4 ms·
It would absolutely not survive for very long like this (naked PCB on a key-chain). Mechanical damage from the actual keys on the same chain is what will kill i
by aexaey 10y ago
It would absolutely not survive for very long like this (naked PCB on a key-chain). Mechanical damage from the actual keys on the same chain is what will kill it before water, sweat, washing liquid, pocket lint or ESD do.
First things to fail will be ceramic capacitors torn/cracked and leads of SSOP-20 package bent/shorted.
That said, it is trivial to protect the board from all of above - just wrap it (except USB connector) with insulating tape or better yet, cover with silicone putty, or similar.
- jacquesm 10y agoCast in epoxy. Cheap and quite durable.
- StavrosK 10y agoDo you have any information on what you need to buy and how it works? Do you need a hot air station?
- spacecowboy_lon 10y agoI think its a combo of two compounds that harden when mixed. http://uk.rs-online.com/web/p/potting-compounds/1991402/ http://uk.rs-online.com/web/p/potting-compounds/1991402/
- jacquesm 10y agoIt's just a base + a hardener, mix and cast. Make sure you protect switches and connectors before casting. The reaction is exothermal, if you cast larger volumes you may need to cool the whole thing to avoid trouble (such as fire).
- andrewwhartion 10y agoSimilar to this -> http://makezine.com/2012/04/12/the-most-beautiful-homemade-device-ive-ever-seen/ http://makezine.com/2012/04/12/the-most-beautiful-homemade-d...