ds-2cd2032 Cameras I like.

For those who are interested, come in. When I was doing the review, there was just a few days of nasty weather, and then the cameras left for their regular place.

Wrote from Ali, from a store that sells tactical small things. They offered to test the new items, I would prefer a tent, but they gave tactical key rings. Where there was a nose, now there are two key rings.
Reminiscent of the skull of a bull or a bison. Size: 10 (between the horns)x7x2 cm. Lot #2.
It would be nice to bend the clip: If, at the sight of these Chinese trinkets, you have a smile, then I also wrote a review for a reason.
I don’t pull on a sacred minister, my stomach is small:
Tactical Cross Model God Save TC4 Kind of like a knife of last resort, stab the attacker in the thigh. metal composition on X-MET 5100 X-ray fluorescent metal chemical analyzer: Enjoy the shopping! The product was provided for writing a review by the store. Price US $16.50 Brand: MING YU Held with a sheath-skull with an interference fit, it just won’t pop out.
We even made a special plastic blister for it. Two lots of selected game

Hello everyone! As they say, it’s time to take stock. Here is such a piece of https://jiji.co.tz/pet-services/boerboel crap: Blister here too: Maximum width 1.5 cm. The plate on the chain is placed on the top of the cross to stop:
Cutting something with such a knife is a utopia, only stabbing. Polished, but shells and micropores in abundance.
Two unnamed cardboard boxes 13×10 cm. Review published in accordance with clause 18 of the Rules Ox: If you are a noble sofa survivalist and your eyes light up from these lots, then I am glad that I helped you with the choice. But I think it’s nothing more than a toy. The material is a weakly magnetic metal casting. Lot #1.
Metal cross (magnetized), polished and shiny.
And here is a surprise – a micro knife.

Micro knife Skull of a bull and Tactical cross.
We grab the bull by the horns and pull it up: Dimensions: 80x45x5 mm. There will be a small review of a couple of Chinese tactical trinkets. Sharpening on both sides. Pleasant to hold: A 60 cm chain goes to the cross.
Intended use: Blade thickness 3 mm.
It turns out this grip:
The chain can be wound, so as not to dangled:
Appearance :
The mass of the cross: Let’s check the hardness of the blade: Packing:
It was sharpened quite well: Blade size 4.5 cm. Let’s continue. Why so expensive, do not ask, probably
made from the Chelyabinsk meteorite.
The peculiarity of the EDC cross is a sharp tip at the bottom. In order to give the review significance, we will conduct research. Rear clip for attaching to a belt:
Chinese knives usually have around 58 units. It is unlikely that anyone in their right mind will buy this, but you can go under the cut, you can burn. Only such a grip between the fingers is convenient:

]]> https://7avp.com/rear-view-camera-21/ Thu, 07 Jul 2022 10:34:38 +0000 https://7avp.com/?p=4420 The trapezoid is not adjustable…the idea is to change the camera angle so that the trapezoid fits. The rear view camera turned out to be of very good quality, color and IR illumination work well, although at least some light is needed. Having paid 6-10 bucks, you can take not a CMOS but a CCD camera – it sees much better in the dark. They can tear off the camera itself and break the glass in search of a TV. I want to set zero to the bumper. The site helps you find something interesting in a huge range of stores and make a good purchase. The site MYSKU.club was created for reviews of goods ordered in foreign online stores AliExpress, Amazon https://jiji.ng/olokonla/temporary-and-vacation-rentals, Ebay and others. Too noticeable. Includes 5m video cord and power cord. The picture shows a trapezoid, with zoom levels ranging from zero to three. Only registered and authorized users can leave comments. It is placed instead of a backlight. Unfortunately, no, the camera was sold half a year ago (I did a review to fill the site :), but you can believe me it was the best of its kind, and for this price. You can search for a camera for a specific car, for example There was a manual included.

