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Ewald Erasmus
South Africa
เข้าร่วมเมื่อ 1 ม.ค. 2012
A mix match of engineering work, sailing and general craziness.
Victron inverters with IFTTT - How to control a IOT device based on your inverter output
Using a Victron Venus Gx to control a Sonoff Switch (or any IOT device) based on the output current being drawn. This video uses VRM, IFTTT, Gmelius, and Ewelink.
Links:
• IFTTT account
ifttt.com/
• Gmelius for Gmail Extension
chrome.google.com/webstore/detail/gmelius-for-gmail-shared/dheionainndbbpoacpnopgmnihkcmnkl/related?authuser=8
Links:
• IFTTT account
ifttt.com/
• Gmelius for Gmail Extension
chrome.google.com/webstore/detail/gmelius-for-gmail-shared/dheionainndbbpoacpnopgmnihkcmnkl/related?authuser=8
มุมมอง: 1 465
วีดีโอ
Abbreviated month in Mendeley
มุมมอง 1.2K6 ปีที่แล้ว
How to include the abbreviated month in the IEEE referencing style in Mendeley. This can be used for any referencing style that requires a month.
Adventure of a lifetime: Bushmans 2016
มุมมอง 626 ปีที่แล้ว
An old video but still a cool one! Song Credits to Coldplay: Adventure of a lifetime.
EEC 2016 Final Year Photo
มุมมอง 3017 ปีที่แล้ว
A time-lapse of the class of 2016's Final year photo.
Making a box for a Siphon Coffee Maker
มุมมอง 988 ปีที่แล้ว
A time laps of us cutting the foam for a siphon box. This is a custom box built for a Siphon Coffee maker, made from pine, and with a lid that can be slid on and off, the foam was used to store the glass components and stop them from breaking when being moved. It was a present for a close friend, unfortunately we didn't take enough pictures of the build from the start. but it was a whole lot of...
Control Systems (EBB 320): Solving for an exact point on a Root locus, by hand.
มุมมอง 29K8 ปีที่แล้ว
A short tutorial showing you how to use your Casio fx-99ES PLUS to solve for the exact point on a root locus for problem 9.22 in the Norman S. Nise Textbook. This intern lets you solve for the gain needed for the system
Hobie 16 Nationals 2015 South Africa
มุมมอง 3419 ปีที่แล้ว
Sailing offshore in Durban. Just a bit of action from my boat. Sailed with my sister for the first time, was great. This is my version of the Nationals. Watch in HD for the full experience Hobie Way Of Life
2013 Langebaan Tiger Nationals
มุมมอง 729 ปีที่แล้ว
A short look at what sailing is all about. This is the hobie way of life, African Style.
Go Karting Experiences
มุมมอง 1589 ปีที่แล้ว
Messing around at boarding school on a go kart in 2012 make sure you see the massive bail at the end
Hobie 16 Nationals 2015 RSA
มุมมอง 3.5K9 ปีที่แล้ว
A short video of the Hobie 16 Nationals that took place in Durban South Africa 2015 I would like to thank the lady who made this. I cannot take any of the credit for this video. Mine will come soon
Sensor Build
มุมมอง 3649 ปีที่แล้ว
For EMK 310 we need to build an ARV, to start with we need to detect a green line. So we have to build a sensor array.
Round The Island Race 2015 Through a Hobie Sailors Eyes
มุมมอง 6199 ปีที่แล้ว
A short clip of why we love sailing, the fun we have, and just showing the world why sailing is the best sport ever. Vaal Dam South Africa
thank you, very informative
Nice video! Came here from Brian Douglas' root locus videos. Highly appreciate this.
I dont get what he is calculating for the third angle, shouldn't its value just be 69??
Nice Effort Sir, What will be When we have a poles in our question? kindly make a video of that as well
Awesome video. Am trying to automate switching off certain appliances as they are connected to my essential load (ie my pool pump circuit) . So if grid is lost I want to read the email notification and then get ifttt to switch off pool pump and heat pump ewelink devices. Do I use the same method you are using?
Hi there, IFFT has changed their policy so now its a paid service. I would recommend using a mini and creating a scene with that. I see now I HAVE to make that video. I will try and complete it next week.
Gmelius as a free option Will this not work?
Hi Wayne, Unfortunately, it seems their free option doesnt include Rules.
Would love a video explaining in more detail. I don't understand what you mean in your description as I am not a techie! Thanks a lot.
I will see what I can put together, It has been a bit busy at the moment but will find time eventually.
Hi all, so after a week of having this work, I didn't realize that I was using a Gmelius trial version. I have managed to get it to work again but this time using a bit more of a full proof design. To summerise it, I use a programmable relay on the Victron and set the conditions to close and open accordingly. I then use a spare Sonoff mini and created a scene that when the mini turns on, it turns the others off/on. I found this to be the simplest and definitely the least time-consuming, If you want me to make a video explaining this please let me know. Regards Ewald
Ewald Erasmus hey there, I tried the dual Sonoff with a scene, but it does not work.Tried using two so off basic. Come on it is time for a new video
@@dtssengine6870 I will try and throw something together.
How do you connect the sonoff mini to the victron relay?
thank you, man . You're so great !
thank you you made my day!
This man has a moerse strong "howzit"! I can respect that.
You saved 1 question of my paper.👍👍
Man, thank you life saver
THANKS
omg i have been doing this by hand for the past 6 years. this video changed my life lol
Video starts "Howzit".. my immediate thought "this guy is from South Africa" hahaha
Thank you, nice work
can you please tell me how to get the value of sigma and omega if complex poles are also included?
wrong method why positive angle for poles? your method works for onlly those case where net angle 180(2k+1) and angle of pole on the right side of root locus is zero
Muhammad Saad Tariq you will see I explain that it should be negative. But it makes no difference because all of them are negative. You can include the signs if you want and you will get the same answer
Really helpful, Thanks man
Excelent explication! Very Thanks!
Thank you very much, you saved my life 🌺 I might get an A in control system cuz of your help
I'm really glad I could help!
Greetings from the University of Pretoria, student of Prof. I.K Craig. EBB 320 :-) Nice video by the way.
Glad the video helped.
Thank you very much for the video, it did help a lot :)
well
Perfect!
What song is this?
+JP Stardom darude - sandstorm
For the third angle (theta p3) can't you simply take 180-69=111 degrees? I think you solved it correctly but you drew the theta lying in the 69 degrees sharp angle instead of it going from zero degrees on the x-axis to 111 degrees. Thanks for the video it is quite relieving!
+Nelis Brink You definitely can, but this only works for when you have a pole at the origin. But with that said if you have 5 poles, with one being at the origin, your calculator will pull amps to solve that, so if you can simplify its life by saying one of the angles will be 111 degrees, it will speed up the computational time greatly.
Ewald Erasmus what if there is any zeros the procedure is same for that ?
Ali Omer: I can't exactly remember if it's the same but I have a feeling it is. Sorry this was fromany years ago and I can't remember it all.
Ewald Erasmus I tried this method is not correct when there is a zero in system so then how can we solve the problem as we have to find compensated zero in every problem , how we can find a point and k
pls try to do this one
Thanks for the vid :)
Howzit, I realised I made a mistake solving for the gain in the first part, I typed +15 in my calculator instead of +12 This with the fact that I made my sigma positive gave me a way off answer. The gain should have been is 248.68. Sorry for the mistake.
keep working, nice
Always great Sailing with my sister!!
Back in high school... The fun we had
Just some older sailing videos I still like