Search found 62 matches

by Lysenko
Tue Nov 15, 2016 1:03 pm
Forum: ESP8266 boards
Topic: random offtopic posts
Replies: 11
Views: 4392

Re: random offtopic posts

Yes of course TCP has transmission timeouts. I though it was to do with inactivity. My mistake. Yesterday was one of those days. I locked myself out due tue a keyring error later on. Anyway the problem with network code is that 1) it is tricky and often misunderstood anyway and 2) This device's net...
by Lysenko
Tue Nov 15, 2016 12:06 pm
Forum: ESP8266 boards
Topic: random offtopic posts
Replies: 11
Views: 4392

Re: Downloading 1GB of data with MicroPython ESP8266 port

This particular electronics engineer is accustomed to designing radio links where unreliability has to be accounted for. After a lengthy and frustrating experience with MQTT I concluded that writing robust network code is a quite separate specialist skill which, alas, I don't possess. I was mostly ...
by Lysenko
Mon Nov 14, 2016 4:40 pm
Forum: ESP8266 boards
Topic: random offtopic posts
Replies: 11
Views: 4392

random offtopic posts

SMBus is more about not paying royalties and maybe cranking up the speed a little. As is TWSI and PMBus. Once you've checked the voltage and frequency and (unlikely) 10-bit addressing they're all the same. Very few devices use the error checking facilities. SMBus is slower or equal to I2C, it doesn...
by Lysenko
Mon Nov 14, 2016 4:37 pm
Forum: ESP8266 boards
Topic: random offtopic posts
Replies: 11
Views: 4392

Re: Downloading 1GB of data with MicroPython ESP8266 port

jms wrote:Hate to spoil things but TCP itself has no timeout unless you enable keepalives.
Yes it does. There would be no way to orchestrate packet re-transmission otherwise.

http://www.pcvr.nl/tcpip/tcp_time.htm
by Lysenko
Mon Nov 14, 2016 1:05 pm
Forum: ESP8266 boards
Topic: random offtopic posts
Replies: 11
Views: 4392

Re: Downloading 1GB of data with MicroPython ESP8266 port

There's a difference between packet loss (acceptable for those of use that used and still use thick and thin Ethernet) as well as Wi-Fi for its own reasons and software that keels over for no reason anybody really understands. I accept packet loss and even link failure but not unexplained software ...
by Lysenko
Mon Nov 14, 2016 12:03 pm
Forum: Other Boards
Topic: PyCom choose GPL3
Replies: 35
Views: 14427

Re: PyCom choose GPL3

I suggest presenting a reasoned case on PyCom's forum. Perhaps you've already done so - I've rather lost interest in PyCom so haven't looked. As I said, I'm not a PyCom customer so it would be a bit disingenuous to try to discuss this with them. My interest is confined to mainstream MP. Besides, I ...
by Lysenko
Mon Nov 14, 2016 11:48 am
Forum: ESP8266 boards
Topic: random offtopic posts
Replies: 11
Views: 4392

Re: Downloading 1GB of data with MicroPython ESP8266 port

It's a very very sad state of affairs indeed when a device capable of transferring the odd gigabyte without keeling over is considered in anyway satisfactory. No wonder the banks are in the state they are. That's a common reaction from electronic engineers (in my experience) and explains both why I...
by Lysenko
Sun Nov 13, 2016 9:59 pm
Forum: ESP8266 boards
Topic: The state of the community
Replies: 11
Views: 4263

Re: The state of the community

[*] Any other ways to gauge the size of our small group?[/list] Github watches (492) and forks (871)? The latter may be largely dead, but the former is mail bombing people several times a day and they're not switching it off. Well, that's for the whole MicroPython repository, though, not just the e...
by Lysenko
Sun Nov 13, 2016 8:03 pm
Forum: ESP8266 boards
Topic: The state of the community
Replies: 11
Views: 4263

Re: The state of the community

deshipu wrote: [*] Any other ways to gauge the size of our small group?[/list]
Github watches (492) and forks (871)? The latter may be largely dead, but the former is mail bombing people several times a day and they're not switching it off.
by Lysenko
Sun Nov 13, 2016 6:56 pm
Forum: ESP8266 boards
Topic: Module for Ultrasonic sensor (HC-SR04)
Replies: 37
Views: 20168

Re: Module for Ultrasonic sensor (HC-SR04)

Hi! I'm very interested in the potential of using inexpensive acoustic sensors for tide and wave measurements. Thanks for posting your work in progress. Are there any updates on your results and advice? I had more success with these: http://www.sharpsma.com/webfm_send/1489 ... in high humidity envi...