Introduction: Mini Oscilloscope Kit (part 1)
Where to start is always the problem , it's easier to plan an electronic device then write about it.
OK, lets start with the "blueprint" usually before I start a new project I make some scribbles to keep in mind what I'm planning to do, this "blueprints" are not very exactly my products grow when I make them.
This is the plan.
- small kit for an DSO I will use one from banggood.com (still waiting for delivery)
- battery powered, I have a LiIon Battery laying around (I bought them very cheap at MediaMarkt)
- I want to build another case that fits in size and look another one I build for an electronic load. The load was my first instcrutable I found here and build. It is from wigman27 and very useful. the great electronic load I posted here also the pictures of my build with the wood case...
- want to use it also as powersource for different voltages (3,3V / 5V / 12V)
- use my own Power Switch with LED (my first instructable I wrote) switch with LED
- cheap is possible, so most of the parts are leftover from other projects
Step 1: Ordering the DSO
I order it at banggood.com a Chinese shopping site I like it more then the other shops like aliexpress. The quality until now for all the kit's I order here was great and even they didn't include any instructions I was always able to build the Kits.
I also bought some switches and LED's and prototype PCB there.
They have more funny thinks there for very reasonable price.
Still waiting for the DSO, and some other Parts for nice projects, I'm running out of ATMEL 328P (the Arduino Chip)
Step 2: Prepare the Parts
I already have some parts laying around. This is what I used them for.
- LiIon Battery 3,7V 6000mAh
- USB Charger
- StepUP Converter to get 12V
- 7805 TO220 (Big One) it is a linear voltage regulator with fixed voltage for the 5V rail
- LM317 TO92 (Small One) it is a linear voltage regulator with variable volatge for the 3,3V rail
- Switch and 5mm LED for the power Button see my other instruction
- pin header 10 pins I will use this in the front panel to get out the voltage rails to a prototype board
Step 3: Why I Want to Build This Like This
1 . I have a DSO but want a small one that is battery powered
2. Of course there are a lot of pockets DSO they are about 100€ but hey it is no fun to buy them finished
3. I like wood cases, hey do you ever see a DSO in a wood case?
4. I like the size and the look of my Case for the electronic load, so I want more in labor stuff in those cases you can see I also modified the electronic load with a LiIon Battery.
5. It's fun to "make" thinks
This pictures I just show you the way it will go and my messy workplace, it is not many place here but hey I can do my hobby in living rooms.
Step 4: What Will Be Next
After I received the Kit I will give you a full review and a lot of pictures while assembling the Kit and making the case with easy tools, no fancy Laser Cutter or 3D Printers ..... just with Glue, Knife, ......
Those both pictures show some old projects. I really like wooden cases.... ;)
Give me a Big Thumbs up and have fun with my instructions / story's / ideas
See you next time...
Step 5: April 1
this is not an April Scherz (that is what we say for April first in German)
I just get my 4mm Plywood today so I can start to build the case, normally I just start to cut and glue and then see what I need next. I know this is not the best way to build a case but hey it works for me.
But this time I want to share my build with you so I started to think which parts I need and so I draw them in PowerPoint.
Maybe now you will ask."Powerpoint for CAD! Are you sure?"
Yes you hear it right for simple Design I use Powerpoint, for me it is precise enough and work well and my plywood I have is at the Size of one DinA4 page sp everything fit perfect. Hey try also some CAD software but it is total overkill for this.
I think tomorrow I can show more of the process to build the case.Here are the files for you if you want to use, maybe when I have enough time I will copy the Parts to a CAD software so it is more useful for you.
Step 6: Cut the Parts From 4mm Plywood
I just lay the printout on the plywood, so it was more easy to cut them out, I'm using a cutter knife to cut it out so no special saw needed. Of course when you can use a Laser Cutter it would be much better, but hey who has a Laser cutter at home.
I also cut some support parts just about 10mm x 10mm where I use to make the box more stable.
Step 7: Glue It Together
On the Bottom I glued the left and right wall just in 90° so this parts will be fixed I also added to first 4 support parts, I think the Front I will make screw able so it can be removed maybe also the back, but not sure yet.
I used some heavy boxes to hold the parts together while the glue dry's, I used "Uhu Hart" but the white wood glue should also work.
Now it is really time that the electronic parts arrive.
Step 8: Some More Parts and Ideas
I just order a few of this, I already have some of the step-up and step-down converters but they don't have any current protection, this module sound good, so I think is better then a LM317 for regulate the voltage.
For about 3,60€ including sending it sound pretty cheap.
It won't be only a DSO it will be a mobile electronic something something bench power dso supply.....
the only disappointing think is that it take so long to order from china, here in Germany we are really spoiled allmost everything else I order at Internet shops is there almost the next day.