Questions tagged [enclosure]

An enclosure is a box to hold your electronic device.

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1answer
54 views

Small enclosure. Waterproof cable entry

Have a 5mm diameter cable entering a small enclosure. What's the best way to seal it? I was thinking neutral cure silicone. Are there better solutions? I know cable glands are a popular way of ...
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1answer
29 views

Finding the exterior dimensions of a USB type-c receptacle

I'm going to be using this USB type-c receptacle for my project. For this project, I need to make a cutout in my enclosure to make this receptacle fit. I consulted the data sheet and found technical ...
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31 views

How do I properly ground DC and AC in the same enclosure (DIN rail)?

I am building an electrical panel with AC and DC supplied power. My AC ground wires connect to a green DIN rail connector which has metal on the bottom of this terminal and connects to the DIN rail ...
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34 views

How do I properly ground AC terminal blocks on a DIN rail and respective back plane?

I am building an electrical panel with AC and DC supplied power. My AC ground wires connect to a green DIN rail connector which has metal on the bottom of this terminal and connects to the DIN rail ...
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2answers
62 views

Can metal electrical panels have a non-rectangular or squared shape?

Standard metal electrical distribution panels are rectangular or square shaped boxes. Is there any standard - IEC, NEC, etc.- contraindicating the manufacturing of a custom shaped box for an ...
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16 views

GPIO hub suggsetions?

I have pieced together a bunch of cheap hardware to control my pool. That said, I'm at the point where I need to share a few GPIOs with external devices. Notably, I need VCC/GND to be split numerous ...
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2answers
58 views

Tweeter speaker enclosure size and material

I try to make a system that generates high frequency tones ( 12-17kHz ) only. Use some cheap tweeters like : https://www.banggood.com/100W-Piezo-Horn-Speaker-Tweeter-30KHZ-Piezoelectric-Head-Driver-...
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0answers
127 views

Why do some PCBs have exposed copper along the edge even when mounted in plastic enclosure? [closed]

I've already read about reasons for exposing copper at the perimeter of a PCB (i.e. Why do some PCBs have exposed plated perimeters?). It seems that the main reason to completely expose the copper ...
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1answer
51 views

How are components typically connected to a PCB when they are mounted in an enclosure?

Many small speakers are designed with screw holes to mount them in enclosures. They also have connectors to solder wires so they can be electrically connected to a PCB. How do I do something similar ...
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2answers
74 views

going from 2AWG wires down to 14AWG

So I basically have a 2 AWG power wire, but I want to end up with about 5 or 6 14AWG wires so I can put the power through a connector. Does anyone have methods of going from a 2AWG to multiple 14 AWG ...
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56 views

Safety when creating electronics enclosure

I'm designing an electronics enclosure to be placed in series with the power cord for a device for control purposes and would like to know safest methods to do power breakouts within the plastic box. ...
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66 views

Do I glue the screw when mounting the PCB to enclosure or not?

Well, this is a handheld device we are developing at our firm. We bought the enclosure from a chinese man. in AliExpress. It's made out of ABS. The device is going to be used in an industrial site. ...
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1answer
92 views

PCB Mounting solutions in outdoor enclosure?

I've completed the design for my pool timer and now I'm down to designing how this board will actually hold itself inside an enclosure. I already have a box that I'd like to re-use. It looks like ...
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1answer
57 views

Is it reliable to use old computer hard disk as an external hard drive to store data? [closed]

I have a hard drive which cannot boot windows but works for even at higher transfer rates also its 6 years old, I found cheap enclosure SATA to USB 3.0 enclosure that works for even 100Mbps transfer ...
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28 views

Is there any difference between grounding bus bars and bus bars in general?

