Initial commits, migrating repo

README.md

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+# fosdem-talk
+
+A FOSDEM talk about the wonders of the amateur radio world. And SDRs and stuff.
+
+## Notes
+
+Outline:
+  Introduction to Amateur Radio:
+  * Brief history of the hobby.
+
+  Communication in Amateur Radio:
+  * Baofeng UV5R(the default radio)
+  * Exploring the various modes of communication, such as voice, Morse code, digital modes, and satellite communication.
+  * Overview of HAM communications - local and global.
+  * Even in the absence of traditional infrastructure during emergencies or natural disasters.
+  * Highlighting the role of amateur radio in providing a platform for international friendships.
+
+  Hardware in Amateur Radio:
+  * Overview of equipment
+  * Discussing the design and construction of homebrew equipment, fostering creativity and technical skills.
+
+  Software in Amateur Radio:
+  * Introducing software applications used for signal processing, digital modes, and satellite tracking.
+  * Discussing the integration of amateur radio with open-source software and its impact.
+
+  Conclusion and Q&A Session:
+  * Highlighting the community-driven nature of amateur radio.
+  * Regulatory aspects and licensing requirements.
+  * Summarizing the key takeaways and the enduring appeal of the amateur radio hobby.
+  * Engaging the audience in a Q&A session to address their queries and encourage further exploration.

rc-car/.gitignore

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+_env/
+old/
+__pycache__/
+.ipynb_checkpoints/

rc-car/RCCar.py

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+from subprocess import run, DEVNULL
+from os import path
+from enum import Enum
+from time import sleep
+
+class Direction(Enum):
+    FORWARD = "Forward.complex" # car go vroom vroom random distances
+    BACKWARD = "Back.complex" # same here but backwards
+    LEFT = "Left.complex" # 360 + n*36 degrees at a time
+    RIGHT = "Right.complex" # 360 + n*40  degrees at a time
+    FINE_FORWARD = "Fine_forward.complex" # 30cm 
+    FINE_BACKWARD = "Fine_back.complex" # 30~cm
+
+class RCCar:
+    def __init__(self):
+        self.sample_rate = 2_000_000
+        self.frequency = 27_150_000
+        self.bandwidth = 4_000_000
+        # Get path of current file
+        self.angle = 0
+        self.forward = 0
+        self.backward = 0
+        self.signals = path.dirname(path.realpath(__file__)) + "/signals/"
+    
+    def move(self, movement_file) -> str:
+        if movement_file == Direction.LEFT.value:
+            self.angle += 3
+
+        
+        silent = run(["hackrf_transfer",
+              "-t", f"{self.signals}{movement_file}",
+              "-f", str(self.frequency),
+              "-s", str(self.sample_rate), 
+              "-b", str(self.bandwidth), 
+              "-x", "47",
+              
+            ],
+            stdout = DEVNULL,
+            stderr = DEVNULL
+            
+            )
+        return movement_file
+    
+    def test_move(self):
+        for direction in Direction:
+            self.move(direction.value)
+            sleep(1)
+
+
+if __name__ == "__main__":
+    car = RCCar()
+    car.test_move()

rc-car/README.md

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+## RC-Car
+This is where I will upload all of the information regarding the RC car hacking.
+
+<p align="center">
+<img src="https://media.discordapp.net/attachments/458628210272239626/1121750003669549066/IMG_20230622_162634_514.jpg?width=374&height=664" alt="RC car in the store"/>
+</p>
+
+Technical information about the transmitter:
+* Uses a [YX 4116 21013](https://www.chinaglobalmall.com/products/559732132610) chip.
+* The board is HY-4T69 40M
+* Receiver works on 27.15MHz
+* Transmitter transmits at 29.15
+
+<p align="center">
+<img src="https://media.discordapp.net/attachments/458628210272239626/1121750003124281394/IMG_20230623_131159_876.jpg?width=374&height=664" alt="RC car transmitter"/>
+</p>
+
+## TODOS
+* [x] Record
+    * [x] Forward
+    * [x] Backward
+    * [x] Left
+    * [x] Right
+* [ ] Make a cool demo of fine controls
+* [ ] Record a cool trick and make it consistent

rc-car/Untitled1.ipynb

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+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "id": "d9d52021-6ba8-48b2-8a0d-e434635c4085",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "from RCCar import RCCar, Direction"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "id": "8c491527-223f-4acf-af27-bdb49689e576",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# Defining the car\n",
+    "car = RCCar()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "id": "1a055dd5-1ff3-446d-a8e6-9217c1183f0f",
+   "metadata": {
+    "scrolled": true
+   },
+   "outputs": [
+    {
+     "name": "stderr",
+     "output_type": "stream",
+     "text": [
+      "call hackrf_set_sample_rate(2000000 Hz/2.000 MHz)\n",
+      "call hackrf_set_baseband_filter_bandwidth(3500000 Hz/3.500 MHz)\n",
+      "call hackrf_set_hw_sync_mode(0)\n",
+      "call hackrf_set_freq(27150000 Hz/27.150 MHz)\n",
+      "Stop with Ctrl-C\n",
+      " 3.9 MiB / 1.000 sec =  3.9 MiB/second, average power -3.6 dBfs\n",
+      " 1.1 MiB / 0.265 sec =  4.2 MiB/second, average power -4.6 dBfs\n",
+      "\n",
+      "Exiting...\n",
+      "Total time: 1.26459 s\n",
+      "hackrf_stop_tx() done\n",
+      "hackrf_close() done\n",
+      "hackrf_exit() done\n",
+      "fclose() done\n",
+      "exit\n"
+     ]
+    },
+    {
+     "data": {
+      "text/plain": [
+       "'Left.complex'"
+      ]
+     },
+     "execution_count": 3,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "# Moving to the left\n",
+    "car.move(Direction.LEFT.value)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "758b7a2a-53fb-41aa-883c-d32a233cfd3f",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "20d0cd4a-211c-4b29-af95-3a8d270fcc5d",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3 (ipykernel)",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.11.3"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}

rc-car/moves.py

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+from RCCar import RCCar, Direction
+from time import sleep
+
+def u_turn(car: RCCar):
+  print("Moving back...")
+  car.move(Direction.BACKWARD.value)
+  print("Moving forward...")
+  car.move(Direction.FORWARD.value)
+
+  print("Turning left...")
+  for i in range(10):
+    car.move(Direction.LEFT.value)
+    
+
+def main():
+  car = RCCar()
+  u_turn(car)
+  # 10
+  
+if __name__ == "__main__":
+  main()