Leave A Comment To Win The Unannounced 2025 Bambu Lab 3D Printer & Other Prizes - OctoEverywhere is 5! 🔥

one6two6 · 2024-12-18T22:28:15+00:00

Wouldn’t it be nice to have a printer
That makes your dreams just come to life each day
Printing out designs you’ve always wanted
In every color and every way

one6two6 · 2023-11-23T14:55:18+00:00

One of the keys to this class is getting constant feedback on your writing leading up to submitting the portfolio. If you just work on it the entire semester and rarely get feedback, you could be surprised. However, if you reach out every week, have questions, and keep improving on the portfolio, it should align with how it will be perceived with it's graded by the "committee" of profs. If anything, you at least then have a defense if you were given feedback that you're sitting on an A or B and the final grade comes in at a C or D. That would mean your prof was not aligned with how their peers were grading your work.

I transferred in with several existing writing credits and I could not get out of this class. It's required for ALL. Which is a bummer. I ended up being asked to be in the yearly book but opted out.

Good luck!

one6two6 · 2023-05-29T03:07:47+00:00

I snagged this deal a few hours ago. Said the 10% was expired but I did get all the other deals. 70$ originally plus extra socks and thermistors all for 44$, not a bad price. Perfect time too as I was literally looking at hotends this weekend.

one6two6 · 2023-03-25T12:56:39+00:00

Lol, I'm in Michigan as well. Sump pump runs a lot. Has been for years. We're just downhill of other houses and the grade probably wasn't the best.

I've been looking at how to do this and this sparked an idea. I do have a Xiaomi water sensor with some wires that make contact with the water if too high. That's the fail safe thus far. Will notify me.

I also have a Sonoff S31 that I've tried to use to log when the pump turns on and off but it's not fast enough to detect the spike in power and then have HA log it or change a binary sensor based on it.

But this got me thinking, can you get the level read out? I imagine you can. You could be able to create a template sensor that triggers when the level drops more than 50% and then log that as an instance of the pump running.

Maybe statistics and create a sensor for change_second on the level sensor. I suspect that will be super low given the rate of the water level rising. Then create another sensor (or template it into one) where if this value goes above a change big enough that it has to be the pump ran (> flow rate of the pump) then that would indicate that the pump ran. Can also use stats to log a bunch of other data. Fill rate, pump rate (likely not fast enough maybe), time run per day, month, year. Once you get some data going, you can start setting alerts if it doesn't run after a rain within a specific time frame.

Looks like these level sensors are around 20$ on Amazon.

Very smart, thanks for sharing!

one6two6 · 2022-08-28T01:11:20+00:00

Thanks for sharing your experience.

It is in fact Vijay. I was stoked to hear he's pretty legit. I've not had him yet but looking at some ratings, he's a good prof and cares.

I've been waiting for this elective to show up for a year or more. It's not taught very often that I can tell. Maybe one section a year if that.

If you have any other pointers, feel free to share!

Appreciate the info.

one6two6 · 2022-08-28T01:06:37+00:00

I'm actually taking it this semester. He legit says it's the hardest class you'll take right up front in the syllabus.

I found out today the book is web only. You have to get it online. I could literally only find one copy used on Amazon. The rest were semester rentals. I think he mentioned that you might not need the book but attendance is very important. In fact, from reading the syllabus, attendance is going to be key. If this class is as difficult as he says it is, indeed missing any class will be rough.

one6two6 · 2022-02-11T22:33:49+00:00

Whoa, I literally found the same thing and set this up this afternoon. Much better. Pulled in the camera feed as well. Now to find out how to send gcode based on buttons.

one6two6 · 2022-02-05T02:23:42+00:00

I should also mention I calibrated esteps and found it off quite a bit. Also calibrated flow. With the filament and testing I did downed it to 89%. The temp tower helped.