My intuition says no, there is no difference, other than ground bus bars are bonded to the grounding reference. As a followup, can any busbar be used as a current-carrying conductor by using ...
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61 views

BLE Connection Issue with Metal Case

I am working on an IoT project which using BLE (Bluetooth Low Energy). The Device Case is Metal Body. In our testing we have found that without the Metal Body the Device BLE is working absolutely fine ...
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1answer
33 views

Glue connector to metal/resin case

Want to use this type of connector https://cletk.en.alibaba.com/product/60724170404-804809515/Usb_Cable_Charger_Magnetic_Dc_Power_Cable_Connectors_Power_Adapter.html?spm=a2700.icbuShop.41413.12....
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2answers
75 views

Power connector for small product

I have a small (50mm x 30 x 12) battery-powered device to which I want to add a charging connector. I've been looking at panel mounted connectors such as this https://www.mouser.co.uk/ProductDetail/...
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3answers
59 views

Air circulation and condensation in custom enclosures for outdoor project

I am designing 6 custom enclosures in mild steel to be placed outdoors for 5 months in London UK. They will be interconnected, only one will contains 4 power supplies, all with conformal coating and ...
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22 views

What are the practical tradeoffs between cable glands and sealed connectors for harsh hybrid (ground/sea) applications?

Cable glands are typically 2 thread assemblies. Normal nut and sealing O-ring mounts gland on wall of enclosure. Special nut tightens seal rubber on cable, producing IP67 or better ingress protection. ...
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1answer
49 views

Which material enclosure to avoid impeding signal of Bluetooth and wifi?

I’m making an enclosure for: https://www.digikey.in/product-detail/en/ESP32-PICO-KIT/1904-1030-ND I read that Bluetooth signal can be impeded by 37% by a plastic case. If that is so, then how does ...
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2answers
70 views

Aligning PCBA on a plastic enclosure

I am trying to align a PCBA very accurately (within +/- 0.5mm positional tolerance) on a plastic enclosure. I'm thinking about using two 2mm diameter dowel pin that is press-fitted into the plastic ...
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1answer
51 views

Packaging PCB and battery inside enclosure - foam

What's the name/type of the dense foam that's generally used in consumer electronics to stop components from vibrating around and tightly packaging everything together? In my case, this would be for ...
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1answer
40 views

Do enclosed switching power supplies follow any standard for their chassis size and mounting hole distances?

Do enclosed switching power supplies follow any standard for their chassis size and mounting holes distances? or each manufacturer has its own conventions?
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1answer
72 views

Where to measure ambient temperature limit inside of an enclosre?

In a project, we are to place several components inside of an enclosure. Some of these components are to be considered safety critical, and their specified operating conditions must not be exceeded. ...
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2answers
724 views

WiFi Module inside a metal body

I am using ESP8266 (2.4GHz wifi) in my product which has metallic enclosure on outside but only plastic on the other side. I will be placing this device outside home near gate. Will it be problematic ...
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1answer
150 views

Should I ground PCB to an aluminum enclosure when using in car?

I have been working on a bluetooth audio adapter for car, and I plan to put it in a metal enclosure when it is finished. The bluetooth adapter is very low power and I'm powering it directly from the ...
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143 views

Enclosure/boxes for high voltage PCB

It is time to choose the proper enclosure for a high voltage PCB. We will need to do holes for LV external connectors and external connectors for high voltage wires. I was looking for standard boxes ...
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3answers
67 views

Electrical Standards - Earth Wire at Low Voltages?

I got a question about safety standards: I'm designing a consumer device and I'm not sure whether I need an earth wire. I have an AC-DC converter plug that outputs 5 V and up-to a maximum of 1 A ...
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2answers
206 views

How to keep users from breaking push button switches

I'm designing an enclosure for a device with a push button switch. The external button on the enclosure is physically large so I am concerned people will apply too much force and break the switch or ...
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1answer
354 views

Are these (dis)assembly screw symbols standardised?

Sometimes there are these two half-arrow symbols on PCBs and on enclosures. See the images, for examples. Those symbols are often placed near the screws, that are to be unscrewed upon disassembly. ...
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53 views

Placing piezo disk in vibration sensor

I am designing a vibration sensor in enclosure to be placed on vertical surfaces, like windows, doors, etc. My first try was with ready made sw420 module, but looks like it is to sensitive for my ...
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1answer
784 views

Grounding PCB Within Aluminum Enclosure

I have been doing some research on this question and, while I found a number of questions here asking something similar, I don't quite get the side-by-side comparison I am looking for. Therefore I ...
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30 views

Durable, UV-resistant labeling for electronics enclosure

I'm not sure if this is the right forum for this question. I'm asking here in hopes that someone has dealt with this. If this is the wrong forum, please do not vote me down. If necessary, I'll simply ...
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3answers
210 views

Heat dissipation by convection for ICs placed upside down

I'm currently designing a PCB with a couple of fast electronic elements (600MHz ARM, DDR3 ram etc.) and I'm quite puzzled which layer should those elements be placed upon. The product will be closed ...
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2answers
1k views

Does paint affect EMI ability of enclosure?

