Questions tagged [waterproof]

For questions about design and methods to protect electrical and electronic systems from water damage.

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Make a cable go into a water container without any leaks

This might not be the best place to post this, so if I'm in the wrong, please let me know. I have a water container that I want to put a temperature probe into, but I can't drill a hole from the top ...
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1 answer
100 views

What is this cylindrical 4-pin connector called?

What is the connector — specifically the one on the left — called? UPDATE: Several folks below mentioned it might be a M16 4-Pin IP68 connector. There is a difference though between the shape of the ...
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Underwater distance measurement

I am working on a University project on ROV that needs an underwater distance measurement of about 50 cm min and 2 m max. I tried looking for sensors and came across jsn-sr04t but that doesn't seem to ...
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2 votes
3 answers
103 views

Waterproof charging of LiPo

I found this thread: Wireless charging Lipo batteries My problem is slightly different. I have 2s Lipo that I need to charge (way less than 1c, overnight is fine.) The problem is that the casing needs ...
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1 answer
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is a water inlet valve water resistive by design? [closed]

I cleaned a leaky washing machine water inlet valve with wd-40, pressurized water, pressrized air, drain opener(caustic soda+ sodium chloride), vinegar and alcohol and gave it a massage gun session ...
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1 answer
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IP6X sealing of PCB push buttons

I am currently designing a product that needs to be waterproof (IP67.) The product also requires some user interaction - basically at least one push-button and one LED. For the LED I am using these ...
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6 votes
4 answers
2k views

Is it possible for snow covering a car battery to drain the battery? [closed]

We had a snow/ice storm last night, and somehow the snow got into the engine area. Is it possible that the snow covering the battery was the case of draining the battery?
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1 vote
1 answer
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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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1 vote
2 answers
85 views

Conformal coating health concerns

For my project i would like to waterproof (or at least moistureproof) a PCB. The PCB is to be used without housing and during operation/handling there will be some skin contact (mainly hands). Now i ...
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0 answers
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Running cables through drainage, what is the best cable to use?

I have a project where we have been provided with cable routing through the water drainage and will therefore need to be suitably protected from being submerged in water fairly frequently. What are ...
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0 votes
1 answer
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Will a string of 5W globe bulbs in patio survive the rain? [closed]

I have a string of 5W globe bulbs (G12) in patio. The bulbs are facing upwards. A few questions What will happen if: If I turn them on after it has rained and things are wet I turn them on during ...
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7 votes
2 answers
284 views

Why does my Vbe multiplier voltage oscillate when wet?

I've built a few Vbe multipliers as cheap temp sensors. I know there are better ways to sense temperature but I am not interested in accurate measurements, and my question is exclusively about a ...
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1 vote
0 answers
92 views

Reverse current protection

I design a wearable, battery-powered device with a watertight enclosure. It will have a waterproof USB connector for battery charging. Here is a schematic. J2 is the USB connector, MCP73831 is the ...
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1 vote
0 answers
107 views

Waterproof capacitive touch-sensor issue

my goal is to develop a waterproof capacitive touch-sensor. In many sources on the internet, it is said that a mutual-capacitance sensor can achieve this. For example, in the TI Designs: TIDM-1021 ...
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1 answer
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Waterproofing a cat5e/6 repair

I have a 1200 foot long outdoor direct burial network cable running through an outdoor environment that ranges from dry to 6+ ft underwater depending on the year and season. (Currently it is a foot or ...
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1 answer
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What can I waterproof a car remote central locking fob circuit board with?

Apologies if this isn't on topic; let me know and I'll remove it. Having keyless fobs is quite wonderful, but it does seem easier to accidentally put the key through the laundry cycle because it ...
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-1 votes
1 answer
41 views

Would submerging a 100% waterproof hotspot device increase network connectivity?

