| The Shop > Electronics & IC Programing |
| Digital oscilloscope project/kit |
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| PK:
--- Quote from: John Swift on January 22, 2016, 06:32:44 PM ---decided to assemble my DSO138 oscilloscope kit this afternoon it worked first time even though the solder didn't flow that well on the surface mount components - an excuse to buy a smt work station I think ? --- End quote --- Heat and flux are the key, use plenty of both and avoid lead free solder. --- Quote ---and the trace shows some noise from the power supply http://forum.banggood.com/forum-topic-61279.html --- End quote --- We keep a bag of 1000uF caps. Mostly for investigating these sorts of problems. But sometimes, on a one off job, they just get left in place. |
| RobWilson:
--- Quote from: wheeltapper on January 17, 2016, 04:05:07 PM --- :D :D :D I've spent the afternoon assembling the component tester and it's case and it appears to work perfectly. :ddb: :ddb: :ddb: :ddb: there weren't any :zap: :zap: either. trying to figure out the calibration was a bit of a bugger, there are online instructions but they aren't very clear...................or I'm thick :bang: choose whichever you like. Roy. --- End quote --- Nice one Roy :thumbup: , I added the three fly leads to mine which made calibrating easier :zap: --- Quote from: John Swift on January 22, 2016, 06:32:44 PM ---decided to assemble my DSO138 oscilloscope kit this afternoon it worked first time even though the solder didn't flow that well on the surface mount components - an excuse to buy a smt work station I think ? for now I've used the switches provided but may change them when I mount it in a box modding is a must ! two things needs investigating the variable capacitor C6 does not appear to do much and the trace shows some noise from the power supply http://forum.banggood.com/forum-topic-61279.html John added picture of screen showing the noise on the trace - not too bad considering its a £15 kit --- End quote --- Hi John , Some how I just knew you would find putting the DSO kit together to be a walk in the park :thumbup: do you think the noise problem is fixable ? Oh yes modding is a must lol , when you find a source of good quality switches could you post a link to them please so I may purchase some replacements :dremel: Cheers Rob |
| wheeltapper:
Hi Rob. this is mine in it's case. and here are the flyleads I modded on to a 3 pin header that plugs into the front socket. Roy. |
| RobWilson:
Hi Roy , That looks great :thumbup: ,methinks I should have maybe went for the one with the enclosure . Cheers Rob |
| hopefuldave:
--- Quote from: John Rudd on January 16, 2016, 11:17:57 AM ---You managed to chip off all the slag around those welded joints then Rob? :lol: Gotta admit, that seller does have quite a few good projects... :coffee: but I dont really need any more test gear...... Owon double beam digital scope with lcd display 2 x 30 v 3 A twin channel power supplies Digital frequency counter Lcd scope with frequency meter/ waveform generator 3 x UT 50 dvms etc etc..... Aint got a bench big enough....or room for one :lol: --- End quote --- Wot, no Spectrum Analyser? RF signal generator? Counter/Timer? GPIB controller? What I *could* use at the moment is a decent / cheap LCR meter, I have to take stuff to work for one of the ladies to measure (overkill really, 6-digit precision...) Dave H. (the other one) |
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