Welcome back, CNLohr!

https://www.youtube.com/watch?v=eIdHBDSQHyw

Started in January 2024 with discussions with mustardtiger / Frank
Charles had done Wifi long range before
Also FM from ATTINY85
Ethernet + AM
Radio signals without radios
USB
Harmonics
LolRa
Upchirps / downchirps
903.825 – 903.975 mhz
Michael Ossmann talk
LoRa doesn’t do code matching
JP Norair talking about LoRaWAN / DASH7
Tool / emulator for the airwaves
3 lines of the repo
Tool to create tables
There are two 2 lookup tables (up and downchirps)
Table is different for differnet spreading factors and base frequencies
Andreas Spiess LoRa/LoRaWAN distance attempts
Spreading Factor — can’t past SF10 on this setup for unknown reason
AirSpy
Matt Knight
LoRaWAN — protocol vs network
The Things Network / Helium
Activation by personalization
Nesting dolls of encryption
New parts CH32V002 (also, -005, -006. -007)
Charles is excited about the op amp on the CH32V006 that has 64 MHz GBW
CH32V203 – 144 MHz – $0.24, has usb xcvr
CH32X035 is self clocking – best low cost option for USB
All are supported in library now
Community – CNLohr discord
Porting examples for the parts using the technical reference manual
MNIST database – handwriting recognition system
Announcement post on CNX about the new parts
It’s possible to hook up parts directly through the 1 pin SWIO, so you can hot-load firmware
Writing code onto a “scratch pad”
Want to see more CNLohr experiements online?
- Youtube.com/cnlohr
- discord: cnlohr reach out for invite
- Github

#667 – Long Distance with CNLohr-a