arduino uno兼容的SD卡有哪些啊我试了好几个都不能用.......
RT我都快崩溃啦:Q
:funk::funk::funk::funk::funk::funk:没有搞错吧 是不是sd模块坏了 小猪会轮滑 发表于 2013-3-24 16:36 static/image/common/back.gif
没有搞错吧 是不是sd模块坏了
没有啊插到电脑上能用啊:L 楼主至少要把程序、硬件连接方法还有卡的型号发上来 大家才能帮你找原因吧:L 2G或者以下的SD卡或者TF卡我这里用了几个都没出现啥问题 问题解决了原来是SPI IO口电平不匹配问题导致的:lol 逆袭de秘银 发表于 2013-3-30 14:06 static/image/common/back.gif
问题解决了原来是SPI IO口电平不匹配问题导致的
怎么解决的啊 万马奔腾 发表于 2013-5-10 22:55 static/image/common/back.gif
怎么解决的啊
中间加了个电平转换模块 逆袭de秘银 发表于 2013-5-13 22:12 static/image/common/back.gif
中间加了个电平转换模块
你是高人 ，你是自己制作的电平转化模块？我是直接重新买了个模块 ， 万马奔腾 发表于 2013-5-13 23:23 static/image/common/back.gif
你是高人 ，你是自己制作的电平转化模块？我是直接重新买了个模块 ，
淘宝上有卖电平转换模块的 逆袭de秘银 发表于 2013-5-14 09:31 static/image/common/back.gif
淘宝上有卖电平转换模块的
microduino-SD是自带电平转换模块的。 逆袭de秘银 发表于 2013-5-14 09:31 static/image/common/back.gif
淘宝上有卖电平转换模块的
哪种 能否给个链接 万马奔腾 发表于 2013-5-14 19:49 static/image/common/back.gif
哪种 能否给个链接
我买的就是这个http://item.taobao.com/item.htm?id=16575338494 : From my Arduino, if I feed the card from the 3.3 V output, I get the
Card type: SD2 Could not find FAT16/FAT32 partition. Make sure you've formatted the card
It only works on 5 V (but the card type becomes SDHC). So I've tried to feed my card with another 3.3 V/5 V supply (my Arduino is grounded to this supply as well), but this is only working on 5 V. On 3.3 V my card isn't detected. My wires to the SD card are about 15 inch. I don't know if it can affect it drastically, but this is the only 'weird' thing about this circuit. By the way I naively think my 3.3 V supply should handle that.
把3.3V的供电改为5V供电就可以了，我刚解决了问题 CMOS电平-TTL转换问题
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