Frost-free Freezers

Frost-free freezers are now almost a defacto standard in most refrigerators used at home. Ever wondered how they work compared to the old frosted type freezers? It’s quite simple actually, all it contains is an auto timer which heats your freezer section to “melt the ice” at fixed intervals. It just replaces the defrost button in the old freezers. It does come with the advantage that you don’t need to clean the frost as in old freezers but there is no free lunch here.

Frost-free freezers are much more power-hungry than the old type of freezers because of the regular heat cycling to remove the frost. So it will add to your monthly electricity bill. The temperature inside that won’t be as cool as the older ones. So things won’t last that long if you want to keep it in there.

If you are looking for the most power-efficient freezers out there for long-term use, pick the ones which are used in shops for cooling icecreams, meat etc. The ones with the top door open type. They are built in such a way to minimize the heat loss(Top door) as cool air sinks and keeps things cooler.

Things you learn when you simply start observing things in and around your home.

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Smallest Certified Bluetooth Module(EYSHSNZWZ)

This right here is the world’s smallest certified Bluetooth module(EYSHSNZWZ) from Taiyo Yuden. With a size of 3.25mm x 8.55mm x 0.85mm, it’s really tiny. The pic below shows it next to a Basmati rice grain. Its Bluetooth 5 compatible, Nordic nRF52832(WLCSP package) chip with ARM Cortex M4F(512KB Flash/64KB RAM). Its entirely certified for FCC, Japan, China and EU usage for wireless plug-and-play. Reduces the headache of certification and antenna performance. One of the best choices out for tiny wearable modules. Scared to use this on a project. Hopefully won’t misplace this one. 😀
PS: Have also added an internet mandatory image next to a banana for scale.

Smallest Bluetooth EYSHSNZWZ
Smallest Bluetooth EYSHSNZWZ
Smallest Bluetooth EYSHSNZWZ
Banana for Scale 🙂

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