How I fixed a cheap servo

-

for first attempt work servos, got pair of cheap towerpro sg-90s ebay.  went through sample code , 1 thing wouldn't work - 1 of servos worked fine other didn't go through entire range of motion , made clicking sound on side.

luckily there bunch of videos out there showing what's inside servo.

imagine clock; when servo first powered , has no input, think of horn pointing 12 o'clock.  servo pointed 12 , turned left 9 , right 3 no problem.  bad 1 start off pointing 10.  go 3 ok bind when tried turn past 9.  (there small peg on gear stop it; peg should pointing 12 @ power-up.)

this wasn't code problem, opened them both see going on.  in bottom of bad servo, there 3 small wires soldered tiny terminals.  , there solder bridge between 2 of them, wasn't there in one.

a quick snip diagonal cutters , problem solved. 

good shooting. feedback pot.



Arduino Forum > Topics > Robotics (Moderator: fabioc84) > How I fixed a cheap servo


arduino

Comments

Post a Comment

Popular posts from this blog

Authentication error while password reset - Raspberry Pi Forums

-
Image
hello, have tried in rpi changing code: select all /boot/cmdline.txt code: select all dwc_otg.lpm_enable=0 console=ttyama0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait code: select all dwc_otg.lpm_enable=0 console=ttyama0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait init=/bin/sh , enter code: select all passwd pi in #prompt, if enter new password says: code: select all authentication token manipulation error code: select all password unchanged . do now?????? try this: http://www.raspberrypi-spy.co.uk/2014/0 ... -password/ raspberrypi
Read more

opencv3, tbb and rasp pi 2 - Raspberry Pi Forums

-
Image
has installed opencv 3.0.0 tbb enabled on latest rasperian on pi 2? followed guide here viewtopic.php?f=28&t=110025&p=761255&hi ... v3#p761255 differences made enable tbb via cmake... added build , tbb options shown.. cmake -d cmake_build_type=release -d build_tbb=on -d with_tbb=on -d cmake_install_prefix=$(python3 -c "import sys; print(sys.prefix)") -d python_executable=$(which python3) .. patched current, dependencies installed far can tell.. cmake reports going install , old version of tbb... -- use tbb: yes (ver 4.1 interface 6102) make process fails linking problem don't understand fully, [ 66%] built target opencv_features2d scanning dependencies of target opencv_test_flann ../../lib/libopencv_imgproc.so.3.0.0: undefined reference `tbb::task_group_context::cancel_group_execution()' ../../lib/libopencv_imgproc.so.3.0.0: undefined reference `tbb::interface5::internal::task_base::destroy(tbb::task&)...
Read more

small ethernet problem - Raspberry Pi Forums

-
hello, after conventional installation raspbian noobs v 1.4 raspberry pi 2 . how can configure internet connection on raspberry me download apt. (my ethernet cable connected directly ethernet switch (i'm @ university)) attached configuration of pc internet connection. http://i.imgur.com/budyoeb.jpg thank much, google configuring rpi static ip address. use same ip numbers see on pc. not try have both pc , rpi connected network @ same time. raspberrypi
Read more