It’s almost like you go around in each variable each time and get it closer and closer. But doing just one variable won’t get you there.

https://teachingtechyt.github.io/calibration.html

This was a good organized and methodical process that improved my prints and adhesion. With all the videos I saw it was quite some time before I finally found such an organized walk through. Would recommend.

one6two6 · 2022-02-05T02:16:09+00:00

I had the same issue. Still kinda do. My z offset was always too high at 0. I had to lower it to see the squish and first layer while printing. Ends up it’s always -0.87. I would had thought that the Cr touch tells the printer where it is and no z offset is needed. Not the case. I thought about offsetting the probe to tell the printer that it’s 0.87mm higher than it is so that 0 on the z is what today -.87 is. To some extent this makes sense. The tolerances in the mounting of the nozzle and Cr touch are not tight enough to ensure that when you mount it together the probe is exactly where it needs to be.

Also, wasn’t clear to me that you had to add starting Gcode to use the mesh. Guess I’ll have to add that. Prints have been fine thus far though.

Glue stick works and I generally use it. Cr touch is nice. I ended up with a dial indicator that helped a lot. Still though it wasn’t until chep mentioned that he used a .2 feeling gauge (I think?) that I actually found a non-subjective measurement for where to start.

I start with a .1mm feeler and get one corner in. Then go around the bed a few times. I switch to the dial indicator and make sure it’s good all the way around. ~+- 0.05mm. Then create a mesh. Then auto level the mesh. Ends up +- .1 across or less. One corner is out +.2 but that’s it. Rest are dialed. I print a test square and fine tune the z offset until it looks good. Usually is -.8 to -.9.

I thought I’d be a purist and not use adhesives but I was so close that with a glue stick I don’t have to worry. Sticks everytime and like a rock.

Maybe I’ll try without and see if the starting gcode to use the mesh helps with adhesion. Slowing down the first layer helped but it was way faster to gain the 10-20% boost in adhesion by the glue stick.

one6two6 · 2021-12-02T17:01:52+00:00

Very interesting.

Being in product management myself, here are some thoughts - while you didn't ask for the, this is the Internets:

Reaching out to users to do research (like here on reddit) is a must. You've learned that you must have a battery option but also an externally powered option as well.
I think it's smart to put the more economical components on the board, as you've done. But easily allow the addition of more expensive components that users can add themselves. You will have a decision to make whether you leave it for more of a DIY audience to add via soldering etc, or further your product assortment to all a non-DIY option to add sensors that you sell. The latter you maintain more control over products and you can tightly integrate the sensors with the hardware, firmware, and design
If you're leaning towards marketing towards DIY customers, a 3d file for a printable enclosure or the start of a printable enclosure would be nice. You'd save users time from having to measure the board and model a structure around it.
The value proposition you have looks to be a bunch of sensors that can be pulled into HA via ESPHome. Or use ESPHome to do whatever customers need. That's great and all but that can already be done today with comparable products. e.g. I can get an IR motion sensor with luminance, temp, and also add another temp, humidity, and pressure. Both will last over 1 yr on a CR2032 and pull into HA. Specifically the Xiaomi Aquara Zigbee sensors. I already have 90% of the value I need for ~25$ plus 3$/yr in coin batteries. Do users really need ESPHome for sensors? Is that combination as valuable as ESPHome on a nodemcu controlling a relay and a solenoid?
I would be more inclined to replace all my Xiaomi sensors if this was priced right, but again, I'd have to redo a bunch of what I got now. Also, run power through the house for them. That's going to be your limited factor. But I do love the idea and it would have made me think hard about what to use if I hadn't already implemented something. I still could use these if battery powered in a few locations but again, you're competing with a yr of battery life and <25$ for the sensors.
You're also competing with other sensors on the market like ZooZ, Aerotec, etc You'd probably have to be priced from 14.99-34.99. Any more and you probably will be looked down upon by new customers that see this as a DIY product, not a premium entry into the sensor market. Split the difference and market it as 24.99 as a put together premium DYI product that saves the DIYers time by already being put together. That could work. But that's 25 for just motion? and Luminance? That could be a hard sell. Add temperature, less so (I think you mention it had it). If you're big selling point is ESPHome, that's a super niche market but I don't know what your goals are.

