LoraWan Pager project


#21

sorry but I responded to Xenek.

No I fully understand that its fun to think about how to get things to work (he.. its my hobby too) but some ideas are a waste off time.. and this is an example imho , but don't listen to me :wink:


(Ccadic) #22

still fighting to find a professionnal quality LCD display (dot matrix). Looks like it not that easy.
sound like pagers factory have made their own :frowning:


#23

for a simple 'pager, that is pager A push a button, a digit is transmitted and received (lets forget how) by pager B, gives a sound and depending on the digit received it displays ' 1= call mom 2=call dad 3=dinners ready ' ect., you can do with a very small bright i2c oled


(Ccadic) #24

I want this kind of display for my project. :((


#25

what size is that ?

and if you want to control a little menu with your thumb :wink:


(Sandgroper) #26

https://www.aliexpress.com/item/1-8-inch-TFT-LCD-Display-module-ST7735S-128x160-51-AVR-STM32-ARM-8-16-bit/1859103944.html?spm=2114.01010208.3.73.D9TCMF&ws_ab_test=searchweb0_0,searchweb201602_1_10152_10065_10151_10068_10130_10136_10137_10157_10060_10138_10155_10062_10156_10154_10056_10055_10054_10059_10099_10103_10102_10096_10148_10147_10052_10053_10142_10107_10050_10051_10084_10083_10080_10082_10081_10178_10110_10111_10112_10113_10114_10181_10037_10182_10033_10032_10078_10079_10077_10073_10070_10123_10124,searchweb201603_9,ppcSwitch_5&btsid=803d7b2c-82a1-490a-a99c-559dd4b66e1a&algo_expid=4dc328d0-9a35-45bf-881c-35ddee172abc-12&algo_pvid=4dc328d0-9a35-45bf-881c-35ddee172abc


(Jose Marcelino) #27

I can see it working to track farm equipment, gates etc but I'd never trust the safety of a family member to LoRaWAN, just too many - fast changing - parts to go wrong. More so with some rickety cheap setup with gateways hanging at the end of microwave links.

I'd consider APRS if amateur radio license was an option, a GPS enabled transmitter is less than $100 https://www.sainsonic.com/ap510-aprs-tracker-vhf-with-gps-bluetooth-thermometer-tf-card-support-aprsdroid.html

or more likely go for Iridium ($15/month world coverage)


(Ccadic) #28

77 (L) x 53 (W) x 19 (D) mm
pager's weight is 60g


(Ccadic) #29

tnx . it is TFT ..... no LCD ... power consumption is big


(Ccadic) #30

Where can we find the blue pcb one ?
I have the up left one, but too small for most bin fingered people


#31

have to find it in my archives somewhere.
in fact the wheel is a rotary encoder + if you push a switch, very handy (I think it was expensive :sweat: )

found it


#32

(Arjan) #33

Just FYI, in case it's not on your list already:

I count 8 lines of 20 characters. Assuming LoRaWAN rather than plain LoRa, SF12 allows for 51 bytes. This is roughly about a third of the number of characters, giving you a character set of about 80 glyphs. For English, that might suffice...?

(It would need 2.8 seconds air time on SF12.)


(Ccadic) #34

I found a good quality one

http://www.chip45.com/products/dogm128w-6_lcd_display_modul_grafik_128x64_pixel_seriell_spi.php


#35

And you will connect your gateway to the internet how?

Really, you're just moving the issue. The best and imo only way to provide resilience against 'external influence' is plausible deniability in the form of end-to-end encryption. You can do that over any network medium. Shifting the last mile from cellular to LoraWAN will not change anything, because you will still have to rely on network mediums that can't be trusted to connect your gateways to the internet, to connect your server to the internet etc. If the government wants your pager down, they'll just send a warrant to the ISP of your gateway or server.


(Jose Marcelino) #36

Encryption alone won't help much in the way of resilience if the 'external influence' can just cut your backbone network access so I think alternative network mediums are still worth investigating.

But yes maybe LoRaWAN isn't ideal because of the coordinated network server requirement. Maybe the P2P LoRa as @ccadic was saying before.


(Ccadic) #37

The best , is probably to experiment and see.
I'll try. a P2P concept is oviously needed. With transcoder GW modules to interconnect to existing system.
The immunity to External Influence is not the main goal anyway, it is only a part of the project


#38

there is a tool named startdogV43 to get an idea how that (expensive with backpanel!) display looks.


US $7.44 - http://www.ebay.com/itm/302285955198? :wink:

(just bought one myself to test for another project)


(Kiwiclan) #39

Should maybe start some crowd funded projects to detect when the NSA start experimenting on cracking the home gateways. Oh wait... I thought one of the existing ttn meetups in Eindhoven was going to talk about some hack detection software. Maybe inspired by this very threat :slight_smile:


#40

nothing new

anyway.. as they control 99% off all big exchanges in the world you won't detect this imho.

visible part of the UTAH datacenter


somebody somewhere is allready building 'spynodes :slight_smile: