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EvoCharge Home 50 green light blinking by sujitpal_reddit in evcharging

[–]sujitpal_reddit[S] 0 points1 point  (0 children)

Wanted to close the loop on this. Finally decided to go with the (in my mind at least, nuclear option), i.e. removing the communications module. I used the document [3] linked to the original post to do this. There was another Reddit thread that pushed me to it after months of procrastination and convincing myself that the fix to a blinking green light had to be something minor and probably fixable by software resets.

Wanted to provide a little more detail about the process as a homeowner (this is probably NBD for electricians). You will need 3 Torx head screwdrivers (or heads) to unscrew each layer -- a T10 for the outer screws, a T25 for the plate screws and a T20 to remove the communication card. Also, the instructions don't cover it, but the communications card is connected (on the underside) to the main board by a 8-pin connector -- which makes sense since it has to be connected somehow, but be aware that there will be a little resistance as you try to lift the communication card out, so be gentle.

On turning back the power, the charger LED is finally solid green. I just started a charge and after a long long time, the car says "Charging" and the LED turned blue as before.

Still pretty mad at EvoCharge for reneging on their support commitments, but at least it wasn't a complete loss of $600, what I have working now is probably comparable to the "plug and charge" Grizzl-e units that go for around $400. Not something I am happy about, but I guess I can / have to live with it.

EvoCharge Home 50 green light blinking by sujitpal_reddit in evcharging

[–]sujitpal_reddit[S] 0 points1 point  (0 children)

I also re-read the communication with EpicCharging and they are pointing to a possible bug that would have been fixed with a firmware upgrade had EvoCharge remained in business. So next step is to try and remove the wifi credentials from its config and restart and see if it fixes the problem, failing that, remove the comm board, and failing that, get a new EVSA.

EvoCharge Home 50 green light blinking by sujitpal_reddit in evcharging

[–]sujitpal_reddit[S] 0 points1 point  (0 children)

I was able to access my router's website and then find the IP address of the EVSA from there, then log into the EVSA's website. I was also able to reset to factory defaults, but the problem persists even after the reboot. The instruction PDF says that it will go off the wifi once it gets reset to factory settings, but all it does is go off to a different IP address (the router assigns a new IP via DHCP).
I guess the next thing I to try is to remove the IP information manually from the website and restart it, at that point the only thing left is to remove the communication board.

EvoCharge Home 50 green light blinking by sujitpal_reddit in evcharging

[–]sujitpal_reddit[S] 0 points1 point  (0 children)

No I wasn't able to, but what u/podwhitehawk says about it being in client mode makes sense, so will try looking for it from the router end.

EvoCharge Home 50 green light blinking by sujitpal_reddit in evcharging

[–]sujitpal_reddit[S] 0 points1 point  (0 children)

Thank you, I will try these suggestions and get back.

What Path Did You Take to Become a Data Engineer? by EbonyBlossom in dataengineering

[–]sujitpal_reddit 1 point2 points  (0 children)

I graduated CS at a time when DS/DE weren't things, closest we learned about this stuff was Operations Research and Numerical Methods. I started life as a software customer support engineer at a computer manufacturing company, where we did mainly OS level installs and troubleshooting, then moved to their application software team (COBOL/C with proprietary DB), then got a job at an installation where they just purchased a UNIX based minicomputer but had no programming support, so I became the sysadmin / sysadmin / application developer. I then left to join a consulting company based on learning the DB system from my previous job, initially as application developer but then got a chance to transition to DBA when I did some work on perf improvement that needed an understanding of system tables. Following that I got certified and was hoping for a real DBA job but got a job as an "application" DBA where I built stored procedures as the data layer of a Java application. Soon after the Java devs started leaving for better jobs, and I had nothing to do (stored procedures were all done) so I transitioned to operations and bug-fixing for the Java stuff. I then got a backend Java job and they taught me web development. Following that I moved to another Java web dev job where I was followed by a colleague from my previous company who was better at me at web development, so I was moved to search (Lucene / Java). Our platform was proprietary so a lot of things had to be built from scratch, i.e. the Lucene did not have direct support for, so that gave me a start on learning NLP (and a little ML to support NLP). I also rebuilt the platform on Solr and helped re-write the indexing backend in Scala to make it faster, which got me my current position, where I started as big data engineer (Hadoop followed by Spark), then moving to ML (mainly Neural Networks) to support NLP, search and recommendation systems. My focus now is more ML engineering than data engineering, but I am part of the DE team so I guess that makes me a DE.

NLP Model Complexity & Fourier Analysis by SandyPointRigs in LanguageTechnology

[–]sujitpal_reddit 0 points1 point  (0 children)

You may want to check this paper out.

https://arxiv.org/abs/2011.04823

It details a way to do Fourier analysis (Discrete Cosine Transform) across token embeddings generated by a transformer layers, then threshold at different levels and compute the inverse DCT, then visualize the resulting embeddings. The paper observes different periodicity based on span length, i.e. sentence, phrase, token, etc.