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Have a question?
Hi Mark, firstly thank you for backing our Kickstarter project. Luckily we felt more than encouraged to make the SARA Arduino Form Factor and the SARA Small Form Factor a reality, therefore they are currently sold through our webshop at: https://shop.sodaq.com/nb-iot-lte-m/.
In terms of any funding or payment which is done through Kickstarter, I would recommend you to contact them directly. Kickstarter only funds a project when the target is reached, so no money should be withdrawn from your credit card.
Hopefully this gives an answer to your question, if not let us know!
Now that the project is not funded how does that work? No withdrawal from our credit card at all? or a refund on the card?
Are you stil moving forward and will the boards be available in your webshop?
Thanks for your inquiry, to answer your question. We've tested the GPS module in alle of our own cars and it seems perfectly fine when it's placed under the windshield however if it's fully surrounded by metal it'll not work. To follow-up on your comment about the installfest, we'll still be happy to have you over and meet in person!
Thanks for the info. I have a followup question. Since I'm interested in using this board in vehicle tracking (among other things), how well does the GPS work within metal enclosures like the body of a car?
Otherwise I'll switch to backing the SFF version - unfortunately losing my installfest invite :(
Good luck on getting funded, I hope you make it!
Thanks for writing about GPS power consumption. I must say that your product is ALMOST exactly what I asked Santa for Christmas. ;) Except, I would really have loved to see the u-blox ZOE-M8B chip for the lowest power consumption possible... My guess is that the chip was not available when you developed the product initially. Do you think you will eventually make a new product with that chip? Or do you provide custom PCB design?
Also, I would pledge for the SFF-R410 but it is not available. :(
Keep up the great work!
Yes the boards have a LiPo battery charging circuit, so they can be charged over USB and with a small solar panel.
In deep sleep the board uses only around 20 uA. Of course the GPS is quite power hungry since a GPS fix may take anywhere between 1 and 120 seconds at around 40mA. We generally see that when we do a GPSfix every 5 minutes (and turn the GPS to deep sleep in between) the average fix time is around 3 seconds. So that means that the GPS will then average around 0.4mA. If however you use the accelerometer to wake the GPS only when there is motion you can bring down the power usage even further.
Sending a NB-IoT message takes around 100 uWh (= ~ 30 uAh).
So if you have a 2000mAh battery you could run it for weeks or months, depending on the number of times it is triggered by motion.
Both T-Mobile and Vodafone will be issuing free trial sim cards. The early access program of T-Mobile is already live: https://iot.t-mobile.nl/early-access-program
We expect Vodafone to follow soon.
Great product! Some questions. A couple of questions:
1. Does solar or USB power charges the LiPo battery? (does it have some kind of pass-through-charging, similar to AdaFruit PowerBoost 1000).
2. Can you tell me a bit more how powerhungry the board is (e.g. wattage). E.g. how long can you use a 2.000 mAh LiPo to sent a GNSS position every 5 minute if there is some movement.
3. Can you give more details about the NB-IoT offerings of Vodafone and T-Mobile of the SIM cards you provide?
Why are there no installfests for SFF versions? As backer 36 and one of the first that buys a specific version I thought this would qualify as early bird.
I wił need extrrnal antenna connector because I wants to use your equipment with Spirent 6300M signal generators
No, it is not possible to connect an external GPS antenna to the regular-sized board. We have chosen to use the GPS module with integrated antenna. On the SFF board we do use external antenna's.
Is it possible to connect an external GPS antenna to the regular-sized board?
Thanks for backing us! We will share all materials on-line on our support pages:
It is is still a work in progress, but you will probably already find what you are looking for!
Hi I'm considering to buy a few devices for Institution can you send me PDF Manuals od your equipment? Thank you in advance!