pocket1090

Handheld, standalone, network-free, air traffic monitoring application. Uses the dump1090-fa 1.09GHz SDR-based ADS-B and Mode S/3A/3C decoder.

WIP

Key Features

Range
- Automatic: automatically select smallest (power of two Km) range that includes all current tracks
- Manual: increase/decrease range in powers of two Km distances
Trails (i.e., position points)
- show position point history
- can select no points, all points, or just the last 'N' points
Aging of Tracks
- enable/disable fade-out with time since last seen
Summary
- list of current tracks, sorted by distance from receiver
- includes: flight number, altitude, speed, direction, distance, azimuth, and category
Details
- popup with detailed information on selected track
- all current information about the track
Filters
- inside/outside altitude/speed range
- categories
- flight number (prefix)
- uniqueIds
- greater-/less-than distance
- heading

Handheld Device

TBD

Handheld Device Example Displays

Summary Mode

Details Mode

Info Mode

Interacting with the Application

Command-line Arguments
- TBD
Touch Panel Inputs
- TBD
Keyboard Inputs
- Left Arrow: reduce maximum number of trail points displayed
- Right Arrow: increase maximum number of trail points displayed
- Home: display no trail points
- End: display all trail points
- Up Arrow: increase the max distance to the next power of two Km
- Down Arrow: decrease the max distance to the next power of two Km
- 'a': auto-range -- enable auto-range mode
- 'm': manual range -- disable auto-range mode
- 'd': detail mode
- 'i': info mode
- 's': summary mode
- 'p': print info
- 'r': reset info
- 'q': quit -- exit the application
- 'h': print the keyboard inputs

SW

Raspberry Pi Zero 2W

Set up for LCD Panel
- install raspi os with 'rpi-imager'
Update OS: 'apt update; apt upgrade'
Update firmware with 'sudo rpi-update'
- to fix HDMI issue with 5.15.56+
- should be fixed in future releases
disable audio
- edit /boot/config.txt
  - add ",noaudio" to the end of "dtoverlay=vc4-kms-v3d"
  - comment out "dtparam=audio=on"
- apt-get purge pulseaudio
run 'raspi-config'
- enable SPI, I2C, and UART (no console)

4" HDMI IPS LCD with Resistive Touch Screen

Display works out of the box after standard SW setup
Enable the touchpanel:
- raspi-config puts this into /boot/config.txt:
  - dtparam=i2c_arm=on
  - dtparam=spi=on
  - dtoverlay=vc4-kms-v3d # I think this is there by default
- add this:
  - dtoverlay=ads7846,cs=1,penirq=25,penirq_pull=2,speed=50000,keep_vref_on=0,swapxy=0,pmax=255,xohms=150,xmin=200,xmax=3900,ymin=200,ymax=3900
Calibrate the touchpanel:
- 'sudo apt-get install xserver-xorg-input-evdev xinput-calibrator'
- 'sudo cp -rf /usr/share/X11/xorg.conf.d/10-evdev.conf /usr/share/X11/xorg.conf.d/45-evdev.conf'
- 'sudo ex /usr/share/X11/xorg.conf.d/99-calibration.conf' Section "InputClass" Identifier "calibration" MatchProduct "ADS7846 Touchscreen" Option "Calibration" "208 3905 288 3910" Option "SwapAxes" "0" Option "EmulateThirdButton" "1" Option "EmulateThirdButtonTimeout" "1000" Option "EmulateThirdButtonMoveThreshold" "300" EndSection
- 'sudo reboot'
variation of: https://www.waveshare.com/wiki/4inch_HDMI_LCD

RTL_SDR Receiver

set permissions
- 'lsusb' to get vendor Id and product Id
  - e.g., Bus 001 Device 005: ID 0bda:2832 Realtek Semiconductor Corp. RTL2832U DVB-T
- create file '/etc/udev/rules.d/20.rtlsdr.rules'
  - add this content:
    - 'SUBSYSTEM=="usb", ATTRS{idVendor}=="0bda", ATTRS{idProduct}=="2832", GROUP="adm", MODE="0666", SYMLINK+="rtl_sdr"'

GPS Receiver

Enable serial port without console
- using 'sudo raspi-config'
Configure and test serial port
- 'stty -F /dev/serial0 raw 9600 cs8 clocal -cstopb'
- 'cat /dev/serial0'
  - should get NMEA strings from GPS unit
N.B.
- Using $GPGGA NMEA messages to get orientation information
- Doing simple filtering of lat/lon
  - Assuming device not near poles/equator (where discontinuities occur)
- Not using gpsd to reduce background load on the CPU

9DoF IMU

RasPi didn't handle I2C clock-stretching properly
- seems to work fine with PiZero V2
install Adafruit BNO055 library from PyPi
- 'sudo pip3 install adafruit-bno055'

dump1090-fa

set up environment
- 'sudo apt-get install build-essential fakeroot debhelper librtlsdr-dev pkg-config libncurses5-dev libbladerf-dev libhackrf-dev liblimesuite-dev'
clone dump1090-fa into ~/Code2/
- 'git clone git@github.com:flightaware/dump1090.git'
patch dump1090-fa to not write history files
- e.g., as defined in dump1090.patch
build modified dump1090-fa
- './prepare-build.sh bullseye'
- 'cd package-bullseye'
- 'dpkg-buildpackage -b --no-sign'
run dump1090 from pocket1090.sh
- manual execution:
  - desktop:
    - '/home/jdn/Code2/dump1090/dump1090 --quiet --metric --json-stats-every 0 --write-json /tmp/
  - raspbian bullseye:
    - '/opt/pocket1090/dump1090 --quiet --metric --json-stats-every 0 --write-json /run/user/1000/

pocket1090

clone pocket1090 into ~/Code
- 'git clone https://github.com/jduanen/pocket1090.git'
Prepare SW Environment for the application
- install 2.x pygame
  - 'pip3 install pygame==2.1'
    - Ubuntu: pygame 2.1.2 (SDL 2.0.16, Python 3.8.10)
    - RasPi: pygame 2.1.0 (SDL 2.0.14, python 3.9.2)
- also install missing package:
  - 'sudo apt-get install libsdl2-image-2.0-0'
  - 'sudo apt install libsdl-gfx1.2-5 libsdl-image1.2 libsdl-kitchensink1 libsdl-mixer1.2 libsdl-sound1.2 libsdl-ttf2.0-0 libsdl1.2debian libsdl2-2.0-0 libsdl2-gfx-1.0-0 libsdl2-image-2.0-0 libsdl2-mixer-2.0-0 libsdl2-ttf-2.0-0'
- 'pip3 install -r requirements.txt'
install the pocket1090 application and supporting files (in /opt/pocket1090)
- './pocket1090.sh install'
run pocket1090 application
- './pocket1090.sh start'
- manual operation:
  - '/opt/pocket1090/pocket1090.py -v /run/user/1000 -L INFO -f'
    - run in full-screen mode
pocket1090.sh
- script to install, run, stop, get the status, and remove installation of pocket1090 application

systemd

install 'dump1090.service' and 'pocket1090.service' in '/lib/systemd/system'
- change permissions: 'sudo chmod 644 /lib/systemd/system/{dump,pocket}1090.service'
configure systemd
- sudo systemctl daemon-reload
- sudo systemctl start dump1090.service
- sudo systemctl enable dump1090.service
- sudo systemctl start pocket1090.service
- sudo systemctl enable pocket1090.service
- sudo reboot

HW

Enclosure

WIP

Raspberry Pi Zero 2W

https://www.raspberrypi.com/products/raspberry-pi-zero-2-w/

LCD Display

https://www.waveshare.com/product/raspberry-pi/displays/4inch-hdmi-lcd.htm
https://www.waveshare.com/wiki/4inch_HDMI_LCD
- 4" 480x800 IPS LCD display
- portrait-mode
- 170 degree viewing angle
- separate (micro-USB) power input for backlight
- HDMI video input interface
- resistive touch panel, XPT2046 controller
- 3-/4-wire SPI interface to touch panel
- 26pin dual-row connector
  - 1: 3.3V 2: 5V
  - 3: SDA 4: 5V
  - 5: SCL 6: GND
  - 7: P7 8: TX
  - 9: GND 10: RX
  - 11: P0 12: P1
  - 13: P2 14: GND
  - 15: P3 16: P4
  - 17: 3V3 18: P5
  - 19: MOSI (TP SPI in) 20: GND
  - 21: MISO (TP SPI out) 22: P6 (TP IRQ)
  - 23: SCLK (TP SCLK) 24: CE0 (TP CS)
  - 25: GND 26: CE1

RTLSDR USB Dongle

FlightAware Pro-Stick Plus: https://flightaware.store/products/pro-stick-plus
- built-in 1090MHz bandpass filter
- SMA F connector

GPS Receiver

https://www.adafruit.com/product/746
GPS Receiver
- 66 channel, 22 tracking
- 10Hz updates, 34 secs warm/cold start
- NMEA 0183, 9600 baud, 3V levels (5V tolerant)
- PA1616S module, MTK3339
- -165dBm sensitivity
- 20mA
- 3.3-5V input
- battery-backed RTC, CR1220
- Red Fix LED
  - blinks at ~1Hz while searching for satelites
  - blinks once every ~15 seconds when a fix is acheieved
- PPS output
- on-board patch antenna, u.FL connector
pins
- 3.3V (out)
- ENB (in)
- VBAT (in)
- FIX (out)
- TX (out)
- RX (in)
- GND
- VIN (in)
- PPS (out)
RasPi Connection
- GPIO 4: ENB
- GPIO 14: RX
- GPIO 15: TX
- 5V: VIN
- GND: GND
- GPIO 27: PPS

9DoF IMU

https://www.adafruit.com/product/2472
IMU
- I2C interface, Address: 0x28, 10K pullups
  - might need 3.3K SCL and 2.2K SDA for 3.3V operation
- auto-calibration
- (black-box) sensor fusion
- emits:
  - Euler Vector @ 100Hz
    - only use Euler Angles for pitch/roll < 45 degrees
  - Four Point Quaternion @ 100Hz
  - Angular Velocity Vector @ 100Hz
  - Accleration Vector @ 100Hz
  - Magnetic Field Strength Vector @ 20Hz
  - Linear Accleration Vector @ 100Hz
  - Gravity Vector @ 100Hz
  - Temperature @ 1Hz
- N.B. highly sensitive to RF -- need to worry about placement/sheilding
pins
- VIN (in): 3-5V
- 3VO (out): 3.3V output from regulator, < 50mA
- GND
- SCL (in): 3-5V, 10K pullup
- SDA (bidir): 3-5V, 10K pullup
- RST (in): reset on rising edge
- P0: n/c
- P1: n/c
- INT (out): interrupt on motion, 3V
- ADR (in): I2C address selection, 1=0x29, 0=0x28, 3V
RasPi Connection
- 3.3V: VIN
- GND: GND
- GPIO 2: SDA
- GPIO 3: SCL
- GPIO 5: DC

Battery and Charger

TBD

External antenna

TBD

Notes

Automatic Dependent Surveillance-Broadcast (ADS-B) Notes

1090MHz: Mode-A/C/S transponder
- additional information (i.e., "extended squitter" message) aka 1090ES
- aircraft flying above 18,000ft are required to have 1090ES
978MHz: Universal Access Transceiver (UAT)
- aircraft flying above 18,000ft can have either UAT or 1090ES
FLT ID: max of seven alphanumeric characters, same as id in ATC flight plan
- commonly associated with airline and flight number (e.g., AAL3342)
- for general aviation, its the aircraft's registration number
ICAO address: 24b unique address, programmed at installation (like a MAC address?)
in UAT Anonymous Mode, may not send ICAO address
Unique Id starting with '~' means non-ICAO address -- e.g., TIS-B data coming from ground station?