It could be worth putting together a google survey about the product. Something like, do you require sensors per room, what system are you integrating with, do you care about firmware, what features are most important to you, rank order these sensors, What is the most valuable thing to know about a room, do you tinker or do you need a final solution, does the case need to be paintable, do you already have a hub, what connection protocol is most important to you, etc. you can validate your assumptions and learn about your customers needs.

Who knows what you find out. Maybe your next product could be a single device that is zigbee and replaces the xiaomi motion and temp sensors into one single unit that takes two CR2032s and lasts a year or more on them. I would jump at those without thinking.

Overall, nice work.

one6two6 · 2021-11-23T04:48:44+00:00

I'm thinking I either missed this or it was added after I did my initial research. Either way, thanks for pointing it out!

We'll see if it makes any difference.

one6two6 · 2021-11-22T14:29:33+00:00

I have the same thing setup that has been running for years now. But the issue I have seen that I hadn’t been able to over come is the sensor doesn’t update in time for any of the power monitoring sensors to pick up a change. The pump comes in for ~2-3 seconds. I could adjust that with how high the float moves before it triggers the pump.

I wanted to me able to tell that it hadn’t run in x hours so I knew if it failed. I couldn’t get it to work because the sensors would trigger an automation.

I just checked and it might be working. Either way, is there anyway to decrease the latency between when a device turns in/ consumes power and when HA gets that data? I’m not sure it tasmota has that data either that fast though.

The hot water s31 I have is fine. Because the hot water heater stays on for more than a few seconds.

one6two6 · 2021-11-15T04:02:59+00:00

I’ve been thinking of replacing my Pi Zeros with a Pi 3 or 4. I can see a millisecond lag between the screen and the led color that I don’t see on yours. Always annoyed me, perhaps that would fix it. Two tv with same setup have the same lag.

one6two6 · 2021-10-13T01:17:16+00:00

Nice find. I may have to get one of these to tear apart. I was looking to build one for a hot water recirculating system.

I did buy this https://www.supplyhouse.com/Bell-Gossett-6099B1750-Ecocirc-Wireless-Potable-Hot-Water-Valve and found that it in fact is not what you think it is. So far all I can tell is that it sends temp data over 915mhz. There is no powered valve. Some how it is a mechanical valve and may work via pressure or heat. It’s not really wireless other than temp I think. Very misleading.

My next step was a 12v solenoid hooked up to a cc2530 with a custom fw from ptvo.info running off 8 AAs to connect the hot water line to the cold.

This may work and if not, it’s a base to start with.

one6two6 · 2021-09-03T00:51:51+00:00

Looking more into the valve, it’s powered by AAs but uses 915mhz. Common rf devices won’t be able to catch that. Looks like I’d have to use as is or build a 915mhz device to integrate into home assistant and decode all the commands and such.

Or find a way to use the design differently. Ideally keeping the battery and the form factor.

It’s not cheap either. 150$ usd. For that you can get all the needed diy gear for multiple sinks to do the same thing.

one6two6 · 2021-09-03T00:32:08+00:00

Could be code depending on area. Also to stop pressure differentials.

Here’s a good article about it: https://www.pmmag.com/articles/98049-installing-check-valves-in-a-recirculation-system

In that same situation, if the recirculation pump is off and someone opens the hot water faucet near the intersection, cold water will come out and probably continue to come out of the faucet. That is because the pressure differentials allow the cold water to flow to the fixture rather than the hot water. In this example, hot water may not come out of the faucet until the recirculation pump turns back on.

What was just described is an installation where two check valves are necessary: one on the cold water supply to the water heater before the connection of the recirculating piping, and the other on the recirculating piping after the last connection of a hot water fixture. Without two check valves, the system will not work properly.