Rear View Camera

]]> https://7avp.com/uni-t-ut622e-lcr-meter-overview-16/ Tue, 28 Jun 2022 09:44:08 +0000 https://7avp.com/?p=4418 Devices based on the use of Ohm’s law ratios are simpler in terms of circuit implementation and automated measurement results. Briefly about the transistor tester, many praise it and say that it makes expensive devices. Recording and statistics function < br />Manual / automatic operation So there is something to compare with. I repaired radios and rebuilt I needed to measure low capacitances, from 1pF, stability of readings, so that they would not float during the measurement and the same result would be consistently shown when re-measured. The higher the ESR, the greater the initial "voltage surge" at the moment the current is applied.
I’ll make a reservation right away, I didn’t study in a profession related to electronics, but from childhood I studied, read, learned everything myself, so I don’t have professional knowledge in this area and I apologize in advance if something is not so. The capacitance is measured by the standard method – the charge time of the capacitor with direct current is measured to a certain voltage level (in this case, up to 0.2 V) and the capacitance is calculated using the formula C \u003d t * I / U. Voltage, current and phase shift between them are measured in a selected section of the circuit. Before that, you had to shovel boards with a considerable number of capacitors, it took a long time until you get to the very one and it’s not a fact that it is the last one. The instruction for the device, purely in hard Chinese, I hardly managed to find in English, here is the link, and as I understand it, a certificate or statement of verification from Uncle Liao, a warranty card, a brochure from UNI-T and a disk. Those who purposefully take such devices, the functions of the buttons will be intuitive. This is a review of a really 4-wire bridge immitance meter from Uncle Liao. The RCL measurement accuracy is so-so, for domestic purposes it will do, this is a price for versatility. Such devices can only operate at fixed frequencies. The ESR measurement error in this case will be 0.02 ohm. Sometimes it was rational to change all the capacitors along the search path or to give up on new ones at once. When using this method, the ESR of capacitors is small
capacitance (1 … 10 microfarads) will be slightly higher than their real ESR due to the fact that in a time equal to the duration of the test pulse, the capacitor will have time to charge up to a certain voltage level, which gives an increased error in measuring ESR with a small capacitance. The search for an affordable and ideal LCR meter. Audible / visual alarm and tolerance counting function For example, a capacitor with a capacity of 1 μF when charged with a current of 30 mA in 2 μs will have time to discharge to a voltage of U = t * I / C = 60 mV. Above the input connectors is a standard warning that, before measurements, discharge the capacitor. For me, this device is a pumped version of the E7-22. The first is short DC pulses applied to the capacitor under test. An appropriate device was purchased, and it helped to find bad capacitors, but still its accuracy was approximate, there was no talk of any accurate measurements of ESR and capacitance. I have always been interested in electronics and this is my hobby. Packaging. The device arrived without special packaging, a standard package from AliExpress, a bubble wrap and a gray box with branded inscriptions from UNI-T. An ideal capacitor with zero ESR will start charging at zero voltage. Automatically detects the type of component and selects the appropriate measurement parameters It all started with the fact that I found out about the existence of devices that test capacitors without desoldering. This device is highly specialized and you may not need it at all, you can get by with a conventional transistor tester. 2.8 inch TFT LCD I still don’t understand why it is needed, who will tell you. We have in our hands the older model of this line. With DCR function (DC resistance measurement). Then I learned about ESR and that it can be used to evaluate the quality of capacitors. For all the time, devices have accumulated: ESR micro v5.0 s, MLC500, YR1035, XJW01, HB-15 tweezers, P5030, and finally this device has arrived from the review. At the same current, a 100 µF capacitor will charge up to 0.6 mV in 2 µs. Please note that measuring the capacitance of capacitors with increased ESR in this way gives a slightly underestimated value (due to the initial voltage drop mentioned above). Implementation
digital instruments for measuring the parameters of electrical circuits based on bridge methods is accompanied by a noticeable complication of their circuitry and automation of balancing processes. Who measures the current in the outlet or at least once measured the charged capacitor in the transistor tester, you better forget about this device for now. The same younger brother UT612 rides in branded packaging. Characteristics.
Inscriptions highlighted in white are switched by a short press, yellow by a long press. Let’s figure it out. This "voltage surge" is analyzed and converted into ESR. The measured values ​​are used to calculate the circuit parameters. By this time, I had already decided on the minimum requirements for the device. The second way is to measure capacitance on alternating current using a bridge https://jiji.com.et/cars/toyota-4runner circuit. Which will correspond to the measured ESR=U/I=60/30=2 ohms.

UNI-T UT622E LCR Meter Overview. The miracle did not happen.

