DDS generator, my version of the Chinese module housing.
I have been using the Chinese DDS generator module for some time, I got tired of the makeshift of this device, the lack of a housing, a spider power supply from some li-ion batteries and converters, so I decided to sort it out inspired by previous publications on the electrode.
Having some time and electro-scrap metal, I made the housing using metal sheets and a front from a CD-ROM drive. I cut out the dibond front panel and glued it to the converted front of the drive.
Originally, for menu navigation, I wanted to use ready-made keys from recycled material, but they turned out to be flimsy and I made the ring, keys and knobs by turning from aluminum. The + 12V, -12V, + 5V power supply was made on a universal laminate using LM 78XX and LM7912 stabilizers and a 2x12V transformer. Having little space on the front panel where only a small key can fit, I placed the power switch on the back next to the transformer. On the smoky display pane, I stuck the inscriptions on the foil concerning sockets and knobs, with the backlight they are sufficiently visible. I did not describe the navigation keys because you intuitively know where the top, bottom, left and right are, in the middle OK and this tiny one is a reset.
I do not include the diagram because I don't have it. I often use enclosures from drives to pack my various devices. The photos show the effect of my work
and that's how it found a place on my shelf ;)
Comments
Interesting design, although I would have reservations about these protruding display frames. It breaks down all the aesthetics. [Read more]
These protruding frames are in my earlier devices, I was already rolled over for these frames ;) that's why I didn't make this mistake this time and the display is too fast. [Read more]
I have to clean up my DDS, and the idea of an optical drive box is a great idea. Plus for that. [Read more]
I like it very much. I like it this way. The device is not a Christmas tree to watch, but something that is often exposed to accidental damage while working. this case certainly meets this condition. By... [Read more]
As for such a cheap, I am amazed by its indications, they coincide to 1Hz. I temporarily connected the oscilloscope and both devices show the same ;) https://obrazki.elektroda.pl/7904436300_1613407392_thumb.jpg... [Read more]
that's great :) And can you tell me what the generation range is? [Read more]
It's a well-known construction, see the description here https://www.dropbox.com/s/z0ktc666sct1gj1/H11887install.pdf?dl=0 and here https://www.electronics-lab.com/project/dds-function-generator/ ... [Read more]
Thanks for the links :) I have already tracked the Chinese and I will make a housing similar to yours. [Read more]
But maybe security is more concerned than the author of the thread. 230 VAC fits onto a universal unit hanging millimeters above the metal casing. Well, some piece of paper underneath ... And the protective... [Read more]
Thanks for your vigilance ;) I've thought about it too, but it's not too bad ;) There is quite a thick plastic plate on the spacers under the entire plate of the power supply, not a piece of paper,... [Read more]
Well, but from the place where the blue wire is soldered to the board, and the mounting screw to the housing is maybe ... with 0.5mm? And it should be 10mm. The switch is also probably not adapted to ... [Read more]
The switch is really delicate, but with a 2.5W transformer, its load current is around 10mA and it works fine, I had trouble finding a sufficiently small fuse ;) The distance of the cable is 6mm and it... [Read more]
As for the switch, I meant the operating voltage - in terms of insulation to the metal button rod. [Read more]
I understand, I can roll a plastic rod connector and switch, it's 5 minutes of work ;) I'll think about it again. Thanks for your comments. I corrected, the distances higher and insulated, I... [Read more]
Personally, this type of housing does not appeal to me (I have been against upcycling for some time), but overall it looks really neat and I believe that the author likes it, a plus. The second - a very... [Read more]
Nice. Plus from me for making a power switch with a long pusher. A solution known from factory equipment (Philips or Hameg). This allows you to move away with the power supply and power switch and 230... [Read more]
Not only. For me, this generator lacks a smooth frequency change, which in the case of "digital" waveforms does not bother me, but in the audio range (eg 20Hz-20kHz) it would be useful. [Read more]
I am not sure whether it is in the case of a metal housing, where theoretically there may be potential on the elements susceptible to touch obligatory is to route the protective conductor and ensure... [Read more]
Very nice neat workmanship, fits nicely with the rest of the equipment. A plus for aesthetics. [Read more]