Sensebender Micro

[hek]

MySensors first official board is now available for pre-orders. The price is $14 which basically is the component and assembly cost for our partner Itead Studio. Each board sold will give a $1 contribution to the MySensors project that will be used for developing new and fun boards and helpful accessories.

Preorders:
http://imall.iteadstudio.com/mysensors-micro.html

Technical specification and documentation will be available here:
http://www.mysensors.org/hardware/micro

If you'd prefer to create your own Micro board from scratch you'll find the eagle files here:
https://github.com/mysensors/SensebenderMicro
Note: Hand soldering 0402 component is a challenge... you've been warned ;)

If you want to read up on the history of this board have a look at this thread:
http://forum.mysensors.org/topic/510/minimal-design-thoughts

Support questions can be posted here.

[bjornhallberg]

In case anyone is wondering, shipping costs seem to be as follows, for example (to Sweden):

1 board: Registered Air Mail $4.52 or DHL $23.01
5 boards: Registered Air Mail $6.43 or DHL $23.01
...

I assume this is the standard "tax-free" Chinese packaging system when using air mail? (i.e. no invoice in the bag, not the real value on the bag)

[hetbeest]

Does it need a FTDI USB to TTL Serial Adapter to upload sketches?

[hek]

Yes, FTDI, ISCP or over-the-air updates.

It comes pre-programmed with MySensors variant of the DualOptiboot-bootloader.
https://github.com/mysensors/DualOptiboot
Which can take advantage of the extra flash memory to do a safe over-the-air firmware update.

(Disclaimer: I haven't had the opportunity to actually test this particular code in the development branch just yet)

[tbowmo]

@hetbeest

Just want to add a note about the ftdi usb to TTL, it should be capable of 3.3V, as this is the operating voltage of the board.

[gloob]

Is there any idea when the pre-order phase will be over and the production and shipping will start?

[tbowmo]

@gloob

According to itead they would start shipping 20th of may.

[gloob]

Will it be preloaded with the temperature/humidity functionality, that I only have to attach the NRF24L01 module and the gateway will automatically detect it?

Currently I don't own a programmer to upload programs. I did only work with arduino nanos with a USB Interface.

[hek]

@gloob

Yes, it will be preloaded with a sketch reporting temperature and humidity level using the auto assigned id from controller.

https://codebender.cc/sketch:110812

[FotoFieber]

My ISP programmer uses 5V. Is it compatible, if I remove the NRF24L01+?

[tbowmo]

@FotoFieber

It depends, if you are supplying the board from the ISP programmer, then Si7021 and the external flash will die very quickly, as they are not 5V tolerant..

you can read more here

[axillent]

My congratulation! It is very cool stuff!
Why not to post this thread http://forum.mysensors.org/topic/510/minimal-design-thoughts to the useful links on iteadstudio product page?

[nutcracker]

Great stuff! Boards ordered....!

[FotoFieber]

Yes, great stuff, ordered 6... wish they were available 4 weeks ago: I wouldn't have designed a minimal PCB/NRF based on the DIL version of the 328,,,,

[hek]

Just ordered 6 for myself. I wouldn't want to miss out on the first batch. Only around 100 left.

Talked to Itead today. They had to source the ATSHA204A from overseas and will start production when they arrive.

[RJ_Make]

Picked up 5 myself

[korttoma]

What would be the best option to add an external temperature sensor to the Sensbender Micro?
Another Si7021? Any thoughts?
I could not find any other I2C temperature sensor with the same voltage range to a reasonable price.

[kalle]

@hek said:

Just ordered 6 for myself. I wouldn't want to miss out on the first batch. Only around 100 left.

Talked to Itead today. They had to source the ATSHA204A from overseas and will start production when they arrive.

bought also 3 pieces :-)

[mvader]

I picked up 3 and 5 radios

[hetbeest]

Just ordered two to start with ;)