Reddit reviews MG Chemicals 832C-375ML Translucent Epoxy Encapsulating and Potting Compound, 12 oz liquid Kit
We found 2 Reddit comments about MG Chemicals 832C-375ML Translucent Epoxy Encapsulating and Potting Compound, 12 oz liquid Kit. Here are the top ones, ranked by their Reddit score.
Non-porous, water and chemical resistantExtremely impact resistant contains a form of nylonAffords high security, once cured, extremely difficult to removeNon-conductive, an electrical insulatorLow toxicity, suitable for explosion proof components (spark arresting)
I use potting epoxy.
MG Chemicals Translucent Epoxy Encapsulating and Potting Compound, 12 oz Kit https://www.amazon.com/dp/B005T8S0PA/ref=cm_sw_r_cp_apa_n1dPzbDXPFWET
You can build a small form or mold and put the electronic component in it. Pour the epoxy over it and let it cure. It'll be encapsulated in epoxy and unable to get wet. I use it on castle mamba Max pros. Have done 3 for me and one for my friend with no failures yet. Balloons and grease etc will fail over time because the water can wick down the wires inside the jacket of the wire. I spend lots of time and ruined many escs before learning about epoxy. It's way better. Potting epoxy won't shrink or expand which can break your electronics.
The other method I've not tried is conformal coating. It's a thin layer of waterproofing. It supposedly works well too but I've not tried it.
For servos or BECs I use the same epoxy but when it sets up and get thick like syrup, paint it onto the circuit board several times as it drips
For a receiver I had one fail after using potting epoxy so I use liquid electrical tape. I get it from Lowe's. Same deal paint it on let it dry. Had no failures with that.
I always confidently sink any of my trucks and they work every time. Let me know if I can help. Best of luck!
The board in your picture is typical of what is contained in the typical plug-in USB chargers. The key is the circuitry must be in a solid, well-insulated enclosure. In the case of the project you're building, keeping the power supply after the vacuum cleaner switch solves the problem of leaving it plugged in and unattended.
If you're really worried, take the guts out of a brand-name USB charger. Alternatively, you could encase the circuitry in electronic potting compound with only insulated wires coming out.