Interesting Events Captured So Far

statistics
- captured over four days
- 52601 samples
- 219 uniqueIds
Categories
- A[0-7]
- B[1,2,4,6,7]
- C[0-7]
- D[1,2,7]
Emergency/priority
- no communications (7600)
- lifeguard / medical emergency
Groundspeed
- min: 9.9 kt
- max: 571.4 kt
Baro altitude
- min: -925 ft
- max: 126700 ft
RSSI
- min: -20.3
- max: -2.0

Design Notes

use dump1090-fa to emit json files, generate console display using pygame
- modify code to not emit history files
- --quiet --metric --json-stats-every 0 --write-json
  - write to '/tmp/' on desktop
  - write to '/run/user/1000/' on Raspi bullseye
Display features:
- concentric rings indicating range (device is in the center)
- selectable range (between some min/max values that make sense)
- use NATO symbology? -- shape indicates type, vector indicates heading and speed, text for other values
- touch icon to get additional info pop-up
  - e.g., squawk, emergency, altitude, RSSI, roll, category, nav mode, seen, *_rate
- age tracks by dimming them -- larger 'seen' value, the dimmer the track
poll /aircraft.json for data
read /receiver.json at startup to get receiver info (e.g., selected update rate)
enable "track mode" where icon(s) leave slug trail behind?
use color to indicate something interesting
- e.g., emergency, special aircraft, really high/low/fast/slow/etc.
use gps receiver to get location of device?
use flux-gate magnetometer to get orientation?
- select north is always up, or have the display reflect the device's current orientation
use RasPi wifi to communicate with an external device (desktop, laptop, smartphone)
- stream raw data
- transfer history files
save history files (with long save intervals)
- enable offline analysis or replay of tracks
set alarms -- things to watch for
- e.g., specific planes, specific types of planes, specific metrics?
switch to making auto-ranging the default
- max range is always a power of two in Km
- start with default range
- after each polling cycle, determine max distance of all tracks, make max range be next higher power of two (in Km)
- allow switching off autoRange (i.e., keep current range) and switching back on
- turn off autoRange whenever range-up/down/reset/max command given
- use last range or default range when no tracks available
create different profiles for Handheld and Desktop uses -- do it all with config files
- put screen size and where to get assets into config (use different sized symbols based on screen size)

TODO

Figure out what kind of input device to use -- e.g., track point, touchscreen, shaft-encoder
- use touch panel -- figure out how to make it work on Ubuntu
Add UTC clock display (from GPS)
Add map overlays?
- get map rectangles from https://openstreetmap.org
  - export image as .png file with Export button
  - define bounding box with min/max lat/lon values
    - fixed size (e.g., 64km on a side) from given center point?
- load image with: myMap = plt.imread()
Change radar display if held vertically or horizontally?
Make sure all temp files are written to appropriate file system
come up with simple way of defining filters
indicate how many tracks are being filtered at any point in time?
add text table for additional information
- time (UTC) and location (lat/lon)
- summary of current tracks: (flight number, category, altitude, speed, distance)
- filtered tracks
- details of selected track: (?)
improve symbols
- create different sized ones for different displays
- use color and shape better
- rotate (or not) properly