I have this portable hotspot device (9cm*6cm*1cm*) in which I insert a simcard and keep it within 10m when I am using it. Let us consider that it is water cannot damage it even if I submerge it. Would ...
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0 votes
2 answers
403 views

How to waterproof electronics for an underwater project?

I am building a project that has to do with underwater and I am having trouble waterproofing the electronic and the depth is about 15-20 feet. How will I assure that the electronic will be waterproof ...
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0 answers
70 views

Making waterproof LED circuit

If I am trying to make an led necklace with a few LEDs connected in parallel(each one separated by a little bit of wire) that connects back to a battery pack with 3 AAs, how can I make the necklace ...
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0 votes
1 answer
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What is this marine type water proof connector?

Does anyone know what this connector is by any chance?
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2 answers
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Wristband charging technique [closed]

I was wondering how waterproof wristbands are charging. I suppose is a common technique that all vendors are using. For example my wristband has two exposed leads as it seems below. The charger has ...
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0 votes
2 answers
164 views

Submersible electronics

I'm currently working on a hobby project that uses a MS5540C. It will basically measure the water depth and temperature. My general thinking was to encapsulate the whole thing (except the sensor) in ...
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1 vote
1 answer
130 views

Create circuit for 12v auto washer pump to 230v mains with push button for art installation

I am creating an interactive art installation in a gallery context using a 12 volts car headlight/windshield washer pump. It basically is a fluid washer pump taken outside of a car into a gallery, ...
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0 votes
1 answer
102 views

Are there round header pins?

I am attempting to get two probes through a sealed case to detect the pH of a fluid like water. My thought was to get two header pins and seal them with a custom 2mm diameter seal. However it looks ...
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0 votes
1 answer
98 views

Ultrasonic module Water proof vs non-water proof types

Ranging SR04 Ultrasonic modules are available as water proof and non-water types. In the water proof types SR04 modules there is only 1 sensor while in the non-water proof types SR04 there are 2 ...
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0 votes
1 answer
86 views

Ingress protection(IP Code) at connectors

What does the IP code exactly describe when applied at bulkhead receptacles? The ability to seal the conductors inside of the connector from the environment or the ability to seal the enclosure from ...
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0 votes
2 answers
151 views

Waterproofing products

does anyone know of a product that can be used for waterproofing electronics and exposed wireing that is suitable for submersion for potentially long periods? More specifically I am looking for a way ...
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2 votes
1 answer
87 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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1 answer
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Water sensing circuit?

I was learning about GFCI and wanted to know if there was any easy way to create a simple circuit to detect when there is water. What I would like to do is make a LED turn on if a component (whether ...
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0 votes
3 answers
137 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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1 vote
2 answers
419 views

Which components for flat waterproof buttons controller

I'm trying to build a waterproof controller to mount on a motorcycle, to interact with a Raspberry PI Zero. I'm looking for the best way to build something flat (it has to be mounted on the handlebar),...
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0 votes
1 answer
529 views

Waterproofing MLX90640 far infrared thermal sensor

I would like to use the MLX90640 far infrared thermal sensor array on a car as a "night vision" camera. Since glass blocks thermal radiation I have to install it outside the cabin. Is it possible to ...
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3 votes
1 answer
262 views

Watertight enclosures - what production steps are required to ensure no condensation on the insides?

Background We want to waterproof an electronic device and the specifications call for IP-65 protection. To this end, we have selected a sealed polycarbonate box to put the electronics in. The ...
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2 votes
1 answer
551 views

Potting microSD card inserted in slot with epoxy resin

I would like to know whether it is possible to completely cover/pot a microSD card inserted in a slot (which is soldered on a pcb) with an epoxy resin. Will the sd card continue working properly? Will ...
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0 votes
0 answers
75 views

Waterproof PCB pump driving stage

We are having issues with a small 12V DC pump which is used in a number of test systems in the field. The pump is powered by a standard DC power supply and integrates a small PCB driving stage, with ...
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2 votes
3 answers
260 views

How can electronic devices remain waterproof (no short circuits) while they have exposed charging connectors

I am a happy owner of a Garmin Fenix3 fitness watch and a developer for watch faces as well. I noticed my watch charges and communicates data through 4 pins (probably for the USB layout 0,VCC, Data+, ...
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3 votes
4 answers
750 views

Waterproofing a temperature sensor

I'm working with an LMT85 temperature sensor. I want it to be waterproof, since it will be working submerged in water. I'm thinking of using hot glue on the connections and then using a heat shrink ...
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0 votes
1 answer
2k views

Conformal Coating PC Parts?

