mbohun

where-am-i_2_geojson.sh

1. On the Linux phone (Motorola Edge 30 running postmarketOS), run record_gps.sh
2. That will save the GPS output into a file; example: ~/record_gps/record_gps_2026-08-02_20-24-43.out
3. Those output files are then processed with where-am-i_2_geojson.sh to create GeoJSON output; example:

   mbohun@orangepi5pro:~/src/where-am-i_2_geojson$ ./where-am-i_2_geojson.sh record_gps_2026-08-02_19-44-09.out
   

4. The GeoJSON files can be used/tested/verified/further-edited with any GeoJSON app; example: https://geojson.io/ or QGIS, etc.

MORE EXAMPLES:

mbohun

INSTALLING postmarketOS on Motorola Edge 30

dmesg -T

• my Linux "PC" for this installation is Orange Pi 5 Pro

mbohun@orangepi5pro:~$ dmesg -T
...
[Wed Jul 22 20:47:23 2026] usb 1-1: new high-speed USB device number 3 using xhci-hcd
[Wed Jul 22 20:47:23 2026] usb 1-1: New USB device found, idVendor=22b8, idProduct=2e81, bcdDevice= 5.04

mbohun

This is what i see in dmesg output after connecting JingPad A1 to my Orange Pi 5 Pro Linux PC:

[Thu Jun 25 11:39:44 2026] usb 1-1: new high-speed USB device number 2 using xhci-hcd
[Thu Jun 25 11:39:44 2026] usb 1-1: New USB device found, idVendor=18d1, idProduct=4ee7, bcdDevice= 4.04
[Thu Jun 25 11:39:44 2026] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[Thu Jun 25 11:39:44 2026] usb 1-1: Product: Unisoc Phone
[Thu Jun 25 11:39:44 2026] usb 1-1: Manufacturer: Unisoc
[Thu Jun 25 11:39:44 2026] usb 1-1: SerialNumber: A12140MKCA000287
[Thu Jun 25 11:39:45 2026] rndis_host 1-1:1.0 eth0: register 'rndis_host' at usb-xhci-hcd.8.auto-1, RNDIS device, 96:8d:83:07:4a:4e

mbohun

Quectel EM05-G (Global)

Quectel EM05 is an LTE category 4 module adopting standard M.2 (NGFF) form factor. The space-saving M.2 form factor allows EM05 to be easily integrated into smaller and thinner devices. With maximum data rates up to 150Mbps downlink and 50Mbps uplink, it is optimized specially for M2M and IoT applications.EM05 contains three variants: EM05-CE, EM05-E and EM05-CML, which can provide data connectivityon LTE-FDD, LTE-TDD, DC-HSDPA, HSPA+, HSDPA, HSUPA, WCDMA and CDMA networks.A rich set of Internet protocols, industry-standard interfaces and abundant functionalities (USB drivers for Windows 7/8/8.1/10, Linux and Android, DFOTA, etc.) extend the applicability of the module to a wide range of M2M applications such as industrial router, industrial PDA, rugged tablet PC, video surveillance and digital signage.

Key Benefits

• LTE-A Cat.4 module with M.2 form factor, optimized for M2M and IoT applications
• Quectel Wireless Solutions product -

REFERENCES:

mbohun

AI models for local deployment

Company	Model(s)	Parameters	Local Deployment Method	License
DeepSeek	DeepSeek-V3, DeepSeek-R1	Various	Ollama, vLLM, llama.cpp	Open weights
Mistral AI	Ministral 3, Devstral Small 2	14B, 24B	Ollama, vLLM	Apache 2.0
Google (DeepMind)	Gemma 4 12B	12B	Ollama, vLLM, SGLang, MLX, llama.cpp, LiteRT-LM	Apache 2.0
Meta	Llama 3 (8B Instruct, 70B)	8B, 70B	Ollama, llama.cpp	Llama license
IBM	Granite 4.0 (series)	350M to 3B+	Ollama, vLLM	Apache 2.0
xAI	Grok 2	270B	llama.cpp (GGUF quantized)	Grok Community License

mbohun

#include <SDL3/SDL.h>
#include <SDL3_ttf/SDL_ttf.h>

int main() {
    SDL_Init(SDL_INIT_VIDEO);
    TTF_Init();  // Initialize the font system
    
    SDL_Window* window = SDL_CreateWindow("Text Demo", 800, 600, 0);
    SDL_Renderer* renderer = SDL_CreateRenderer(window, NULL);
    

mbohun

/var/lib/dkms/v4l2loopback/0.12.7/build/make.log

DKMS make.log for v4l2loopback-0.12.7 for kernel 6.1.115-vendor-rk35xx (aarch64)
Mon Feb  9 12:05:20 PM CET 2026
Building v4l2-loopback driver...
make -C /lib/modules/6.1.115-vendor-rk35xx/build M=/var/lib/dkms/v4l2loopback/0.12.7/build modules
make[1]: Entering directory '/usr/src/linux-headers-6.1.115-vendor-rk35xx'
warning: the compiler differs from the one used to build the kernel
  The kernel was built by: aarch64-linux-gnu-gcc (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0

mbohun

termux-location

install

1. install termux app
2. install termux-api app
3. open termux terminal and install:

   pkg install termux-api
   

run it

mbohun

big.LITTLE cpu-pinning

ROCKPro64

• ROCKpro64 by PINE64
  • Rockchip RK3399
• big.LITTLE architecture:
  • Quad Cortex-A53 0xd03
  • Dual Cortex-A72 0xd08

NOTE: "CPU part" identifies the A53 and A72 CPUs respectively.

mbohun

REFERENCES:

• https://geojson.io
• TODO