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适合业余爱好者DIY高精度数字电桥 2013-07-15 ======================================================================== 加入CMS015 TFT驱动,定意显示界面为: FUNC: R RANG: 40 FREQ: 100Hz C 1K 1000Hz L 10K 7800Hz AUTO 100K GAIN: 1 MODE: S COMP: xxxxK 3 P xxxxF 9 xxxxH 27 Zs 1.23456789 Zp 1.23456789 Rs 1.23456789 Rp 1.23456789 Cs 1.23456789 Cp 1.23456789 Ls 1.23456789 Lp 1.23456789 Q: xxxx D: xxxx &: xxxx 2013-07-2 ======================================================================== 设M,X,R,F,V六个功能键 功能键M: 功能开关,按下键按 电阻(R) ->电容(C) ->电感(L) ->自动(AUTO) 顺次轮换切换,长按功能键则进入系统设置(S)模式。 模式键X: 串并联切换开关,按下键按 串联(S) -> 并联(P) 顺次换切。 量程键R: 量程开关,按下键按 40 -> 1K ->10K ->100K 顺次轮换切换。 频率键F: 频率开关,按下键按 100Hz -> 1000Hz -> 7800Hz 顺次轮换切换。 清零键C: 清零,当表笔开路时,开路清零,当表笔短路时,短路清零, 注意短按只清当前量程的,长按(1秒以上)则清所有量程。 数值键V: 记忆比较功能,按下记录当前测量值并进入记忆比较模式,在这一模式下,之后的测量值都会和记忆值比较交显示偏差绝对值及百分比,再按则退出记忆比较模式。 2013-06-21 ======================================================================== 重写程序,搭建初步架构 版本3.0 ======================================================================== 增加TL081的PCB文件,用AD10重画电路图,改为恒阻自动电桥,硬件升级到3.0,程序是矿坛gyp2000的 1602 V5.5。 版本2.0 ======================================================================== 许老师的初始版本 https://www.crystalradio.cn/thread-231933-131-1.html https://bbs.38hot.net/read.php?tid=13531 https://www.ourdev.cn/thread-5152439-1-2.html
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