egrep RSSI /tmp/fa.txt | cut -d ":" -f 2 | cut -d " " -f 2 | awk '{cnt += 1; sum += $1} END {print "Avg RSSI: " sum/cnt " dBFS"}'
- Avg RSSI: -10.8692 dBFS
- install and use gpsd
  - sudo apt-get update; sudo apt-get install gpsd gpsd-clients
  - disable gpsd
    - sudo systemctl stop gpsd.socket
    - sudo systemctl disable gpsd.socket
  - manually start daemon
    - sudo gpsd /dev/serial0 -F /var/run/gpsd.sock
  - keep it running?
    - sudo systemctl enable gpsd.socket
    - sudo systemctl start gpsd.socket
- run desktop client
  - sudo cgps -s
- gpsd installs python package
  - from gps import *
- can install adafruit-circuitpython-gps
  - import adafruit_gps --> running gpsd incurs a constant cpu load and so would rather just query on-demand
  - need to use library that works without gpsd
    - pip install adafruit-circuitpython-gps
    - pip install pynmeagps
    - from serial import Serial import adafruit_gps from pynmeagps import NMEAReader uart = Serial(port="/dev/ttyAMA0", baudrate=9600, timeout=30) gps = adafruit_gps.GPS(uart, debug=False) stream = Serial('/dev/ttyAMA0', baudrate=9600, timeout=3) nmr = NMEAReader(stream) (raw, parsed) = nmr.read()
GPS
- NMEA 0183 parsing
  - "$GPGGA,181908.00,3404.7041778,N,07044.3966270,W,4,13,1.00,495.144,M,29.200,M,0.10,0000*40"
    - $GPGGA: message with fix data *'GP' means GPS, 'GL' means GLONASS
    - MsgId:
      - VTG: Course over ground and ground speed
      - GSV: GPS Satellites in view
      - RMC: Recommended Minimum Specific GPS Data -- UTC time, status, latitude, longitude, speed over ground, date, magnetic variation of position
      - GSA: GPS DOP and Active Satellites
      - GGA: GPS Fix Data
        
        UTC of position fix in HHMMMSS.SS format
        
        Latitude in DD MM,MMMM format (0-7 decimal places)
        
        direction of latitude: 'N', 'S'
        
        Longitude in DD MM,MMMM format (0-7 decimal places)
        
        direction of longitude: 'E', 'W'
        
        GPS Quality indicator:
        
        0: invalid
        
        1: GPS fix
        
        2: DGPS fix
        
        3: ?
        
        4: real-time kinematic, fixed integers
        
        5: real-time kinematic, float integers
        
        Number of SVs in use: [00-12]
        
        HDOP
        
        Antenna height -- MSL reference
        
        "M": meters
        
        Geoidal separation
        
        "M" indicates the Geoidal separation is in meters
        
        Correction age of the GPS data record: Null when not using DGPS
        
        Base Station ID: [0000-1023]
      - RMC: Minimum GPS Data
        
        UTC of position fix in HHMMMSS.SS format
        
        Status: 'A'=valid, 'V'=invalid
        
        Latitude coordinate (0-7 decimal places)
        
        Latitude direction: 'N', 'S'
        
        Longitude coordinate (0-7 decimal places)
        
        Longitude direction: 'E', 'W'
        
        Speed over Ground in knots (0-3 decimal places)
        
