4 ms·
As a former embedded systems engineer, my door bell is two long bits of wire, a bell, a push button and two C cells. My light switches are similarly complicate
by sdcfgy 1mo ago
As a former embedded systems engineer, my door bell is two long bits of wire, a bell, a push button and two C cells.
My light switches are similarly complicated.
- SwtCyber 1mo agoTwo wires and two C cells? Careful, someone is going to put a subscription layer in front of that
- bigiain 1mo ago"Only works with Juicero brand C cells."
- dreamcompiler 1mo agoI can squeeze off-brand C cells by hand.
- opan 1mo agoIs it still easy to get C cells? I probably would've used an 18650 or some AAs.
- simonjgreen 1mo agoCurrent delivery and longevity still put C and D cells over AAs, that’s the main reason they are/were common in doorbells. And while 18650s would be equivalent to a C, they would require a charger most people don’t own already, as well as the usual liion safety issues. I’ve heard horrors of folks putting 18650s in to nimh chargers with sprung terminals :/ As for availability, they are certainly very obtainable where I am in UK. Shops and Amazon etc have them.
- sdcfgy 1mo agoNo issues here in UK. 18650s have high self-discharge rate so are useless for standby applications. AA's are, well, AA's. So you'd have to replace them more often. Not what you want to happen with a door bell.
- dreamcompiler 1mo agoI use adapters for AA cells. It's just a plastic tube the size of a C cell that you snap an AA into. I have to replace them more often but I use rechargeable AA cells so waste is not an issue.
- anal_reactor 1mo agoNah, for light switches I'm all-in Philips Hue because it's both pretty and convenient. Plus LEDs synchronized with that via House Assistant.
- reaperducer 1mo agoAs a former embedded systems engineer, my door bell is two long bits of wire, a bell, a push button and two C cells. I know a guy who lives is a 1700's-era house. His is a bell, a pulley, and a string.
- donandon 1mo agoWhich part of that system is connected to wifi? I guess kinetic energy from the bell can be enough to send a zibee message
- abc123abc123 1mo agoNonsense, complete over engineering. I have a door, and people knock on it.
- shakna 1mo agoI have an overengineered wifi doorbell, and I've yet to have a delivery where it was used over knocking on wood.
- dawnerd 1mo agoSeriously. Everyone that id want to actually press the button just pounds on the door. The door to door people in particular have figured out they can’t be easily told off.
- al_borland 1mo agoI haven’t had a delivery person knock in quite a long time. Package deliveries haven’t knocked in close to 20 years. I’ve even noticed DoorDash drivers don’t even knock anymore, they awkwardly stand in front of the porch and try texting. I now open the door as they are walking up to the porch to avoid that. I don’t know if it’s a policy or some kind of shared anxiety, but I find it really weird.
- darrylb42 1mo agoI had one food delivery driver call me while standing in the middle of the street. Seemed like he was afraid to approach and knock or ring. So strange.
- raverbashing 1mo agoWow two wires? Sometimes people could make do with only one!
- deepsun 1mo agoI would want my light switches to be off when I click a special button at my bed, so when I want to bed I "turn off everything, and make sure garage is closed". Unfortunately two wires don't work there.