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[开源硬件] 准备DIY个简易镊子LCR表

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yjmwxwx|  楼主 | 2021-8-10 15:45 | 显示全部楼层 |阅读模式
别的论坛有人引诱我搞LCR表,本来要做指南针的,只能先试试做这个了,正好我想练练画电路板,于是拿出去年做的电路改改,想改单锂电池供电,但是没低压差电源芯片,也没3.3V显示器和模拟开关,没办法只能搞成两块电池的了,我也没上过什么学不懂什么原理,所以我只会做不会说,说说容易做准做稳定我是没那个能力。。争取做的比去年做的强点吧,目标低成本能用就好。
目前只搞了个100KHZ的100欧档。

又要浇地了,10天前下的雨不管用啊,浇地回来休息休息再加功能。。

电路图
lcr.png

KICAD原理图和程序源代码

LCR.zip (133.29 KB, 下载次数: 11)

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LcwSwust| | 2021-8-11 09:21 | 显示全部楼层
楼主要不画个PCB吧,最近打样比较便宜,听说有的厂家免费。
尽量用贴片元件,显示屏可以用OLED减小体积。

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yjmwxwx|  楼主 | 2021-8-11 18:16 | 显示全部楼层
LcwSwust 发表于 2021-8-11 09:21
楼主要不画个PCB吧,最近打样比较便宜,听说有的厂家免费。
尽量用贴片元件,显示屏可以用OLED减小体积。 ...

我已经画过两次实际电路的PCB了,但是都在吃灰根本用不上,反而画的转接板用上了。。我这很多零件都是直插的,不可能为了免费做PCB再去买贴片零件,尽量用我有的零件搞DIY,今年已经花了300元买电子相关的东西了,以后不考虑再花钱买东西玩了,听各位网友的准备弃坑了。

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yjmwxwx 2021-8-22 10:37 回复TA
@wenleileilei :要啥没啥不能缺什么买什么,现在我这库存零件还有一些,先消耗下库存 
wenleileilei 2021-8-22 03:36 回复TA
越省钱越费钱 
yjmwxwx|  楼主 | 2021-8-14 23:08 | 显示全部楼层
加自动量程功能

LCR.zip (134.2 KB, 下载次数: 6)

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jiaotangz| | 2021-8-15 03:58 | 显示全部楼层
尽量用贴片元件,显示屏可以用OLED减小体积。


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yjmwxwx|  楼主 | 2021-8-19 18:57 | 显示全部楼层
写频率切换程序失败,LCD1602第一行第一个数据是频率,1=100HZ、2=1KHZ、3=10KHZ、4=100KHZ。第二个数据是阻抗,第二行是档位。演示测1K电阻和104电容,测电阻还行,测电容失败,不知道是程序原因还是电路原因。。。


截图_2021-08-19_18-56-30.png






本来想搞个电路简单的,有人提建议让我加放大。。加放大问题多多,原理感觉都懂,写一个档位一个频率手动切换档位的还行,搞多档位自动切换让我嘴说说能行,动手实际做遇到一些问题。。。关键不知道是程序有问题还是电路有问题,最有可能的是两样都有问题。。

失败啦
https://www.bilibili.com/video/BV1gQ4y1m7jH/

lcr.png


lcr.pdf (100.31 KB, 下载次数: 5)

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一叶倾城wwq| | 2021-8-27 11:40 | 显示全部楼层
楼主不要轻言放弃啊,我们等你更新

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yjmwxwx 2021-8-27 12:46 回复TA
这方案好像不太行。。 
luohao316| | 2021-8-27 17:25 | 显示全部楼层
祝你成功。坚持下去,即便不成功,你也能体会到在学校学的模拟电路,基本上是不能直接拿来用的。

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yjmwxwx 2021-8-27 21:48 回复TA
关键是模拟电路我都没学过。。。失败是正常的 
yjmwxwx|  楼主 | 2021-9-3 20:40 | 显示全部楼层
做的板子到了,感觉还不如飞线的,飞线的还有个外壳,有板子还是要做外壳,业余DIY实在是没必要做板子。

硬件也就这样了,软件好像没啥动力搞了,快要秋收了,练练身体准备干活,坐在电脑前写程序太伤身。

IMG_20210903_202035.jpg

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电路原理图和程序
lcr_1.zip (1.07 MB, 下载次数: 1)

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9999jim| | 2021-9-17 15:20 | 显示全部楼层
没事的时候多琢磨一下,半途就弃了,挺可惜的。要加油哦~

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