        Track Made Good, True, in degrees
        
        Date in dd/mm/yy format
        
        Magnetic variation in degrees
  - looks like I receive as many RMC and GGA messages, so I'll use the GGA messages while True: _, p = nmr.read() if p.msgID == "GGA":
  - filter (lat,lon) samples (assuming not near poles/equator/where discontinuities occur)
    - look at set of samples
      - import matplotlib.pyplot as plt plt.scatter(x=lat,y=lon) avgLat = sum(lats)/len(lats) avgLon = sum(lons)/len(lons) plt.plot(avgLat, avgLon, marker="x") plt.show()
    - ????
IMU
- set up I2C for IMU
  - I2C HW: SCL=3, SDA=2
  - Raspi doesn't do I2C clock stretching properly so have to do something else
    - could switch and use the IMU in serial mode (with the second HW UART?)
  - replace i2c device with bit-banging driver (using same pins) via device tree overlay
    - sudo raspi-config
    - Interfaces->I2C -- disable ('')
    - sudo cp /boot/config.txt /boot/config.txt.orig
    - sudo ex /boot/config.txt
      - add: dtoverlay=i2c-gpio,bus=3,i2c_gpio_sda=02,i2c_gpio_scl=03
    - reboot and "ls -l /dev/i2c*" look for /dev/i2c-3
      - crw-rw---- 1 root i2c 89, 3 Dec 1 18:30 /dev/i2c-3
    - verify with: i2cdetect -y -r 3
      - should show BNO055 at address 28
  - alternatively use second HW UART and strap BNO055 to use serial (instead of I2C)
- sudo pip3 install Adafruit-Blinka import board import busio i2c = busio.I2C(board.SCL, board.SDA)
- sudo pip3 install adafruit-bno055
- from Adafruit_BNO055 import BNO055 bno = BNO055.BNO055(address=0x28, i2c="/dev/i2c-3", rst=5) if not bno.begin(): print("ERROR: failed to init")
- consider getting this: http://gps-pie.com/L80_slice.htm
Display
- edit /boot/config.txt and add to end of file:
  - 'sudo cp /boot/config.txt /boot/config.txt.orig' ** 'sudo ex /boot/config.txt' hdmi_group=2 hdmi_mode=87 hdmi_timings=480 0 40 10 80 800 0 13 3 32 0 0 0 60 0 32000000 dtoverlay=ads7846,cs=1,penirq=25,penirq_pull=2,speed=50000,keep_vref_on=0,swapxy=0,pmax=255,xohms=150,xmin=200,xmax=3900,ymin=200,ymax=3900 hdmi_drive=1 hdmi_force_hotplug=1
Waveshare 4" LCD
- XPT2046
- TFP401
- ADS7864
- issues:
  - Shutting off HDMI "flip_done timed out"
    - raspberrypi/linux#4962
  - Issue with XPT2046/ADS7846 touchscreen on RPi3
    - https://forums.raspberrypi.com/viewtopic.php?t=173993
      - /boot/config.txt
What works:
Try:
- install stuff
  - sudo apt-get update
  - sudo apt-get install xserver-xorg-input-evdev xinput-calibrator libts-bin evtest xinput
  - sudo pip install evdev
- /boot/config.txt
  - dtoverlay=ads7846,cs=1,penirq=25,penirq_pull=2,speed=50000,keep_vref_on=0,swapxy=0,pmax=255,xohms=150,xmin=200,xmax=3900,ymin=200,ymax=3900 or
  - dtoverlay=ads7846,penirq=25,speed=10000,penirq_pull=2,xohms=150 or
  - dtoverlay=ads7846,penirq=25,speed=10000,keep_vref_on=0,penirq_pull=2,xohms=150
- /etc/modules?
  - ads7846_device model=7846 cs=1 gpio_pendown=25 speed=1000000 keep_vref_on=1 swap_xy=1 pressure_max=255 x_plate_ohms=150 x_min=184 x_max=3869 y_min=141 y_max=3959
- ?
  - sudo cp -rf /usr/share/X11/xorg.conf.d/10-evdev.conf /usr/share/X11/xorg.conf.d/45-evdev.conf

dtparam=i2c_arm=on dtparam=spi=on dtoverlay=ads7846,penirq=25,speed=10000,penirq_pull=2,xohms=150 * /etc/modules ads7846_device model=7846 cs=1 gpio_pendown=25 speed=1000000 keep_vref_on=1 swap_xy=1 pressure_max=255 x_plate_ohms=150 x_min=184 x_max=3869 y_min=141 y_max=3959

dtparam=spi=on dtparam=i2c_arm=on hdmi_group=2 hdmi_mode=1 hdmi_mode=87 hdmi_cvt 480 800 60 6 0 0 0 display_rotate=3 dtoverlay=ads7846,penirq=25,speed=10000,keep_vref_on=0,penirq_pull=2,xohms=150