Found out that there are several ways to measure and evaluate the quality of capacitors. This is an adequate accuracy, ESR measurement, measurement without desoldering, because. Complete set. The device itself, Kelvin probes, cable, calibration plate, mains power supply (5V, 1A, for Chinese sockets), mini USB cable, it is not clear what prevented to put type-C. It measures from 28pF, an incomprehensible Vloss indicator, it’s not really written about it and what it gives, it seems like it’s the loss tangent (tg δ), but compared with devices that show this angle, it’s not even close, it gives out some bad capacitors as good. The principle of measurement of such immittance meters is based on the analysis of the passage of a test signal (usually sinusoidal) with a given frequency through the circuit being measured, which has a complex resistance. Then it’s better, the bundle of papers is already their brand. Tolerance comparison mode Usually they have branded packaging of red-gray color, and here the savings are incomprehensible, although the device is not cheap. The principle of operation of bridge meters of immitance is based on the use of a measuring bridge, for balancing which, the device contains sets of exemplary active and reactive (capacitive) resistances. The operating frequency voltage from the internal generator is supplied to the measured object.

]]> https://7avp.com/another-implementation-of-the-eakins-microscope-12/ Fri, 17 Jun 2022 08:54:28 +0000 https://7avp.com/?p=4416 Therefore, the topic of microscopes for diagnostics and soldering has long been relevant, and if the USB “fine scope” for 10-15 USD was more or less suitable for the first one, then soldering under it was extremely unpleasant. And now the vision is not the same, and the details are painfully small.
In the last photo – the inner world of K511LA3 – could not resist – opened it. Here it is – happiness, but no – as already rightly written, a ring illuminator is far from always good, and here I am again drilling holes for the backlight lamps on a flexible base that were in the trash. However, the "pieces of iron" came, but what to do with them? Life has become more fun – there is a button – you press it, the image is displayed from the computer, you press it again – from the microscope. And so, after reading the review, I ordered the same set for myself. Not very pretty, but in general, almost perfect for my "pieces of iron" The solution is simple – I ordered an inexpensive KVM- a switch with a minimum of functions, USB. < /p> We modify a little with a file, drill holes and cut threads for fixing screws, and the microscope is ready. Personally, this is convenient for me, despite the more "cool" and less cheap ones suggested in the comments models.
(The photo is already protected from “scratches”, when trying to insert it somewhere.) At the same time, in the upper position, and, accordingly, the optimal, as it seems to me, magnification for soldering, from the object to the objective lens is 220 mm. I got it in this form I found parts https://jiji.co.tz/55-formal-shoes/formal from several MBS microscopes, but the assembly I needed was missing everywhere, and then a work colleague told me about attempts to make a drilling machine from the remains of MBS-9 … I wanted to immediately throw away the incandescent lamps and firmly insert home-made ones from 3 1-watt diodes, but the picture of the backlight with incandescent lamps seemed interesting, so for now I refrained from breaking the lamp sockets – I will make diode ones on the same base. So, the first task is solved, however, there is not enough space on the table for 2 monitors, and it is lazy to switch connectors many times, and it is not useful for their long and healthy life.

Another implementation of the Eakins microscope

I have complained more than once about my age and vision – in my youth, doing amateur radio (that was the name of the “nerd” occupation with a soldering iron and the Radio magazine in my hands), I practically didn’t use a magnifying glass, but now … Satisfaction is complete, on a 19" monitor there is an excellent picture, without any delays when moving. The microscope itself, the lens and the illuminator are considered in great detail in the review, therefore, in order not to tire the reader, I will not repeat myself. In other things, in my youth, surface mounting there was practically none, and probably the smallest thing that needed to be seen was the value of the resistor 0.125W.
In general, I persuaded him … Who cares how it ended – read on, however, the final version – in the title photo I went to the garage, found my old photographic enlarger, and realized that it was neither for me nor someone else will not come in handy – the roller drive is completely "eaten" by corrosion.

