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asp211's avatar
asp211
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3 years ago

DE10-Lite LED segment seems broken

Hello everyone, I recently bought a DE10-Lite FPGA board, and it first seemed to work fine. However, a few weeks later, I notice that one of the seven segment LEDs are broken (just one of the segmen...
ems37ufl's avatar
ems37ufl
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2 years ago

I'm using the DE10-Lite devices in a course for the first time this semester. (I am a faculty member.) At least a dozen students have had segments on the 7-segment displays fail. Many students have had multiple failures. Other students have reported that using the other (non-7-segment) LEDs have caused state machines to fail to operate correctly. Electrically and logically this makes no sense, assuming the schematics are accurate. But using a tri-state buffer between the outputs and the LEDs (with either a high or high impedance going to the LED) seems to remedy the issue.