Re: Code Bounty
- Posted by katsmeow Feb 05, 2023
- 931 views
Kat has been vague about the actual requirements, but why wouldn't a $10 ESP32 board do the same thing? Lots of I/O, wifi and bluetooth. Just set it up within range of your router, and connect to it with a PC, tablet, or cell phone. Reading and writing the ports is much simpler than doing the same with a Pi. Many more ports, and no need to learn Linux.
Because i know nothing about ESP32 (learning curve), and i do not want it wireless. I turned off wifi in my dsl router, and Centurytel kept turning it back on. A neighbor with a computer store in town managed to hack in and Centurytel complained to me about his porn download in violation of DMCA. I shut it off again, removed the wifi antennas, set firewall check boxes, and changed the password again. At the time, winXP would not reconnect thru wifi, and i have no reason to think win7 is any different.
Eu doesn't need to know how to access physical ports that way. You can set the ESP to talk any internet protocol that you want.
Compared to Kat's C64 - this probably has more processing power and certainly more I/O capability.
One project at work 40 years ago involved connecting 140 8-bit IO lines to the C64, and programming involved timestamping the incoming data, and implementing a moving window thru time so old data fell off after a programmable time interval. The Modicon i was monitoring was so far above my pay grade, i had the company pull those lines out which they wanted analysed.
Why risk plugging motors and such into a $1,000 pc, which is no longer designed or suited to the task, when it's easy and safer to isolate it with something that costs $10 to replace?
The absolute simplest path is a smart PIO chip plugged into the desktop pc in any way possible that OE can understand, preferably non-galvanic connections. The Pi and ethernet satisfies that, runs OE, and offers at least 2GB of storage. Downside is it runs nix, so if it breaks, i am SOL.
BTW: Kat, the term you are searching for is SCADA. https://en.wikipedia.org/wiki/SCADA (A.K.A. "expensive")
Thanks Irv. I had not thought that 1 or 2 Raspi and a handfull of Atmels/Arduinos around each one would be expensive. Come to think about it, the little '44's i bought for less than a dollar each, every time i asked for help (they program in C), they got bad-mouthed so i quit using Atmel, and so did Tiggr so i deleted all the Ai code, and now it's like happening again. I mentioned something like this but no one (including the sellers) knows how to use one, and it really doesn't have the smarts/storage an OE-Pi can have so i'd need to leave a desktop machine on full time.
This is getting sooo far off topic.
Kat
