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    Learning Electronics for Everyday Practical Reasons Non-Professional

    No idea, I'd assume just a more modern version of the DSO150 (which is what I bought around 10 years ago) My good bench unit ($600 machine) went under in the 2013 flood and didn't have the funds to spend on another the same so the DSO150 was bought as a fill in. Never needed to replace it...
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    Learning Electronics for Everyday Practical Reasons Non-Professional

    And if the Op wants to look at say a pulse from a 555 basic timer...??? I'd have to disagree with you there. They're not all THAT difficult to understand and these days there are gazillions of youtube videos to get one up-to-speed, at least on a minimal level. That plus they're $40.....OMG....!!!
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    Learning Electronics for Everyday Practical Reasons Non-Professional

    A rather useful device is a component tester, cheap enough and simple to use. https://www.ebay.com.au/itm/393562650291 Another, also cheap as piece of test gear would be a small oscilloscope such as the DSO150 or equivalent https://www.ebay.com.au/itm/374308761594
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    4s lithium ion 16850 batterypack bms, charger, discharge.

    Yes No Discharge cut off is just as important as charging. Best you do some reading at battery university web site. For one thing it will negate having to repeat/explain every detail here. While you are at it, look up some basic English on structuring paragraphs and sentences for...
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    4s lithium ion 16850 batterypack bms, charger, discharge.

    Think you'll find those cells are 18650 but to expect such high continuous currents is flying in the clouds with the fairys.
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    After some advice please

    So.......claim a refund from the seller.
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    Vehicle exhaust sound project

    You won't get there with Arduino, at least for anything decent. As a run-on from your previous attempts/posts, try using one of the mass produced arrangements which operate via bluetooth. They have been around for probably 10-15 years now (could still be available as they were rather popular...
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    Modified wiring, your thoughts?

    No, it won't change anything. As I said above, the red lead is a potential lead. Meter monitors the current in the CT, that's it. There may be local authority issues if it was wired as in your photo (yuk ) and it was part of a local authority monitored system, but other than that , no change to...
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    Modified wiring, your thoughts?

    Why..?? It's a potential line, would make no difference what-so-ever.
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    Power Bank

    Depends how long you want it to run............... BTW..... 35000ma and 50000ma is not a capacity, it is current.
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    How To Read Spark Time On oscilloscope With High Resistance Probe

    Your figures are all (mostly) garbage along with the theory behind your explanations why. Look for blue smoke if your idea is to connect a scope to the HT. Blue moon must be out again I fear..........:eek:
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    How to wire radial fan with speed controller?

    It doesn't matter, either should work ok ( it's AC)
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    what kind of lcd is good？

    They're all "good", even a $4.00 unit.........So one that best suits your application ( which is not mentioned here) and pocket
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    How To Increase back EMF of Inductors?

    ???????? how do you expect collapsing current to flow here....
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    Kenwood DMX9708S Car Stereo no radio sound

    It'll be a programming issue 90%.........
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    Powering LED's with phone

    Former is a data transfer cable ( not made for any real current demand) just for signals. Latter are charging cables and possibly fitted with diodes. Best you go buy yourself a power pack before you do some irrepairable damage.
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    Troubleshooting Whirlpool Wall Double Oven

    I think you need to check your timer.........Op post is over 4 months old...long gone. Other than that, oven will not work at all if tripped on auto.
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    Energy metering with BL0937 on self made smart switch relay

    Sounds like, with your inexperience, you are about to grow wings or get handed a pitchfork.
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    Kenwood DMX9708S Car Stereo no radio sound

    Videos on youtube have some answers...... (programming issues)
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    Paypal transectional fee

    ??? transaction surely............. check Google, first up is an explanation, go from there. Be wary of the required/any variables.
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