These are chat archives for esp8266/Arduino

13th
Jan 2017
Vyvojar123
@Vyvojar123
Jan 13 2017 09:22
hello, little bit offtopic: is it supported STM32F103RBT6 in Arduino IDE ? thank you
Me No Dev
@me-no-dev
Jan 13 2017 10:29
yes, but not by this project
Victor Tseng
@Palatis
Jan 13 2017 11:30
ouch I was busy for other things these few days
@porkyneal esp8266 has several different memory regions
@porkyneal .iram0.text gets loaded into instruction ram on boot, .irom0.text is shadowed by MMU and loaded on-demand
Aaron N.
@porkyneal
Jan 13 2017 11:39
OK, thanks @Palatis .
In an objDump is .text === .iram0.text and .irom0.text === .irom0.text
kuza55
@kuza55
Jan 13 2017 19:10
I'm not sure if this is a good place to ask, but do you guys think it would be possible to run a wifi udp server on some batteries? I want to build a network controlled IR transmitter and I don't really want to deal with a power cord
Victor Tseng
@Palatis
Jan 13 2017 19:11
wifi eats LOTS of power
depends on how long you want it to last and how big the battery is...
kuza55
@kuza55
Jan 13 2017 19:14
ah, bummer; is bluetooth low energy much better for this sort of thing? I was thinking 2x AA or something like that, but I guess I can power it if it's going to be suck battery
Victor Tseng
@Palatis
Jan 13 2017 19:14
well the 8266 draws around 80~100mA on 3.0~3.3v
kuza55
@kuza55
Jan 13 2017 19:15
I was sort of hoping there was a "wake on wifi" type thing that existed
Victor Tseng
@Palatis
Jan 13 2017 19:15
so its ~250mW ~ 300mW
udp... basically you loose whatever transmitted during the sleeping period
kuza55
@kuza55
Jan 13 2017 19:18
I was hoping to make use of this DTIM thing: http://jeelabs.org/book/1526f/
not super clear since wikipedia says it's for multicast/broadcast but I want it for unicast
0.86 mA at DTIM 3 seems a whole lot better than the 80-100 for standard operation: http://www.esp8266.com/wiki/doku.php?id=esp8266_power_usage
Victor Tseng
@Palatis
Jan 13 2017 19:24
yeah and your packet is delayed for 300ms
kuza55
@kuza55
Jan 13 2017 19:24
that seems pretty reasonable
kuza55
@kuza55
Jan 13 2017 19:30
DTIM 1 is also not significantly more power; I could switch from DTIM 3 to DTIM 1 when I wanted it to be more responsive