Welcome to a new InTheMail, the series that will touch both your passion for electronics and your bank account at the same time. We’re gonna start with this set of tweezers from Vetus. A few months ago I was considering buying some more expensive electronics tweezers but the good ones are really expensive when you include shipping as well so in the end I decided to give these a try. I’ve had Vetus tweezers in the past and some were good some were bad. This time I asked multiple sellers on Aliexpress if the tweezers are original Vetus or not, some responded and promised their goods are original. Coincidentally or not those who said their products are original also had higher prices. In my experience with suppliers, they never lie about the origins of a product if you directly ask them so I tend to believe that what I have here are genuine Vetus tweezers
Welcome to a new voltlog, today we’re doing a teardown of an automotive ECU which stands for engine control unit. Every car has one of these, unless it’s very old and doesn’t have electronic control of the engine. This is a small computer that reads a bunch of sensors like air temperature, air pressure, fuel pressure, rpm, crank shaft position, pedal position and various others and then based on these inputs will calculate various parameters and control outputs like the fuel pump, injectors, spark plugs, etc.
I’ve never opened one of these up but we should find something interesting to see in here, at least from the point of view of construction methods because these things need to run smooth even in the hardest conditions like very hot weather or very cold weather as well as endure water pouring right onto them all while withstanding high levels of mechanical shock and vibrations. So it’s likely we will see a nice seal on the enclosure, as well as conformal coating on the inside.
What we find inside might differ a lot depending on the generation of the ECU, older ones having to use more discrete components, while newer ones are integrating a lot of components into a single chip. I’ve worked briefly for Freescale which was building such a newer chip in partnership with BOSCH and it was amazing the level of integration they had: everything from multiple mosfet drivers, differential amplifiers for current sensing with programmable gain, dc-dc boost converter as well as a multi core processor was all integrated on the same chip, as you can imagine this can save quite a bit of money on the final build so that’s the direction things are heading.
The one I have here is from an Audi A6 model C5 which was manufactured between 1997 and 2004, this one is likely made in 2001, judging by a date code I see on the label and it’s from a 2.5 liter TDI engine. I got it from one of these auto dismantling businesses from ebay, I don’t know if it’s ever been opened before, but we will find out soon.
Welcome to a new InTheMail, the series that will touch both your passion for electronics and your bank account at the same time. We’re gonna start with this small and modern looking remote control. I actually like how this feels, even though the cost was just $3 shipped it just feels well built, the quality of the plastic is nice, the buttons have a nice click and it comes pre-loaded with batteries.
You can then use this remote control to open the garage door or whatever you like to control. But do note that this will not work with all 433MHz remotes, because some remote controls employ some form of coding, to protect the signal from being easily cloned. Take for example the automotive key fobs, some of those work on 433MHz but you won’t be able to clone them with this remote. Nonetheless, useful for creating a copy of your garage door remote control or even better, you could hack this remove and integrate it into your car dash console on some of those unused button slots. That would be a cool project.
If you are a frequent viewer of the channel you’ve probably heard me say that I need a crimping tool and people recommended I should get the good stuff, Engineer being a recommended brand, those being more expensive but having precision machined jaws that produce perfect crimping every time. Other people recommended some cheaper alternatives but I went with none of those options, I got this Paron branded crimping tool, from banggood which sent the product for free for this review.
This particular crimping tool is model number JX-D5 and has a total of 5 crimping dies in the kit, allowing you to crimp a good majority of the crimps you will encounter and this was the thing that really made me wanna order this tool because I don’t want to keep 5 different crimping tools, it’s more convenient to have one of these with interchangeable heads.
Welcome to a new InTheMail, the series that will touch both your passion for electronics and your bank account at the same time. We’re gonna start with this insulation sheet, this was listed as ceramic fiber insulation blanket and it’s suppose to withstand high temperatures. Up to what temperature? I don’t know because the listing didn’t contain that information but it did say that it could be used on stoves so I would guess up to 300 degrees Celsius.
Hello everyone, welcome to a new Voltlog, this time it’s a bit different, I’m out in the nature, enjoying this beautiful day in the mountains and i want to show you something. So I’ve been hearing that there are certain areas here in Romania which may have been subjected to high levels of nuclear radiation, it might be related to the Chernobyl accident from 1986 but I’m not sure.
There are stories from people saying that they’ve encountered trees in certain areas growing strange fruits or items that you shouldn’t normally find in the nature. And I think I might have encountered such a tree, here on this trail hike.
Today we’re going to discuss methods for protecting a circuit from the environment and this applies in general to printed circuit boards but you can take these tips and tricks and use them in other applications as well.
Welcome to a new InTheMail, the series that will touch both your passion for electronics and your bank account at the same time. We’re gonna start with a set of 3 prying tools from Best which is kinda of known in the mobile phone repair business, it’s a Chinese brand that sells this kind of tools. I like these because they have a nice rubber handle which provides a good grip for when you’re trying to pry open an enclosure.
Welcome to a new voltlog, today we’re going to be doing a bit of a destructive teardown on this shower thermometer. You might remember this from 10 months ago in voltlog #172, I got it 10 months ago and ever since it’s been running in my shower and I’m interested in seeing how this looks on the inside after 10 months of usage.
After about 2-3 months of usage I’ve noticed I was getting different temperature readings for the water that I was previously considering warm enough but at that time I figured it was because of the change from summer to winter and I blamed it on the ambient temperature. However I now checked with a thermocouple and the result was pretty bad, the shower thermometer is way out.