I couldn't find any topics relating specifically to this sort of thing, and even tried asking folks over on Reddit at /r/buildapc, but I didn't get many responses or many people know if it would be ...
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0 votes
1 answer
77 views

Protecting handmade electronics from accidental water spillings [closed]

Keep in mind that I dont know the least about electronics. I have soldered and used some arduinos before, but that is it. I am preparing to make a mechanical keyboard (or handwire like they say on /r/...
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1 vote
1 answer
235 views

lithium coin cells, safe to completely cover? lightweight method to protect from the environment

I am trying to make equipment to measure temperature in small mammals, probably attached to a neck collar. The collar needs to be very lightweight (e.g. <3g total) so I am planning to use a ...
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0 votes
1 answer
279 views

PCB material that does not swell from water absorption?

We designed a microchip to sense high pressures under water. The chip senses pressure through a thin diaphragm that deflects and a corresponding piezoresistor circuit that measures the deflection. For ...
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3 votes
6 answers
1k views

Waterproof and pressure sensor

I'm designing an equipment that will be in a rural area exposed to heavy rains. I already got an IP67 rated enclosure with IP67 connectors and it's working as expected. I need to measure the ambient ...
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0 votes
1 answer
192 views

Will reed switches break in various weather conditions

I will be using an OKI ORD-9216 14mm reed switch in my mailbox, which is outside of my house. Below is a picture of a reed switch. I am worried to whether the reed switch's glass will crack due to ...
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0 votes
0 answers
2k views

Water Temperature Sensing with DHT22

This question may also be asked in physics stackexchange, but I'll try my luck first here. I want to set up a water temperature sensor system. My temperature sensor will most probably be DHT22 due to ...
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0 votes
2 answers
2k views

Preventing Water Ingress Through Cable Conductors

Suppose a 4-conductor cable is connected to a printed circuit board mounted inside of a waterproof enclosure. The cable may become damaged (the insulation may be breached) allowing water to seep into ...
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0 votes
2 answers
379 views

Do DC Power Jacks need waterproofing?

I plan to use a pair 5.5x2.1mm DC Power Jack as shown below to connect a battery pack to a DC motor that will drive an electric tricycle. Occasionally it may rain while the tricycle may be in use and ...
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1 vote
1 answer
3k views

Will Solar Cells charge under a clear plastic sheet?

I am planning to make a Solar Powered Battery Power Bank. I made one on a small scale and will scale it up. Anyway, there is a risk of rain short circuiting my DIY power bank. I thought of sealing my ...
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1 vote
0 answers
672 views

ESP + Lithium Battery Potting

I'm designing a monitoring system for plants based on a lithium-ion battery and an ESP8266 (Adafruit Huzzah board). Due to the application, water may come in contact with the battery and/or ...
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0 votes
1 answer
5k views

HC-SR04 ultrasonic sensor water proofing

I am using the above said HC-SR04 ultrasonic sensor with Arduino pro mini. Till now, able to get the range working properly. My plan is to use this in the overhead tank to measure the quantity of the ...
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0 votes
1 answer
230 views

Can Printed Circuit Boards or other electronic devices (Integrated Circuits, transistors) be damaged by water if the electricity is turned off? [duplicate]

Is it possible that electric or electronic devices be damaged by exposure to water if the current is turned off during their exposure to water and the electricity is switched back on only after the ...
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