This could be a very stupid question, but when it comes to RF you never know. Does painting (non-conductive) over the top of a grounded metal enclosure affect its ability to absorb/block RF ...
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1answer
78 views

Identify this packaging

I've seen this packaging used by many companies, specifically in mobile equipment, automotive ECU's, marine, and other harsh environment applications. I doubt all these manufactures are making the ...
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0answers
34 views

Mounting Lithium Packs in Enclosures

I am planning to use a battery cell similar to the picture below in a product I'm designing. Is it ever appropriate to mount these directly on top of a PCB? (all components will be on one side of the ...
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2answers
524 views

Can water condensation appear on PCB in IP67 enclosure box?

Does IP67 box protect PCB from moisture? If not, is it OK to have an outdoor air humidity sensor soldered on PCB in IP67 housing? Also if it doesn't block moisture, is there any reason to use IP65/...
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1answer
118 views

Do metal enclosures block radiated emissions better than plastic ones?

Why are some enclosures made of metal instead of a lighter insulated material? Is there any electrical reason for that? Will such enclosure block radiated EMI in and out better than a plastic one?
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1answer
57 views

Is the meshed metal cage connected to the earth terminal in these embedded power supplies?

The SMPS below has screw terminal mains entry as line, earth and neutral: Is its meshed metal cage in general connected to the earth terminal internally? I could check it if I had one but at the ...
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0answers
104 views

PCB hanging upside down in its enclosure

Would this be a problem in a moderately high vibrations / shocks environment (passenger car interior) ? The screws are 1.8 mm thread diameter, 5 mm long, the PCB being some 90 x 60 mm with nothing ...
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3answers
1k views

PCB enclosure tolerances [closed]

I can imagine problems of PCBs not fitting into their enclosures or misaligned screw/hole pairs. Are these type of problems common, especially with the dirt cheap enclosures? I am planning to use one ...
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2answers
626 views

What is the best way to mount a LiPo battery in a project box?

If you were going to use a LiPo battery such as this one: . . . and needed to mount it safely and securely inside a project box similar to what is pictured below what best way to achieve that?
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3answers
125 views

I designed a touch PCB keypad what can I do for silking and covering

I want to design a custom keypad for my board. I put my board in a Plastic box 15cm x 19cm and the box has a simple box door. I want to put a keypad and a 2x16 character LCD in this door to control ...
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1answer
145 views

Safely housing a power supply

I'm building a 3-d printer, which will be driven by a smoothieboard. This needs a 24V power supply. I've bought the one shown below: What I don't know is how to house this safely. I think there's ...
5
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1answer
277 views

Flat Yagi antenna Enclosure

So, I was annoyed that my Yagi antenna was enclosed in a plastic-tube, which lets it roll around and fall off the table occasionally, but without its enclosure the elements hooked in anywhere. So I ...
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4answers
5k views

How to fix a PCB inside this enclosure?

This is a related question to How to fix this in an enclosure without glueing. However, for a protoboard/PCB, how could I attach it to the enclosure? The bottom of the enclosure has holes for ...
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4answers
661 views

Heat problems when using 5 buck/switching converters in a double isolated enclosure?

I want to use 5 step down converters (220 VAC -> 5V DC) inside an enclosure inside an enclosure (double isolation). The step down converters are similar to these. There will be 5 of them, where one ...
3
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1answer
245 views

Manufacturing of Translucent LED Indicating Symbols (e.g. router indicator lights) [closed]

I've been researching how manufacturers create custom LED-illuminated symbols such as those seen on the router in the image below: I haven't been able to find any information online from custom ...