Join devRant
Do all the things like
++ or -- rants, post your own rants, comment on others' rants and build your customized dev avatar
Sign Up
Pipeless API
From the creators of devRant, Pipeless lets you power real-time personalized recommendations and activity feeds using a simple API
Learn More
Search - "hmi"
-
I switched my job about 2 months ago. This was my first switch after college (in 7 years). I was at a senior position and was not learning anything new for few months and got really bored.
I had asked for a 100% hike in new company, they gave me over 150%. Apart from this, they offer free food and snacks (or reimburse if you order your food from outside). Unlimited leaves and work from home option. No fixed working hours (I see people working for only 5-6 hours some days). No sign of politics yet. People are very humble and help you out even on silly queries. Company is growing at a very fast pace, it was named in fastest x growing companies about a month ago in some report with growth rate of about 1000%.
I see people around me with so less experience than me but so much knowledge. Feels like I am fresher again and learning so much from them. FYI, I had worked in same field (tech) for initial 3 years of my career. Looking at seniors I am finally able to set goals.
This one time I saw CTO awake at 3 am collaborating actively in resolution of a production issue.
Having seen so much positive, I went over 100 reviews on Glassdoor to find out the only 2 negatives points ever written, one of them was slow Lift in building. The other a9 -
Our Product Manager is so amazing that,
1-> She writes FEEDBACKs in Trello
2-> BUGs in MS Excel
3-> and Upcoming FEATUREs in her DIARY
and best part is She used to work as Developer in MnC2 -
Had a task of service discovery, went through following phases:
1. UDP broadcast
2. Wait why not Bonjour?
3. JmDNS for desktop works great
4. Android NSD on Lollipop, this is easy
5. Kitkat WTF..!! Why did you put it there when it's so buggy.
6. Replaced Android NSD with JmDNS and it's great
7. Network switching on Android... done
8. Wait how are others doing it.. JmmDNS.. awesome.. fuck not working...
9. Read mDNSJava is much faster... replace JmDNS.. why haven't they uploaded parent pom on repo
10. mDNSJava freezing my Android device... revert to JmDNS
11. Let's see if it works with Wifi Direct.... Come on why aren't you working...
12. UDP broadcast it is 😢2 -
So I get to work on building a client at work for industrial automation. I am building a mini hmi to show customers how our server works. The code uses opcua. The reason I am making a client is because all the opcua hmis on the market are really expensive. There is nothing less than $600. There are hmis for free out there, but none of them say they support opcua. opcua has become a major protocol in the industrial automation industry.
It took me about 2 days to gin together a client that is pretty much abstracted and will be easy to maintain. A lot of that was just learning the opcua library client code.
Now I want to create servers and clients geared toward home automation for fun and profit. I want to take sensor data from arduinos using a simple serial protocol like modbus or other protocols that are supported. Then have an opcua server that collects this data. Then finally have an opcua hmi that I develop talk to these servers. The security model is much better and would be compatible with other vendors clients/servers. I already have a game engine I want to use for the hmi portion. It has tons of widgets for displaying data, graphs, lists, text, etc. It does both 2d and 3d.
This sounds like a project that could really fun, meshes with my work learning, and provides value to people that want to automate their lives.
The other side effect is that the next time I go looking for a simple and cheap hmi that supports opcua, there will be one. -
#OAuth logic: Lets make OAuth1.0 simpler for clients.. TADA.. OAuth2.0.. OAuth1.0 looks simpler now??!!
-
This is true I swear... I once worked on part of a project "optimization" that required, running a job on sidekiq in the background that spawns multiple threaded RPC calls on RabbitMQ (and be I/O blocking) till the jobs are done (or failed) so that it updates the status of the master object (that has the associated objects processed) and sends an email to the ops manager (just a summary email)... instead of using database locks... or dropping the email requirement...
I did it without arguing because I've already quit the job a while ago... -
MQTT - all I used to know about this is its name, untill few months back a client sent us some requirements which included MQTT. I opened its specification and I was fucking shocked! I am implementing almost similar protocol in most of my applications (which needs subscription based service) for last 3 years. I have developed IoT apps, remote monitoring systems, HMI systems using the same fucking protocol! Even I had implemented the same thing on HTTP using long polling a few years back!!
Now I feel like open sourcing my protocol. But I don't know where to start. Any help please?1 -
I was wondering if anyone is familiar with SCADA or HMI systems. I'm about to make a darn big change in my life...2
-
My colleague once wrote 160 lines of ruby code that violated rubocop in 102 lines (and he thinks he is a "clever" senior)2
-
Today I've been summoned to work for the first time in weeks to help with the startup of a machine, and testing the HMI software that goes with it.
Me and a junior colleague go to the machine. We try to get everything ready for testing. Machine was left stuck in some intermediate state by someone else. I have no idea on how to control the machine's individual components. My colleague received a crash course a while ago, but was unable to reinitialize the damn thing, and the senior machine builder was too busy on another project.
In other words, me coming over had no purpose at all, and we accomplished nothing.
I really don't understand companies. On one end there's an endless bitching about how everything is too expensive, and on the flip-side you see 'em toss buckets of money through the window.
Oh well, as long as it goes from the window to my bank account, there's no problem for me I guess.2