💬 Sensebender Micro

[djbonet]

Hi team,
By curiosity running the Atmega328p at 8mhz down to 1.8v isn’t out of spec ?
Does it work reliable ?
Should we div8 clock speed than mesure vcc and set prescaler accordingly ?
Just by curiosity for further project I see a lot of info to not go above 4Mhz at 1.8mhz as the data sheet and other that it’s working stable even a 8mhz

Thanks all !

[mfalkvidd]

@djbonet yes, running the atmega328 at 8MHz and 1.8V is out of spec.
Yes, sometimes running out of spec doesn’t cause problems.

[djbonet]

@mfalkvidd
Thank you for your fast answer

[mfalkvidd]

@djbonet you’re welcome. If I remember correctly, the datasheet diagram shows the limit for 8MHz to be 2.4V

[marnej]

Hello
Can't compile skech .. .does anyone have updated ?

[martim]

Is there a way to order this board somewhere else. I have ordered now 3 times 2 boards. 2 times 1 board broken and it is very hard to communicate with them and almost never reply.

[tbowmo]

@martim

Unfortunately we do not have any other manufacturing partners, so all sensebender boards are produced by itead.

How did you confirm that the board where broken? Have you tried starting the self test in the standard firmware that the micro is delivered with?

The factory firmware is available at
https://github.com/mysensors/SensebenderMicro/blob/master/Arduino/SensebenderMicro/SensebenderMicro.ino

[SuperNinja]

@tbowmo I am using Sensebender Micro on an ATMega328p Barebones with internal 8MHz and RFM69 working good. Since I don't have quartz connected on PB6 and PB7, I would like to use these ports. I tried from 14 to 21 but unable to flash my led (connected to PB6).
With Minicore: PB6 and PB7 are 20 and 21 respectively.
With Sensbender Micro, what are the ports? (if they exist)

[keithellis]

Hello, really interesting in getting a few of these Sensebender Micros, but it does not seem to be available any more. Will they be coming back into stock?

[tbowmo]

@keithellis
They should be available here https://itead.cc/product/mysensors-micro/

[keithellis]

@tbowmo Thats great, thank you. The URL seems to have changed.

[keithellis]

Hi there,
Just received a couple of Sensebender Micro's, really excited to get them up and running. I'm trying to compile the sample code, but I can't find a library for the sha204, I'm getting the following error:

sha204_lib_return_codes.h: No such file or directory

Any idea how I can solve this please.
thank you.

[mfalkvidd]

@keithellis the file is in the same folder as the example sketch: https://github.com/mysensors/MySensors/tree/development/examples/SecurityPersonalizer

How did you install MySensors? How did you open the SecurityPersonalizer sketch?

[keithellis]

@mfalkvidd Thanks for the response. I was not trying to compile the SecurityPersonalizer sketch, I was trying to compile the Sensebender Micro example sketch, this apparently also needs the sha204xxx files. I copied these files over from the SecurityPersonalizer sketch and it works now. thank you.

I think sha204xxx files should also be put in the Sensebender Micro folder. Or some directions on the Sensebender Micro page on where to get these files.

[mfalkvidd]

Thanks for explaining @keithellis

I am not familiar with the sensebender micro but what you suggest sounds reasonable.

Is this the sketch you are using? https://github.com/mysensors/SensebenderMicro/blob/master/Arduino/SensebenderMicro/SensebenderMicro.ino

[keithellis]

@mfalkvidd Yes, that’s the one.