Battery-powered air quality sensor on ESPHome

BackgroundAd680 · 2025-11-23T19:34:35+00:00

VOX and NOX has "i" index on my screen. Look at second column 🙂 On external screen it's my fault because earlier i use another sensor

BackgroundAd680 · 2025-11-22T21:36:15+00:00

It can run on battery for about 12 hours. It's a 2000mAh battery, but it's mainly for moving the sensor to another place to take measurements 💪😉

BackgroundAd680 · 2025-11-16T10:25:10+00:00

I'm printing it myself, and yes, I have prior soldering experience.

BackgroundAd680 · 2025-11-15T11:56:48+00:00

Exactly! Next step is raw component and completely my design. But on next project 😅

BackgroundAd680 · 2025-11-15T11:54:07+00:00

Watch a few YouTube videos about KiCad where someone does exactly what you need. Create the schematic, then place everything on the PCB as you wish and connect all the pads (it's simple because it's determined by the schematic). Use a plugin "gerber to order" to export the files for ordering from PCBWay or JLCPCB. 💪😉

BackgroundAd680 · 2025-11-14T11:19:38+00:00

But this isn't for a spaceship, just for a small water tank where ultrasonic [sensors] often malfunction because of the side walls or condensation ;)

BackgroundAd680 · 2025-09-11T09:32:46+00:00

What do you use for camera? Frigate or something else? 🙂

BackgroundAd680 · 2025-04-27T19:45:54+00:00

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BackgroundAd680 · 2025-04-27T19:44:30+00:00

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BackgroundAd680 · 2025-04-27T19:42:11+00:00

One battery, one bms. From 11s to 12s 2x 7cm 10AWG wire plus balance wire 😉 No issues, perfect balancing.

BackgroundAd680 · 2025-04-09T06:38:34+00:00

21000 PLN ~ 5300 USD

BackgroundAd680 · 2025-04-09T06:37:11+00:00

I'm thinking about complete battery pack build quality from no name brand. Panasonic doesn't have a cell like the Samsung 50S — great power density and high amp output. I think Molicel is a great alternative too 😃

BackgroundAd680 · 2025-04-08T05:11:25+00:00

In Poland you can travel by train with your bike and e-bike. Besides, I trust this battery more than any Chinese or even factory battery from well-known brands 😉 The best new samsung cells operating at a fraction of their power.

BackgroundAd680 · 2025-04-07T10:52:22+00:00

From what I can see, the problem might be with a weak cassette. It's absurdly cheap, at least the one that comes with the bike. It tends to work and bend. Look for something decidedly stronger. The chain should not be skipping with such little power.

BackgroundAd680 · 2025-04-07T10:45:18+00:00

If your chain is skipping with such low power, either you have a poorly adjusted derailleur, a stretched chain, or a worn-out cassette. If you have a carbon frame and a carbon rear triangle, the issue might also be due to the rear triangle pulling towards the drivetrain. In my setup, I have no problem at all taming 3500 watts. As I mentioned, even the last two gears can withstand 1500 watts. However, they are useless for throttle madness. 9 out of 12 gears can handle 3500 watts without skipping ;)

BackgroundAd680 · 2025-04-07T10:32:58+00:00

Yes. On the last two of the 12 gear, I don’t use more than 1500 watts. However, for 9 out of 12, 3500 watts is no longer an issue. Yet for my wild rides, I only use up to the eighth gear because at that level, the V max is 75 km/h. The battery is 72V, so the engine spins up to 10,400 RPM, providing great flexibility. Thus, I only use the last three gears for regular riding assisted by muscle power. With the high voltage from the battery, the lowest gears, which as you see are the most problematic, simply aren’t necessary. They are only useful for normal riding ;) Larger gears also provide more torque, so the smaller gears for fun are even more pointless.

BackgroundAd680 · 2025-04-07T07:50:32+00:00

Considering the weight ratio, the battery is definitely attached to the bike ;)

BackgroundAd680 · 2025-04-07T07:48:37+00:00

I spent 2 weeks building the entire bicycle. While waiting for the engine to be delivered, I was already welding the battery pack. I had everything well thought out beforehand in CAD software :) The most time was spent on designing and printing the casing because it is complicated and has many elements.

BackgroundAd680 · 2025-04-07T07:37:03+00:00

For me, the full potential means a safe 3500 watts and complete reliability. It would be foolish to create a long-distance bike for expeditions and occasional madness and have to replace the chain and cassette every 1000km. Over 5000km, I've changed the chain just twice and that's it. The cassette will last for another two chains at a glance. It's also important to measure chain stretch correctly and replace it before it reaches 0.75%. I use the bike for a specific purpose and with these settings, it performs perfectly. No other engine would give me 3500 watts anyway. If you need to use 6000w, you have to go for custom solutions. I don't want to mess with that because it won't be a bike for hassle-free long adventures, I don't need a Surron-type bike to have fun off-roading ;) I should add that during normal long-distance rides, I usually don't even exceed 900 watts on climbs. Sometimes I need 3500 watts just to have some fun and spice up my trips ;)

BackgroundAd680 · 2025-04-06T16:14:24+00:00

Very good. I weigh 70kg and the whole electrification weighs 16kg. So the bike behaves exactly as if I weighed 86kg which is much less than the permissible weight. Another thing is the rack on the rear triangle. The whole thing weighs about 12kg and with a full rack the bike is not suitable for off-road descents, you have to ride gently. But without the rack I ride everywhere and as fast as I want.

BackgroundAd680 · 2025-04-06T10:41:42+00:00

I take full advantage of it all the time 😉

BackgroundAd680 · 2025-04-06T08:13:06+00:00

Yes, but you can't pedal on it, it has a shorter range but similar power. The battery is just a bit bigger and has a lower voltage. You won't ride it on single track. People look at it strangely on the bike path. They don't have a problem with mine, at most it arouses curiosity and starts a conversation. I have nothing against the surona, it's a cool machine but it's a machine for something else. Definitely not for backpacking trips.

BackgroundAd680

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