]]> https://7avp.com/electrician-beginner-s-kit-crimper-100-connectors-7/ Wed, 08 Jun 2022 08:05:01 +0000 https://7avp.com/?p=4414 Mdd2-250.
The result was not long in coming: Bv5. Sv1.25-3. — Scope of pliers: for terminals https://tonaton.co.ke/s_383-activity-trackers 0.5-6 mm2; Of course, this is not a professional instrument, but rather an amateur one. — Product material: PP alloy steel; But even if you do not have them, then the complete connectors should be enough for initial use. Sv1.25-4. But there are no problems with a knife for cutting wires, it bites the wires without problems. Rv2-6. — Plier size: 210 * 60 * 20mm / 8.27 * 2.36 * 0.79in; Of the pluses, the following can be noted: after crimping, the fixation is reliable, the contact is not lost, the connector on the wire does not hang out; The workmanship of the tool is not bad, except for the unpleasant smell. Sv2-4 Fdd2-250. Unless I would like the stripper’s knives to be sharper, since they rather not only cut the insulation, but also tear it, which is not very good. Fdd1.25-250. In any case, you can definitely train to crimp the terminals on them.
This set should be enough for the first time for a person who is starting to get acquainted with the wiring. In principle, each of the available tools copes with its functions without any problems. Rv2-4. The crimper itself initially emitted an unpleasant chemical smell (most likely from the plastic handles), but it faded over time.
The instrument is supplied in its original factory packaging, which is a blister with a retractable cardboard back wall. Will have to order one soon
But for me, the most interesting thing here was the process of crimping the connectors. Process:
So, there are sponges for crimping connectors on top. BV2. I have no complaints about the workmanship of both the crimper and the connectors. Everything is done more or less decently, there is no flash on the insulators, the metal is processed normally – there are no sharp burrs. You don’t need to buy anything right away. Summing up everything that has been written here, I want to note that I have plenty of insulated connectors of different "caliber", all of them are suitable for crimping with a monitored tool in terms of their parameters. 10.JPG” /> I saw on sale universal crimpers, with interchangeable "matrices" (sponges), which are suitable for both insulated and open terminals. Of course, if I had set a goal, the result would have been achieved, but it is unlikely that the contacts will be subjected to such breaking loads.

Electrician Beginner’s Kit: Crimper 100 Connectors

For greater clarity, here are a couple of terminals from the kit: Sv2-3. For the experiment, I used the first wire I came across and one of the 200 connectors from the package. Rv5.5-5. — Connectors included: 20 specifications (5 pcs each) Rv1-25-4. So you need to expect appropriate results from him.
On the back side of the carton, a crimper is schematically depicted with a description of its capabilities, as well as a wiring diagram. Although this set meets my needs, I can’t say that it met all the expectations placed on it. Rv2-3.
The fixation turned out to be reliable, I tried to pull the connector off the wire – it did not work. On the front side, the package looks like this: If suddenly someone does not know what it is, then a few words about the purpose of this tool: a crimper is an electrical installation tool designed to connect wires to each other https://jiji.com.gh/tv-dvd-equipment/4k-uhd or to connector contacts during electrical work without soldering. Rv1.25-6. The crimper itself (and to be more precise, its working part) looks like this (by the way, in reality it is slightly different from the picture shown on the cardboard – the knife is located not at the tip of the jaws, but closer to the handles) : Bv1.25. Mdd1.25-250. This crimper is universal, in addition to sponges for crimping connectors, it contains the following tools: the so-called "bolt cutter", a coaxial crimp, a wire knife and then a stripper for stripping. Since there are color markings on the crimper, there are no problems with the selection of the desired “seat” in the jaws. In today’s review, I want to share with you my impressions of a set consisting of a crimper and hundreds of connectors, which I purchased on eBay. Rv2-5. Rv5.5-6.
So, if you believe what is indicated on the product page, then this crimper has the following characteristics: Of the obvious disadvantages: firstly, due to the narrow "sponge" and the crimping area is narrow; secondly, this crimper cannot be used to crimp open (non-insulated) contacts. The quality of the crimp and the area are clearly visible in the photo attached above …
Dimensions are present on each terminal, applied by stamping. The corresponding sections are marked in color: red 22-18 AWG (American wire marking system in which a thicker wire corresponds to a smaller numerical value) (or 0.5-1.5 square millimeters, current up to 10A), blue 16-14 (1.5 -2.5 square millimeters, current up to 15A), yellow 12-10 (4-6 square millimeters, current up to 24A). Rv1.25-5.

