[I can't forget the one I loved the most...] Cordless soldering iron V2.0

辛昕

[I can't forget the one I loved the most...] Cordless soldering iron V2.0 [Copy link]

 

Although the last time (Cordless Soldering Iron V1.0), it was both anal and chainsaw-like, but it was still not fixed properly, but I still can't forget it~~~ Recently, I took some time out of my busy schedule, bought some materials, and made it again. This time it's simpler, and I can finish it with one picture! A brief explanation: 1. For simplicity and safety, I don't consider combining multiple batteries. 2. The 12V large-capacity battery used is just too big and too heavy. 3. Therefore, I naturally gave up the idea of combining the battery and the handle of the soldering iron. After thinking about it carefully, although the thing is a bit big and heavy, the wire is short, easy to move, and it is still very good to put it at hand, and it also solves the problem of being too heavy. 4. At present, the necessary LED indicators and switches have not been added; Conscience recommendation: 1. I searched on Taobao countless times, and I was surprised every time, such as this T12 DIY soldering iron tip, which not only directly helps you lead out the DC2.5 interface but also has a temperature control, which is great. (Unfortunately, its DC2.5 is a male connector, and my battery is also a male connector, so I have to toss it.) 2. The battery is 12.6V, and the power is a little small, but I don’t know if there is a boost circuit inside. I tested it myself and it took about 15s to melt the tin. The melting was quite thorough. Considering the winter temperature, and the analogy with the 40W internal heating yellow flower that I have been using, it feels good. OVER! This content is original by EEWORLD forum netizen Xin Xin. If you need to reprint or use it for commercial purposes, you must obtain the author’s consent and indicate the source

yang_alex

In fact, there is an advantage of a mobile soldering iron that you didn't mention, which is that you don't have to worry about the soldering iron leaking electricity and damaging the components on the board.

woody_chen

Useless

通宵敲代码

DavidZH

Looking forward to the analysis later

elvike

yang_alex posted on 2017-11-24 11:41 Actually, there is an advantage of mobile soldering iron that you didn’t mention, which is that you don’t have to worry about the soldering iron leaking electricity and damaging the components on the board.

Aren’t you afraid of static electricity?

cardin6

Let's consider a portable one. This 12V battery is not light. In fact, when you say wireless, you mean you don't need to find a power socket. Let's see if we can make a truly wireless and portable one.

cardin6

In fact, I have considered this DIY project for a long time before. If it is portable, it means that the battery life may be short because the capacity and weight are proportional. At that time, I thought whether I could use ordinary rechargeable batteries such as AA 5 and AA 7, but this battery is 1.2V. Can the boost module solve the problem of long heating time? I have not verified it myself, so I don't know whether this idea is feasible.

cardin6

According to the law of conservation of energy, the theoretical battery life can be calculated. However, I estimate that this time will not be too long. However, for welding, a touch switch can be added, which can greatly reduce power consumption. However, heating after cooling seems to require additional energy. How to make a choice...

cardin6

Then I remember the methane solution Chunyang mentioned at that time. Now I think it should be a more reliable lighter. Basically, I can use it for a month. Well... I admit that my smoke volume is a bit over the limit... If I heat an iron needle or a hollow needle, it should be completed quickly. The heat transfer efficiency should be very high and the battery life should be greatly improved.

辛昕

cardin6 posted on 2017-11-24 21:25 Then I remember the methane solution that Chunyang talked about at that time. Now I think it should be a more reliable lighter. Basically, I can use it for a month...

Yes, in fact, electric heating is not good at this time. You can consider gas heating, but, from my own point of view. This is practical enough, and I don’t want to toss too much. In fact, you can also think about it from another angle: Why has this thing never been more commercialized? Most of them can only be DIY?

cardin6

Xin Xin posted on 2017-11-26 23:03 Yes, in fact, electric heating is not a good method at this time. You can consider gas heating, but, from my own point of view. This is practical enough...

In fact, I think the reason why it has not been commercialized is very simple. Most people who have demand for it do not understand industrial design. The products made lack industrial sense and aesthetics. Therefore, they will not become "commodities" but only exist in DIY. Most people who want to design the appearance of products are not the demanders of this item. Therefore, they are completely blind and closed-door in their understanding of how to use it reasonably and conveniently. Generally speaking, to achieve commercialization and excellent performance of products, two conditions are required: ① Industrial design (aesthetics) + clear expression of demand (users) ② Cross-border - for example, both electronic engineering majors and aesthetics, such as Steve Jobs. . .

strong161

Why not use wireless heating? For example, put an induction cooker underneath.

辛昕

strong161 posted on 2017-11-27 09:10 xinxin Why not use wireless heating? For example, put an induction cooker underneath

This is ridiculous... Wireless charging

辛昕

cardin6 posted on 2017-11-27 01:13 In fact, I think the reason why it has not been commercialized is very simple. Most people who have demand for it do not understand industrial design, and the products made lack industrial sense...

I think it may be that the demand is too small... or it is not realistic. For example, the trade-off between battery life and weight and volume.

strong161

Xin Xin posted on 2017-11-27 11:19 That’s ridiculous… this wireless charging thing

I’m not talking about wireless charging, but eddy current heating. Just think of your soldering iron head as a pot! I felt that it was still possible to design it, but I didn’t expect that you all thought of using batteries… The soldering iron head is used as a pot, and the transmitting ring is used as an induction cooker. After this sketch has been improved, I think it is at least possible!

辛昕

strong161 posted on 2017-11-27 11:44 I'm not talking about wireless charging, but eddy current heating. Just treat your chrome head as a pot! I think I can still design it...

I don't quite understand, are you going to burn my workbench and board into charcoal?

strong161

Xin Xin posted on 2017-11-27 11:45 I don't quite understand, are you planning to burn my workbench and board into charcoal?

The so-called electromagnetic transmitting coil should be composed of many small coils, using the induction principle to provide short-distance high-frequency heating. Just like an induction cooker, when you take away the pot, the induction cooker is turned off. Similarly, only when the soldering iron tip is very close to the sensing coil, the corresponding coil at that location provides energy to heat the soldering iron.

cardin6

strong161 posted on 2017-11-27 09:10 xinxin Why not use wireless heating? For example, put an induction cooker underneath

The energy conversion is not high and the distance is proportional to the power. . . And how much radiation does this thing emit to humans?

cardin6

Xin Xin posted on 2017-11-27 11:20 I think it may be that the demand is too low... or it is not very realistic. For example, the trade-off between battery life and weight and volume.

If you say that it is rarely used, I don’t think so. In fact, the frequency of use of electric soldering irons is indeed the contradiction between battery life and volume. Otherwise, there would not be some gas electric soldering irons on sale. Suddenly I have an idea. , . . Is it true that no manufacturer has considered the issue of wireless soldering irons at all?