簡單伺服測試儀電路--Simple Servo Tester
click here to download schematic in pdf
This is a simple servo tester which will comprehensively test the capabilities of almost any modern servo. It has two pushbuttons, CENTRE and SWEEP and a potentiometer which works as follows:
- CENTRE Does exactly that, centers the servo, afterwards the potentiometer determines position.
- SWEEP Sweeps the servo back and forth at a rate determined by the potentiometer setting.
The PIC uses its internal timer to set up a constant frame duration of 20ms and the on/off ratio is set by the user.
Have Fun
ed
PCB board (download it below)
suggested panel decal
Parts List
R1 = 1K
R2 = 10K
R3 = 82R
R4 = 10K
R5 = 5K potentiometer
C1 = 27pF
C2 = 27pF
C3 = 100nF
D1 = 4,7V zener diode
Q1 = 10MHz crytal
IC1 = PIC12F675
當(dāng)電路中的信號(hào)發(fā)生突變(特別是數(shù)字信號(hào))時(shí),信號(hào)經(jīng)常會(huì)出現(xiàn)一個(gè)電噪聲。這個(gè)噪聲在一般環(huán)境下不會(huì)對(duì)外產(chǎn)生影響。但是在某些特殊情況下,該信號(hào)會(huì)對(duì)外產(chǎn)生較強(qiáng)的傳導(dǎo)干擾,進(jìn)而影響其他電路的正常工作
關(guān)鍵字: 電路 數(shù)字信號(hào) 噪聲當(dāng)汽車進(jìn)行轉(zhuǎn)彎時(shí),司機(jī)打開轉(zhuǎn)向燈,尾燈會(huì)根據(jù)轉(zhuǎn)向依次被點(diǎn)亮,經(jīng)過一定的間隔后,再全部被消滅。最后不停地重復(fù),直到司機(jī)關(guān)閉轉(zhuǎn)向燈。
關(guān)鍵字: 汽車尾燈 電路 轉(zhuǎn)向燈