]]> https://7avp.com/mini-pump-kcasa-kc-jk505-making-drainage-in-the-2/ Mon, 30 May 2022 07:15:20 +0000 https://7avp.com/?p=4412 Thus, if the voltage in the network disappears, the relay turns off and the entire system is powered by a buffer battery. Dampness, of course, did not go anywhere, mold began to actively develop. And so for the second month. The length of the tube is 4 meters and all these 4 meters up the pump pumps briskly, while the water outlet, in my opinion, is at least 2 l / min. Hence the idea to put a small water pump. There was no 12V power supply for more than 1.25A on the farm, and I didn’t want to remove the battery from the car, sorry, I didn’t have a multimeter at hand either, so I did the tests as best I could. In the name of salvation, every morning the water was pumped out by a large 380-volt drainage pump, the ritual lasted about 15 minutes with the cable and hose unwinding and rewinding. A little later, a real 2.5A power supply will be added to the box with the board, ordered on Ali from disassembly for a penny. The minimum voltage for unwinding is 3 volts, but the supply is very small, but in this way you can adjust the pressure. The pump does not draw water onto itself, that is, it must be immersed. Every spring, during the period of snow melting, we are faced with the problem of flooding the cellar in a private house. Can operate as normally open or normally https://tonaton.co.ke/c_heavy-equipments-machinery closed. The value in seconds from 1 to 999 is set on the board. After the next pumping out, I measured the speed of water inflow – about 10 liters in 10 minutes. Making drainage in the cellar.

And this is what it looked like every morning from mid-September until mid-November. The float reed switch is also good. The shoulder blades withstood a palpable compression of the fingers. Here it is: But this is completely different The description on the site is incorrect, but I read the reviews and decided to take it, https://tonaton.com/s_254-flat-irons since it fit better in terms of characteristics at the same price. Then I checked the water supply with a rise of 1.2 meters and with the same tube length of 4 meters – it turned out to be a supply of 7 liters per minute, which is also very good. And as you know, Belarusians are very fond of bulba, and it is very painful for us to watch how the harvest of hundreds of kilos of potential potato pancakes disappears. The choice was between membrane and centrifugal. The relay is decoupled from the board, so 220V consumers can also be connected, but I would not advise connecting a load of more than 1kW, although 10A is declared. So during the day the floor began to dry out (the photo shows), places of water seepage appeared, to prevent evaporation, these wet places were then covered with a film. But this year, the weather in Belarus surprised with prolonged rains – the cellar was https://jiji.ng/20-tables/modern flooded immediately after the potato harvest, and someone did not even have time to dig it out. Average electricity consumption is negligible, about 3W/hour. At the inlet of the pump, I hastily made an inlet filter from a jar of isotonic, drilling holes and wrapping it with spunbond. The bottom line is this: as soon as the water in the pit runs up to the float, the float closes and the signal goes to the board, the relay closes on the board and the pump turns on for N seconds, after which it turns off until the water closes the level sensor again. For uninterrupted operation in case of failures in the supply of 220V mains, you can additionally install a battery and supply a relay with 12V coil power. connect the battery to a normally closed contact, and the power supply to a normally open contact and power the relay. I wanted to order a small membrane for 2.5 l / min, but then I got caught on the KCASA KC-JK505 banguda. There is no dangerous voltage, performance with a margin, I think it will survive more than one flood. When disassembling the pump, I was surprised, for such a price it was made very high quality. At
Noisy when running dry, calms down with water. The disadvantage of this option is the additional consumption of the relay (0.3-1 watt). Not suitable for pumping oil out of a car. Thus, the circuit turned out to be working, the pump turns on every 10-13 minutes and runs for 90 seconds as set on the board (pit pumping time). To do this, you need to remove the retaining ring and turn the cylinder over, the magnet is not in the center there. It was decided to install a float reed switch and a time delay relay as an automatic control. I conclude that the real characteristics, adjusted for resistance, are close to those declared.
The rotor is “wet” brushless, the pump itself is submersible. There is a mode memory. P.S.2 I am waiting for an ozonizer 10gr/hour with fasttech, I will try to treat the cellar and not only from the overgrown mold. There was little sense from this procedure – in a day the water ran to the previous level, one and a half cubic meters offhand. In the summer I will think about waterproofing. The tube was only with an inner diameter of 8mm, and the pump fitting was about 10mm, I dipped it in boiling water and everything fit.

Mini pump KCASA KC-JK505. So the idea was born to make automatic drainage. The pump just hangs on the hose, I didn’t fix it in any way, I just crushed the tube with a brick, and set the pump itself horizontally 5 cm from the bottom so that the sand would not pick up. So now it looks like the old powerful workaholic-drainer can rest. If at the end of the timer, the float is still closed, then the relay turns off for a fraction of a second and turns on again, and the timer starts counting again.

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