💬 MyMultisensors

[alexsh1]

@Konrad-Walsh Click on the link and see it yourself ;-)
PCB means a bare board and not a ready product. You have to procure parts and assemble it.

[Konrad Walsh]

@alexsh1 Thank you

[alexsh1]

@Konrad-Walsh said in 💬 MyMultisensors:

you

No problem.

@scalz There is a lot of interest from others to have an assembled sensor. Maybe as a suggestion, you would be interested talking to Itead or similar guys to get it arranged?
Personally, I am comfortable assembling an SMD board down to 0605 (though it is more difficult with the fan). My preference would be 0805 and up

[scalz]

thx for the interest though :)
for the moment, the quotation i got was not so great imho.. oki i'll try again with other fabhouse for this one ;) as v2 will cover nrf only

[Nca78]

@scalz could you give an idea of the price ? I'm curious :)

[Carywin]

Where might I find the source code?

[alexsh1]

@Carywin a source code for what? There are many combinations of sensors.
I am sure @scalz can help :-)

[bjornhallberg]

Still very much interested in buying the board with RFM69 footprint! Just saying!

[alexsh1]

@scalz do you mind me asking where you bought PIR lens, eeprom, and most important that fancy small antenna??? Thanks

[scalz]

sorry to be so quiet actually :)
I buy most of my ic at electronic suppliers like Mouser, Digikey, Arrow etc.

• the flash is AT25DF512C-MAHN-T . But for coincells, ota+rfm69 is a bit too much power hungry, imho..
• the small pcb antenna is ANT-868-USP but it was for fun, as a simple wire antenna works as well and is cheaper.
• PIR and PIR lens are from aliexpress or ebay. PIR is LHI968. And fresnel type is 8120.
  An example of link for the lens:
  http://www.ebay.com/itm/10-PIECE-White-Fresnel-8120-PIR-infrared-mini-sensor-lights-small-Lenses-/142190239995?hash=item211b32e0fb:g:WsAAAOSwEHpZJnuW

[alexsh1]

@scalz Thank you. I do shopping at those sites as well if I do a large order, but delivery charge is just killing if I need to order 1-3 items.

I am going to try 2450 with your board. It has 600mAh so I am hoping that using eeprom is fine with this coincell. Regarding 2032, I agree with you. I have a node, which consumes 5-6uA (with watchdog) and I had to disable the LED to use it with coincell. It just drains too much energy from a low capacity battery.

Yes, simple wire would work fine, but ANT-868-USP is just looking very tidy.

[alexsh1]

Just waiting for some components to finalise it

[scalz]

@alexsh1
nice assembly :+1: oshpark i guess ??
I agree too, for PIR use, CR2450 is a minimum.
Well, with my tinkering and some stock in case, i usually get very quickly the free shipping..
but you can find these flash at Arrow for instance, they just need 20€ min order.
I guess you already have those, but for example,, coincell holders etc are not really cheaper at aliexpress etc..
Time to do some stock for stuff you need perhaps :)

[alexsh1]

@scalz yes, it is oshpark- I usually use them as the quality is exceptional. And typically I only need 3-4 pcbs anyway.
Unfortunately, I do not have oven and do not use smd stencil, which means the process is very long and manual. A lot of hot air fan work under the magnifying glass, but given this is not a board with too many components, it works.

You should get some commission from Arrow. I have just placed my order for eeprom and some parts ;))

[Sergio Rius]

Good job! Looking forward for a assembled version for buying. (NRF, of course :grinning: )

[Carywin]

@scalz I ordered some boards and components which are on the way, but I can't find the source code anywhere?

[alexsh1]

@scalz - I forgot to burn a bootloader onto a blank atmega328p tqfl. Can I burn it using your pogo pads? The only problem is that it my Adruino ISP is running at 5V. I do not have radio soldered. I am not going to damage anything connecting 5V to VCC3?

[scalz]

@alexsh1 pogopads are there for this. But SI7021, and others sensors are not 5v tolerant :grimacing: You'll need to use a regulator, and perhaps get a cheap 3v/5v programmer

@Carywin source code depends what you need. you can also use some examples from MySensors website. when i'll get more time (actually busy), i'll upload mine (need to check if it needs some polishing) or some examples.

[alexsh1]

@scalz I did manage with 5V. Just de-soldered SI7021 and uploaded DualOptiboot. Other components are 5V tolerant. Having said that, I recall I did upload a different bootloader at 5V to Sensebender Micro (without nrf24l01+) without damaging SI7021.

R22 has to be changed for 330 Ohm as 1.5k was way too dark and not visible. I like bright LEDs you know :-))

[scalz]

@alexsh1 i can see the led with 1k5 :laughing: i'm using it only for debug on my side. But you're right, if you want more brightness. just be careful to not drain too much if you're using a coincell ;)