    * /etc/X11/xorg.conf.d/99-calibration.conf

Section "InputClass" Identifier "calibration" MatchProduct "ADS7846 Touchscreen" Option "MinX" "2778" Option "MaxX" "63781" Option "MinY" "3254" Option "MaxY" "62964" Option "SwapXY" "0" # unless it was already set to 1 Option "InvertX" "0" # unless it was already set Option "InvertY" "0" # unless it was already set EndSection

Section "InputClass" Identifier "calibration" MatchProduct "ADS7846 Touchscreen" Option "Calibration" "3853 170 288 3796" Option "SwapAxes" "1" EndSection

    * install evtest and run 'sudo evtest' to touch log for corner points

sudo apt-get update sudo apt-get install -y libts-bin evtest xinput python-dev python-pip sudo pip install evdev sudo apt-get install -y xinput-calibrator

    * install keyboard
      - 'sudo apt-get install -y xvkbd'
    * 'xinput list'
    * 'xinput list-props 6'
    * view logs written at boot-up: 'cat /var/log/Xorg.0.log'
    * 'sudo ex /usr/share/X11/xorg.conf.d/45-evdev.conf'

vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv

setup xinput-calibrator
- 'sudo apt-get install xserver-xorg-input-evdev xinput-calibrator'
- 'sudo cp -rf /usr/share/X11/xorg.conf.d/10-evdev.conf /usr/share/X11/xorg.conf.d/45-evdev.conf'
  - edit conf file:
    - 'sudo ex /usr/share/X11/xorg.conf.d/99-calibration.conf'
    - add to file: Section "InputClass" Identifier "calibration" MatchProduct "ADS7846 Touchscreen" Option "Calibration" "208 3905 288 3910" Option "SwapAxes" "0" Option "EmulateThirdButton" "1" Option "EmulateThirdButtonTimeout" "1000" Option "EmulateThirdButtonMoveThreshold" "300" EndSection ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
      sudo apt-get install xserver-xorg-input-evdev sudo cp -rf /usr/share/X11/xorg.conf.d/10-evdev.conf /usr/share/X11/xorg.conf.d/45-evdev.conf sudo reboot
LCD35-show git clone https://github.com/goodtft/LCD-show.git chmod -R 755 LCD-show cd LCD-show/ sudo ./LCD35-show

jduanen/pocket1090

pocket1090

Key Features

Handheld Device

Handheld Device Example Displays

Summary Mode

Details Mode

Info Mode

Interacting with the Application

SW

Raspberry Pi Zero 2W

4" HDMI IPS LCD with Resistive Touch Screen

RTL_SDR Receiver

GPS Receiver

9DoF IMU

dump1090-fa

pocket1090

systemd

HW

Enclosure

Raspberry Pi Zero 2W

LCD Display

RTLSDR USB Dongle

GPS Receiver

9DoF IMU

Battery and Charger

External antenna

Notes

Automatic Dependent Surveillance-Broadcast (ADS-B) Notes

Interesting Events Captured So Far

Design Notes

TODO

dtparam=i2c_arm=on dtparam=spi=on dtoverlay=ads7846,penirq=25,speed=10000,penirq_pull=2,xohms=150 * /etc/modules ads7846_device model=7846 cs=1 gpio_pendown=25 speed=1000000 keep_vref_on=1 swap_xy=1 pressure_max=255 x_plate_ohms=150 x_min=184 x_max=3869 y_min=141 y_max=3959

dtparam=spi=on dtparam=i2c_arm=on hdmi_group=2 hdmi_mode=1 hdmi_mode=87 hdmi_cvt 480 800 60 6 0 0 0 display_rotate=3 dtoverlay=ads7846,penirq=25,speed=10000,keep_vref_on=0,penirq_pull=2,xohms=150

Section "InputClass" Identifier "calibration" MatchProduct "ADS7846 Touchscreen" Option "Calibration" "3853 170 288 3796" Option "SwapAxes" "1" EndSection