LowPowerLab Forum
Hardware support => Projects => Topic started by: raggedyanne on September 28, 2016, 04:59:23 AM
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Using various sources and programs & lots of time, I cobbled together my own Monteino Library ;)
I used the Semtech Lora Calculator 8)
I really wish my monteino's could be emaile to me :o
(http://lookpic.com/O/i2/1105/3F11swMb.png)
And the Lora Calc
(http://lookpic.com/O/i2/438/XBDkgTj9.png)
(http://lookpic.com/O/i2/1728/AOQjaPTK.png)
I think i need to power from farad capacitor, no way i will find a battery that lasts more the 25 years ???
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I did a personal design based on the "Monteino" concept, however i have designed a board that fits on the back of the RF9x Lora radios using an Attiny167. Since i have written my own uart & spi & lora library, I have added untested fhss & the ability to assign node & address id's whicj just fits under 8k and uses 200b.
Anywho here is my artwork ;)
(http://lookpic.com/O/i2/1030/7RxNUAYS.png)
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Because everything has to be certified & i don't have Altium Designer , I did the semtech SX1276RF1KAS_e269v01a reference design manually , it took a very long long time. I can post gerbers if anyone is interested?
(http://lookpic.com/O/i2/1426/zTa4Mdzz.png)
Only the crystal is missing @ the moment, it is school holidays & i have the kids!
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(http://lookpic.com/O/i2/415/qKje65DC.png)
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Not sure how it works in Australia, but wouldn't your board still need to be tested? For instance, the dielectric constant of the PCB your using might make a difference. At least in the US, even if the chip itself has passed FCC, that doesn't imply that anything containing that chip is automatically approved also.
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Yes, the board needs to be tested before using commercially. Safety, EMI, Efficiency, Environmental & Approval Standards, that applies for any commercial product sold to the pubic, this is a design based on a reference design. I took the time to look at the board, compare the components and estimate were they should be.