In this video, I construct a 6-digit clock reminicent of those 80's sci-fi shows showing a timer on a bomb.
Link to the kit: https://www.ebay.com.au/itm/AT89C2051-Electronic-4-6-Digital-Clock-Display-Module-Components-DIY-Kits-9V-12V/193197215368?hash=item2cfb738e88:m:msnTVXMIe94aoRrWeQdnefg
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https://www.youtube.com/watch?v=n8vFqBmsOtE
Simple, easy kit from Jaycar to assemble. I've needed a separate +/-15 volt supply for testing preamps and my main supply for a power amplifier.
Kit is available here: https://www.jaycar.com.au/universal-power-supply-regulator/p/KC5501?pos=1&queryId=fb402e95bb57e2e2a8c0dac109237074&sort=relevance
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https://www.youtube.com/watch?v=2Wx74aliiUE
In this video, I discuss the final planning stage to this build before PCB production.
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https://www.youtube.com/watch?v=-m9HTJZN3EY
Picked these up for a song! How good do they sound? Not too bad.
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https://www.youtube.com/watch?v=8FzbMpQ6TPE
In this video, I put all the electronics (preamplifier, power amplifier, power supply & speaker protector units) into a 2U rack mount case and drill the front panel. Unfortunately, the lettering I decided to use to mark the front panel didn't work out so good - but, that'll be addressed in Part 2.
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https://www.youtube.com/watch?v=Rm1mn9lixPo
As I said in the previous part not to build the circuit as I have yet; this is the reason why. Apart from blowing up transistors during testing, I also managed to eject the electrolyte out of capacitors due to my own stupidity.
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https://www.youtube.com/watch?v=GxWFP9ZCQvQ
This one was kind of a disaster. An important component was missing, the 32.768kHz crystal and a PCB corner was broken (probably in transit). However, I did get it to work... to a point.
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https://www.youtube.com/watch?v=EKHOSpW1eko
First video for August! The problem of my power amplifier design overheating has been solved, and it was just a simple fix.
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https://www.youtube.com/watch?v=i6TLEaiHebU
Wasn't going to upload this, but I don't mind sharing my fails. I hate SMT (surface mount technology). Without the right tools, such as a hot-air station, microscope and patience, don't bother.
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https://www.youtube.com/watch?v=WkLiOisLmtE