💬 Sensebender Micro

[phildefer]

@tbowmo

I upgrade my sensebender firmware with the new one (V1.4), and i have a question.

In the sketch (https://www.mysensors.org/hardware/micro) the line

//#include <avr/power.h>

is commented.

Is it "normal" or is it a mistake ?

[tbowmo]

@phildefer

I think it's a leftover from a cleanup at some point in time. Not used anymore.. The MySensors core library is handling the sleep mechanism now.

[denisvdb]

To reprogram the sketch in a sensbender micro, wich board must be selected in the arduino prg?
I have problem with inclusion in jeedom, the command are not loaded.
thx

[marceltrapman]

@fearoffish did you manage to get this working?
And, if so, what was the issue?

I am looking into changing to PlatformIO on Atom or even CLion...

[loic13]

Hi, I'm getting this error message when compiling the sketch with the 2.1.1 MySensors library:
SensebenderMicro:168: error: 'getConfig' was not declared in this scope
isMetric = getConfig().isMetric;

I just commented out the line as workaround, but not sure that its correct.

[hek]

Hmm.. The api was recently changed to getControllerConfig().isMetric;

I'll update the example.

[loic13]

Thank you.

[Toyman]

How difficult is to replace 0402 components with 0603 or 0804 components in Eagle? I am too old for 0402 soldering :-)))

[tbowmo]

@Toyman

Not that hard, but you'll probably need to redesign the board, to get room for the larger components.

Another option is to order the board pre-assembled from our partner, itead studio

[martinhjelmare]

I've tested to upload a sketch to the Sensebender Micro using platformio.

Put the following JSON into a json file in a folder named boards either in the MySensors library folder (your project in platformio), or somewhere else on the search path. Use the name of the json file in platformio.ini in the board setting. See for more info:
http://docs.platformio.org/en/latest/platforms/creating_board.html

• Create a folder named boards in MySensors project folder.
• Create a file in boards named sensebendermicro8MHz.json.

{
  "build": {
    "core": "arduino",
    "extra_flags": "-DARDUINO_ARCH_AVR -DARDUINO_AVR_PRO",
    "f_cpu": "8000000L",
    "mcu": "atmega328p",
    "variant": "standard"
  },
  "frameworks": [
    "arduino"
  ],
  "fuses": {
    "efuse": "0x06",
    "hfuse": "0xD2",
    "lfuse": "0xE2",
    "lock": "0x3F"
  },
  "name": "Sensebender Micro (3.3V, 8 MHz)",
  "upload": {
    "maximum_ram_size": 2048,
    "maximum_size": 30720,
    "protocol": "arduino",
    "require_upload_port": true,
    "speed": 57600
  },
  "url": "https://github.com/mysensors/SensebenderMicro",
  "vendor": "MySensors"
}

• Add an env in platformio.ini.

[env:sensebendermicro8MHz]
platform = atmelavr
framework = arduino
board = sensebendermicro8MHz
lib_deps = MySensors

• Compile sketch.
• Upload sketch.

I think I've got the settings correct, but it was the first time I did this. But it's tested and works as far as I can see.

Should we add a JSON file to one of the mysensors repos on github?

[marceltrapman]

I have a bunch of W25X40CLSNIG-ND lying around.
They have the same size and same layout as far as I can see.

Is my thinking correct that I should be able to simply replace the AT25DF512C-SSHN-B, change the sketch and use it?

[tbowmo]

@marceltrapman

If it's a jedec compatible flash, then you should be able to swap.. But what is the usecase of a larger flash? You can't execute code in the external flash.. So for OTA you still only have a bit under 32Kbyte usefull space..

[marceltrapman]

@tbowmo no case at all, just that I have them and otherwise probably won't use them..

[Michiel van der Wulp]

To reprogram the sketch in a sensbender micro, wich processor frequency do I choose?

After choosing Board "Sensebender Micro", the menu in Arduino 1.6.12 has choice Processor "Atmega328 8MHz" and "Atmega328 1MHz".
My code seems to be executed equally fine with both settings.
But the Arduino Serial Monitor not:

If I choose the 1MHz version, the Serial monitor only produces garbage, whatever setting I choose for baud (in the sketch and in the serial monitor UI).

If I choose the 8MHz version, the serial monitor works fine.

I am confused. The Sensebender is a 1MHz device, isn't it? Is it able to run on 8MHz too?

[tbowmo]

@Michiel-van-der-Wulp

No, it runs at 8Mhz. It is asleep most of the time, so running at 8Mhz is actually more battery conserving, than running at 1Mhz (in theory), as shown in calculations over in this post. This is due to the shorter time powered on, when running at 8Mhz, compared to running at 1Mhz.

[Michiel van der Wulp]

OK, I understand.
My confusion was caused by the second sentence at https://www.mysensors.org/hardware/micro : "... it operates at 1Mhz ..."
That's a mistake then?

[tbowmo]

@Michiel-van-der-Wulp

Yes, sorry that was a false statement. I have modified the description, so that it now states that the Micro is running at 8Mhz.

[marceltrapman]

I am thinking of expanding the Sensebender Micro and learn Kicad in the process.

Unfortunately every attempt to convert from Eagle to Kicad failed.

Is there a Kicad version available or did any of you manage to convert the project?

[tbowmo]

@marceltrapman

There is no kicad project available for the Sensebender Micro, I tried to convert it myself, but didn't succeed with it either.

[blacey]

@tbowmo said in 💬 Sensebender Micro:

@marceltrapman

There is no kicad project available for the Sensebender Micro, I tried to convert it myself, but didn't succeed with it either.

I haven't tried this Eagle->KiCAD convertor myself but it might do the trick or at least reduce a lot of the manual labor to convert...

There's even a tutorial video.