Search found 166 matches

by torwag
Wed Feb 22, 2017 4:03 pm
Forum: ESP8266 boards
Topic: Newly flashed D1 mini disconnects after a few sec
Replies: 10
Views: 161

Re: Newly flashed D1 mini disconnects after a few sec

I fried one of my mini boards by putting 5V to the 3.3V pin by accident. Well, it killed the LDO which now gets burning hot powered from USB and it applies 5V to the ESP chip, instead of 3.3V The point why I am writing this here. The ESP works fine. However, it gets hot and possibly will receive dam...
by torwag
Tue Feb 21, 2017 3:44 pm
Forum: Drivers for External Components
Topic: Touch GUI for the official Pyboard display
Replies: 5
Views: 164

Re: Touch GUI for the official Pyboard display

It's just too bad that micropython hardware is so expensive compared to the Arduino/Pi ecosystems... Well, that is not true: 1. This is about comparing apple with pears... A 32bit uC at > 100 MHz is more expensive compared to a 8bit uC at 16 MHz... but they both serve a different purpose. 2. The ES...
by torwag
Fri Feb 10, 2017 5:20 pm
Forum: General Discussion and Questions
Topic: IPython Parallel, Hub-Workers, MicroPython and ESP8266
Replies: 2
Views: 192

Re: IPython Parallel, Hub-Workers, MicroPython and ESP8266

That looks indeed very interesting.
Thanks for sharing.
What is the aim of the ANN example? Any application behind it?
by torwag
Wed Feb 08, 2017 9:47 pm
Forum: ESP8266 boards
Topic: Sonoff Touch with ESP8285 and Micropython
Replies: 9
Views: 455

Re: Sonoff Touch with ESP8285 and Micropython

no not smaller.... bigger 86mm frame vs. 71mm drill distance for German junction boxes.... that means you can't get two of those switches in a row nor does the switch fit in a standard 2x, 3x, or 4x frame as we know it in Germany. Well basically, the touch is a single tiny sensor plate of a few cm r...
by torwag
Wed Feb 08, 2017 8:09 pm
Forum: ESP8266 boards
Topic: Sonoff Touch with ESP8285 and Micropython
Replies: 9
Views: 455

Re: Sonoff Touch with ESP8285 and Micropython

Yesterday, I noticed another annoying fact which is going to be a project killer for many of us. I tried to install the switch for testing and noticed that the frame of the switch is 86mm x 86mm. At least in Germany the space between two junction boxes in a row (or column) has to be 71mm. This is a ...
by torwag
Tue Feb 07, 2017 8:09 am
Forum: Hardware Projects
Topic: Driver for WS2812 RGB LEDs (NeoPixels, ...)
Replies: 21
Views: 4742

Re: Driver for WS2812 RGB LEDs (NeoPixels, ...)

Beside of deshipus comment, many sources on the net state that you should use some resistors and blocking capacitors in front of the first LED since they tend to be quite easily harmed by voltage spikes. Honestly, speaking I never did this and did not kill a single LED yet. Just wanted to mention. A...
by torwag
Tue Feb 07, 2017 8:00 am
Forum: Hardware Projects
Topic: Driver for WS2812 RGB LEDs (NeoPixels, ...)
Replies: 21
Views: 4742

Re: Driver for WS2812 RGB LEDs (NeoPixels, ...)

Just a side note:

Code: Select all

 return (int(r*256), int(g*256), int(b*256))


Should that not be 255 instead of 256? A solid 1.0 returns otherwise an overflow for the neopixel buffer (off instead of full bright)
by torwag
Mon Feb 06, 2017 3:44 pm
Forum: Development of MicroPython
Topic: hiding python code on the board
Replies: 21
Views: 594

Re: hiding python code on the board

I wrote this in a similar context already. It is always about how "secure" something should be. This is a typical 80%-20% problem You have to invest 20% of your resources (time, work, clever ideas and hacks) to make it secure against 80% of all possible attackers. From there you have to sp...
by torwag
Mon Feb 06, 2017 8:59 am
Forum: ESP8266 boards
Topic: Sonoff Touch with ESP8285 and Micropython
Replies: 9
Views: 455

Re: Sonoff Touch with ESP8285 and Micropython

@cartere: Thanks for the input. From what I read, I have to use dio, since the internal flash rom is connected in the "Dual I/O" mode (-fm dio). I don't think that anything on the hardware site is going wrong, since I can upload arduino-based firmwares without a problem. It has to do somet...
by torwag
Sat Feb 04, 2017 2:21 pm
Forum: ESP8266 boards
Topic: Sonoff Touch with ESP8285 and Micropython
Replies: 9
Views: 455

Re: Sonoff Touch with ESP8285 and Micropython

Hi, @kfricke thanks for looking into it. I looked a bit more into it. Indeed the oscillator on the PSF-A85 (which I believe is what they soldered on the sonoff touch) is a 26MHz version. And that should be e.g. identical with the WeMos units. Thus, different or strange baud rates could not be the re...

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