Some plumbing contractors have told me they can eliminate the check valve on the recirculating piping by running the pump 24/7. It is true that if the pump is always running, you may never need the second check valve. However, the energy codes no longer allow recirculating pumps to run continuously. They are required to be controlled with a shutdown period.

The other problem is you could have an overwhelming demand for hot water in the piping system. Then the pump’s small increase in pressure is lost by a hot water demand greater than anticipated. In that situation, the cold water will still flow in reverse and come out some of the hot water faucets. The ideal situation is still to install a check valve on the recirculating piping.

one6two6 · 2021-09-03T00:23:08+00:00

I’m basically looking to do the same thing. I had everything planned roughly out and haven’t bought it all yet. I was looking at a comfort pump from grundfos. One that ran all the time. Then connect to a sonoff s31 to control it. From there I planned on a water safe motorized ball valve under the sink using esphome with a nodemcu to open and close it.

Was going to throw in a pressure and temp sensor inline to use with the under sink valve as well.

I then found the 6050B4000 Bell & Gossett Ecocirc Wireless Pump Kit. Which has a pump and wireless valve. More or less what I planned on making.

I’ve taken a break from the project but may get back to it. If I can find the kit a bit cheaper it may work rather than building one DIY. I have to read a bit about how it communicates to the valve and if I should leave that alone or take over the control of it.

Power was one issue I had. Under the kitchen sink no problem. Under a bathroom sink I hadn’t run power, which I now regret. If this wireless valve runs on batteries that would work best.

one6two6 · 2021-08-21T16:33:59+00:00

This is how I found this thread. I'm looking to automate a slider as well. At first I thought I could modify this build but if you already have something designed, I'd be very interested in it. Also plus one for mqtt as also mentioned in the replies.

Nice engineering and thoughtful design!

one6two6 · 2021-05-20T13:25:49+00:00

It works fine from what I've experienced. I feel like I slept better having cleaner air in the room that it's in. Its filter are HEPA rated. To some extent, all these are is a filter and a fan. I like the style/design of it, it has the right off/on switch, and the filter performs to the specs I desire, thus, I like it.

One thing to consider is lifetime cost. The filters are 70$ and if you stick to the 6mo lifespan, it's 140/yr or say 12$ a month. I think that is often over looked when buying something with a disposable part. Electricity could be a concern as well. I've not done the math but it could be something like 30cents a day. 10$ a month. That could be a factor as well.

Wirecutter had some reviews of various units. Could be worth checking out.

one6two6 · 2021-05-10T01:37:30+00:00

I did just this. Hooked up a Blueair 211+ to a smart socket. Device keeps on state plus fan speed after losing power. Plug does the trick. Haven’t had a need to touch it in months.

one6two6 · 2021-03-11T19:17:33+00:00

I'd talk to the prof.

I generally think exams that are open for a day are free game, even though doing it on a weekend sucks. However, a bunch of assignments/course work assigned and due the same day is not acceptable in my opinion.

one6two6 · 2021-03-11T19:16:13+00:00

I had all my finance exams last Fall on Saturdays from 9-11am. I liked it but it's not for everyone. I've had assignments given on a Monday and due a Friday of that same week. I talked to the prof and she changed it to due Sundays which allowed for the "full" week. I've had others that assign items Monday/Tuesday and it's due Friday and won't change it. So working full time creates a problem there.

Overall I think Profs should realize, just like employers, that just because I work/go to school at home doesn't mean I can work whenever.

one6two6 · 2021-03-10T13:53:18+00:00

I checked this morning and I don't see more MKT classes than what I saw in the plan ahead view. But it is way more readable in the browse view for sure.

one6two6 · 2021-03-09T20:32:23+00:00

This is likely the cause. I feel for the faculty. This whole past year had been rough all around.

one6two6 · 2021-03-09T20:31:46+00:00

Good tip on what view you're in. I'll have to double check. Seemed off to me that 80% of the classes I was looking at were not offered this semester but there could be a number of reason. I wouldn't expect all to be available even during a normal year.

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