segment-Display-pins.png
So I have 4 digits and I want to use multiplexing, what I came up with is D1(a) D2(a) D3(a) D4(a) tied up together and same for other segments, it gives 8 bits required + 4 bits for common cathodes. The question is whether I can use JA1-JA10 + JB1-JB2 to be inputs for diodes in series with resistors and an output for common cathodes? To lower the current I can use bipolar transistors and control their bases, current for the base is then about 0,05mA. Is it a appropriate solution for connecting this led displayer?
Let me be more specific, I got 2 of these
http://www.tandyonline.co.uk/media/wysiwyg/276-078-Two-Digit-7-Segment-Display-pins.png
So I have 4 digits and I want to use multiplexing, what I came up with is D1(a) D2(a) D3(a) D4(a) tied up together and same for other segments, it gives 8 bits required + 4 bits for common cathodes. The question is whether I can use JA1-JA10 + JB1-JB2 to be inputs for diodes in series with resistors and an output for common cathodes? To lower the current I can use bipolar transistors and control their bases, current for the base is then about 0,05mA. Is it a appropriate solution for connecting this led displayer?