While I wait you can see in the bottom photo the bunch of tools without a home. In the pictures below I have circled in red the four mesh holders I have recently installed. They’re black on black so hard to see, sorry about that.
The two on the left are clipped on with zip ties. The other two are screwed in, one screwed into the second drawer and the other to some load bearing dowel I also installed today.
I’m a bit paranoid about the shelf my oscilloscope is installed in will come away from the wall, so I have buttressed it with a dowel I had them cut to size for me today at the shop (307mm, exactly).
In this video we do the 13th project from the Maxitronix 20in1 (the Sensor Robot 20): Ferromagnetic Substance Detector.
In this project we use the reed switch to detect magnetic material. We use an astable multivibrator to generate a tone which sounds when magnetic material is detected.
We use the UNI-T UTi260B Thermal Imager to inspect the circuit board during operation and see the transistors for the astable multivibrator dissipating the most heat.
We also use a breakout board to add a volume control to the buzzer and to substitute a LED for the buzzer.
I really enjoyed this project, I think it’s the best one so far!
Thanks very much for watching! And please remember to hit like and subscribe! :)
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I accidentally happened upon this while surfing the interwebs this evening and I thought it was a great hack: EXTRA HANDS FOR SOLDERING – OCTOPUS. This person makes a very respectable third hand out of a few scraps.
I thought it might be nice to kick off the new year with an actual electronics project, as that is what this channel is supposed to be mostly about!
I translated the instructions from Chinese to English, and those are here: TJ-56-428. These include instructions for use of the complete and fully assembled clock.
This was a great chance to try out my new METCAL PS-900 Soldering Station and I am pleased to report that I am very happy with my new soldering iron! It is a pleasure to use.
The heart of this circuit is the STC15W404AS which is a microcontroller! It has been pre-programmed with the clock functionality, there was no software or source code that shipped with the kit.
Update: my mate Joe pointed out that I had the case on back-to-front which you can see me fix here: https://youtu.be/IyJ3IHgRfiw
Thanks very much for watching! And please remember to hit like and subscribe! :)
Following is a product I use picked at random from my collection which may appear in my videos. Clicking through on this to find and click on the green affiliate links before purchasing from eBay or AliExpress is a great way to support the channel at no cost to you. Thanks!
In this video I do the 12th project from the Maxitronix 20in1 (the Sensor Robot 20): Magnetism Detector.
In this project we control a BJT transistor with a magnetic reed switch.
We use the thermal camera to observe heat in the transistors and LEDs during operation.
This is a plain DC circuit with no signals so there was no call for measuring anything with the oscilloscope.
I got myself a little confused about normally open and normally closed circuits during the video, but I think I was clear enough about that in the end.
Thanks very much for watching! And please remember to hit like and subscribe! :)
Following is a product I use picked at random from my collection which may appear in my videos. Clicking through on this to find and click on the green affiliate links before purchasing from eBay or AliExpress is a great way to support the channel at no cost to you. Thanks!
This is great: Wireless High Resolution Scrolling is Amazing. In this video the author makes a special purpose mouse wheel for scrolling documents. I think this project is just a little bit beyond my current skill level, but maybe one day I will be able to build it.
This looks like exactly what I need for a project I’m planning. I want to connect my WiFi router with a relay between its power source. I can then trip the relay to reboot the router. I need to do this every couple of months and doing it manually is a pain because I have to walk into the other room to do it.
