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您好，我这有个问题咨询下，我这想让香橙派引脚去检测一个大概1Hz的5V高电平，当外接部分发出5V高电平时，GPIO检测到上升边沿触发，以此记录这个5V高电平的发出时间。问题是，香橙派GPIO能直接外接5V电平吗？我这没什么空间去做5V降到3.3V的降压了，如果不能直接接5V，能否通过引脚连一个分压电阻再连5V电平呢？分压电阻又应该多少合适呢？
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您好，我这有个问题咨询下，我这想让香橙派引脚去检测一个大概1Hz的5V高电平，当外接部分发出5V高电平时，GPIO检测到上升边沿触发，以此记录这个5V高电平的发出时间。问题是，香橙派GPIO能直接外接5V电平吗？我这没什么空间去做5V降到3.3V的降压了，如果不能直接接5V，能否通过引脚连一个分压电阻再连5V电平呢？分压电阻又应该多少合适呢？
The text was updated successfully, but these errors were encountered: