ESP8266: A $5 microcontroller with wi-fi that runs Python

Post by gh02t » Tue, Feb 23, 2016, 1:52 AM UTC

StavrosK wrote: post #41

gh02t wrote: post #39

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Just two resistors works or three if you want deep sleep. Some people recommend pulling up/down some of the other pins, but it's always worked fine for me to leave them floating. I tend to do those with solder bridges instead of wires, so it doesn't get too messy. I also usually put an LDO regulator on the power input since I have more 5V supplies on hand and I skip the smoothing cap. The output from the regulators I…

Yeah, I usually add the rest as well, for stability. I don't really use the FTDI programmer as programming it over the air is faster and more convenient.

Post by johnnycarcin » Tue, Feb 23, 2016, 2:28 AM UTC

rocketcity wrote: post #66

Now all we need is for AWS IoT to support TLS 1.1 with symmetric keys. Currently the ESP8266 arduino libraries only support TLS 1.1 which is not compatible with the TLS 1.2 minimum for AWS IoT. I am super excited for this board and would love to be able to kick of lambda functions automatically in response to device events. If anyone from the IoT team comes across this please make this a priority, all of us makers wi…

Post by lovelearning » Tue, Feb 23, 2016, 5:26 AM UTC

mmanfrin wrote: post #53

Question to those who know the landscape of little microcontrollers well: if I wanted to build a small pet tracking chip (gps and cell, probably) that would work way out in the boonies (like middle-of-nowhere-Wyoming), where should I look? Am I right to be thinking gps+cell, or is this something where I could get away with just GPS (and somehow track where that GPS is pinging from)? And would something like a tumble…

Post by david-given » Tue, Feb 23, 2016, 9:55 AM UTC

Solarsail wrote: post #65

david-given wrote: post #29

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That's loads . Seriously, it's a huge amount. Most other comparable microcontrollers have about 2kB. Interestingly, it looks like this is a von Neumann device! Which means that code and data live in the same address space. Memory map here: http://www.esp8266.com/wiki/doku.php?id=esp8266_memory_map Looks like it's got a whopping great 512kB internal SPI ROM device too, and indications are that it's reprogrammable. You…

Very tangentially related, but: if FRAM on the MSP430 saves its state on power loss, my mind went straight to Smalltalk. It's like hardware support for saving an image. Tho from an efficiency standpoint, smalltalk might be pushing it more than MicroPython is. That, and a smalltalk editor on a machine too small to fit a vi clone might be even more of a stretch. lol.

Post by StavrosK » Tue, Feb 23, 2016, 11:00 AM UTC

humancell wrote: post #68

StavrosK wrote: post #50

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That looks interesting, but I can't find much information on your site, it seems to be a stockish install. Is there any more info somewhere?

Yes ... the website is a "work in progress" and we just got our second round of PCBs that we are testing. We're pushing to get the kits up there in the next couple of weeks. In the mean time, the Github repo is at: https://github.com/Wovyn We've got the initial KiCAD files up there, and are putting together our sample code, etc.