LCS-1M - A Low-Cost Hobby Oscilloscope
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Fully functional single-channel development version.
For circuit design I can only recommend
breadboarding before building a real board - looks
messy but allows for quick changes and to try out
alternative solutions.
For circuit design I can only recommend
breadboarding before building a real board - looks
messy but allows for quick changes and to try out
alternative solutions.
The final design (V1.1) in its minimum version without
enclosure. Power connection is either a standard
connector, or a screw terminal. Probe connection can
be BNC (e.g. for coaxial grabber cables like in the
picture below) or screw terminals. Note: If you want
to mount the scope into the intended enclosure, do
not assemble the through-hole BNC connectors!
enclosure. Power connection is either a standard
connector, or a screw terminal. Probe connection can
be BNC (e.g. for coaxial grabber cables like in the
picture below) or screw terminals. Note: If you want
to mount the scope into the intended enclosure, do
not assemble the through-hole BNC connectors!
The LSC-1M in an enclosure, coaxial cables with
mini-grabbers as probes, and a wall-wart type
9V/300mA power supply. Also shown is the USB
download cable - needed when the computer does
not have an RS-232 serial port. Otherwise a simple
serial cable works just as well and is much cheaper.
mini-grabbers as probes, and a wall-wart type
9V/300mA power supply. Also shown is the USB
download cable - needed when the computer does
not have an RS-232 serial port. Otherwise a simple
serial cable works just as well and is much cheaper.
PC based scope GUI, displaying both scope
channels. You can make measurements on the
traces using the cursors (here: amplitude and
frequency - see green cursors in the display and
status bar at the bottom).
channels. You can make measurements on the
traces using the cursors (here: amplitude and
frequency - see green cursors in the display and
status bar at the bottom).
Same waveform (CH1, square wave), but now in
real-time frequency display. Great to find resonances
and oscillations and to analyze periodic signals.
real-time frequency display. Great to find resonances
and oscillations and to analyze periodic signals.
The final design, built into an off-the-shelf enclosure.
Added a status LED on the front panel. An enclosure
is a good idea because it protects the circuity to some
extent against electric discharges and also adds
mechanical protection, especially when carried
around.
Added a status LED on the front panel. An enclosure
is a good idea because it protects the circuity to some
extent against electric discharges and also adds
mechanical protection, especially when carried
around.
Classic X-Y display mode - channel 1 provides
horizontal deflection, channel 2 the vertical deflection.
Useful e.g. to check out reactive components.
horizontal deflection, channel 2 the vertical deflection.
Useful e.g. to check out reactive components.
LCS-1M user Sach Lamb has created a beautiful
enclosure for the instrument (see picture of his
prototype). The front panel is secured with screws
and the PCB pulls out in a drawer type arrangement.
The material is acrylic which has been painted (and
can be painted any color). Colored acrylics are also
available.
Sach plans to make this available as a kit so if you
are interested drop me an email and I'll get you in
touch with him directly.
enclosure for the instrument (see picture of his
prototype). The front panel is secured with screws
and the PCB pulls out in a drawer type arrangement.
The material is acrylic which has been painted (and
can be painted any color). Colored acrylics are also
available.
Sach plans to make this available as a kit so if you
are interested drop me an email and I'll get you in
touch with him directly.