These handy little handheld oscilloscopes have 1 channel and a small bandwidth, but here's the price too. For only you have a 200 kHz scope that can be connected to a 9V battery or any power supply between 8 and 10 Volts. The oscilloscope has a 2.4" color screen and a 12-bit vertical resolution. Furthermore, the scope offers a test signal output of 1 KHz.
This is JYETech fully assembled tech DS0150 15001K DSO-Shell (DSO150) DIY digital oscilloscope kit. As we can see, oscilloscope has a rarely high accuracy, which is unlike multimeter but allows us to see the processes in the dynamics. Earlier oscilloscopes consisted of vacuum-tube which were then replaced by the transistor, but the result is still displayed on the CRT screen. Eventually, they were replaced by their digital counterparts, smaller, lighter and more convenient. The collecting is certainly easy and even a schoolboy can do it in his own hands. The most important thing you have to do is choose a decent DIY Digital Oscilloscope Kit.
There are some great cheap oscilloscopes out there. For those who want a solution which will do the job with as little as possible DSO Shell or similar kits are available. Although now there are kits which are truly portable (e.g. with a battery), but I personally have got myself a semi portable device (which needs additional power supply). So I have decided to modify it and make it portable.
My oscilloscope is DSO Shell (DSO150) which can be obtained for around 25 USD (you can buy it on Aliexpress). It is a decent little thing which is good enough to get the job done (at least for me), but it has one issue it uses 9 V auxiliary power supply which was not included (in my case). While I had laying around 9 V power supply, it is not very convenient to use the scope while plugged it in. So, I have decided to make it portable.
Logically,to power this scope from a battery one will need: the battery (Li-Ionor Li-Po), a battery charger module and a boost converter (as theoscilloscope needs 9 V and the battery gives us only about 3.7 V).
So, what it needs to be done to make this scope portable? Firstly, when assembling the scope according to its instructions, one needs to opt out an optional power connector, otherwise there will be not enough space to put inside the battery charger module. Also, rotary encoder needs to be soldered directly to the main oscilloscopes board discarding additional encoders board to make more space inside. To make this change, I have bent encoders pins upwards so it can be soldered to the main board.
After putting additional electronics and the battery inside the scope, battery charger module has been connected to the battery which has then been connected to the boost converters input pins. Boost converters output goes to oscilloscopes main board. 2b1af7f3a8