njord/lasertag_remote_control
1
1
Fork 0
Code Issues Pull Requests 1 Projects Releases 1 Wiki Activity
OpenLaserTag, MILES TAG 2, Micropython, Raspberry Pi Pico W
98 Commits 2 Branches 1 Tag 637 KiB
Python 100%
f2de891ea3
Go to file
njord f2de891ea3 Make IR real-time/non-blocking, harden for Pico W, optimize 
Primary target is now the Pico W; functionality preserved on other boards.

IR TX (RP2040/PWM): rewritten to a non-blocking, real-time symbol state
machine. A hardware-PWM 56 kHz/40% carrier is gated by a one-shot k_timer
(mark/space flips in the timer ISR), so TX never busy-waits and runs
concurrently with IR RX, BLE and everything else. Queued frames (BLE "bomb")
are sent back-to-back with a 50 ms inter-frame gap. Boards whose ir-tx is a
plain GPIO keep the (blocking) software bit-bang carrier as a fallback.

IR RX: cycle timestamps captured in the ISR, converted to us off the
interrupt path in the decode work item (lower ISR jitter).

Fixes:
- Heartbeat moved off GPIO25 (CYW43 WL_CS on Pico W) to GPIO14 to avoid
  corrupting WiFi/BLE.
- APP_BLE now selects BT_DEVICE_NAME_DYNAMIC (bt_set_name needs it).

Optimizations:
- RGB rewritten with integer math (no soft-float on the FPU-less M0+).
- CONFIG_SIZE_OPTIMIZATIONS; 100 us tick so OLT symbol durations schedule
  exactly.

Pico W: boards/rpi_pico_rp2040_w.conf enables BLE out of the box.

Docs: resolved hardware TODOs (battery cell-count divider, PWM channel math,
heartbeat, carrier), README primary target = Pico W, inline comments.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-19 16:44:39 +02:00
.claude Add Zephyr RTOS port of OpenLaserTag remote control 2026-06-19 15:38:26 +02:00
.vscode fix debug 2024-05-28 17:19:12 +02:00
docs Make IR real-time/non-blocking, harden for Pico W, optimize 2026-06-19 16:44:39 +02:00
lib version 1.0 relase 2024-06-22 01:13:41 +02:00
zephyr_app Make IR real-time/non-blocking, harden for Pico W, optimize 2026-06-19 16:44:39 +02:00
.gitignore Add Zephyr RTOS port of OpenLaserTag remote control 2026-06-19 15:38:26 +02:00
.micropico add micropico 2024-05-13 22:02:47 +02:00
CLAUDE.md Add Zephyr RTOS port of OpenLaserTag remote control 2026-06-19 15:38:26 +02:00
main.py versio 1.0 release update 2024-06-22 01:19:05 +02:00
migration-prompt.md Add Zephyr RTOS port of OpenLaserTag remote control 2026-06-19 15:38:26 +02:00
README.md Update 'README.md' 2024-06-22 00:22:02 +01:00

README.md

lasertag_remote_control

OpenLaserTag device, MicroPython

Raspberry Pi Pico W

MicroPython FW: https://micropython.org/download/RPI_PICO_W/

Pi Pico W datasheet https://datasheets.raspberrypi.com/picow/pico-w-datasheet.pdf

PCB 51x21mm, 1mm hole 20x8(10) 2.54 pitch grid

Pi Pico BLE: https://electrocredible.com/raspberry-pi-pico-w-bluetooth-ble-micropython/

Micropython IR: https://github.com/peterhinch/micropython_ir/blob/master/RECEIVER.md

Pi Pico VSCode: https://randomnerdtutorials.com/raspberry-pi-pico-vs-code-micropython/

STM32WB

MicroPython FW: https://micropython.org/download/?mcu=stm32wb

BLE Bluetooth UART - terminal

https://play.google.com/store/apps/details?id=de.kai_morich.serial_bluetooth_terminal

install OpenLaserTag on Pi Pico W

install primitives lib

$ mpremote mip install "github:peterhinch/micropython-async/v3/primitives"

install lib folder on device

$ mpremote connect /dev/ttyACM0 cp -r ./lib :

install main.py

$ mpremote connect /dev/ttyACM0 cp ./main.py :

OpenLaserTag remote box

Box Z62, 2xAA:

https://www.kradex.com.pl/product/enclosures_with_battery_basket/z62

https://www.krabicky-pro-elektroniku.cz/plastova-krabicka-z62--cerna/

BLE Bluetooth UART - terminal

https://play.google.com/store/apps/details?id=de.kai_morich.serial_bluetooth_terminal

Pi Pico

IR RX

IR RX TSOP4856
datasheet: https://www.vishay.com/docs/82459/tsop48.pdf

  • pin1 OUT - Pi Pico pin 16 (pull up)
  • pin2 VCC
  • pin3 GND

IR TX

  • IR TX TSAL6200 / TSAL6100
  • PN2222A NPN transistor
  • resistor 47R

Pi Pico pin:

  • pin 16 - IR RX
  • pin 17 - IR TX - 22R - IR LED OSRAM SFH4544
  • pin 18 - button
  • pin 19 - button
  • pin 20 - button
  • pin 22 - Red LED, resistor 75R
  • pin 28 - 2xAA 1,5V BAT - Schottky diode - VSYS Pi Pico
  • pin 15 - PN2222A NPN transistor - Piezo

BLE UART Serial Terminal

Show IR RX recived commands

Send IR Commands from terminal

  • led_off LED OFF
  • led_on LED ON
  • bomb Send Explode command over IR TX
  • Any Lasertag command in hex FFFFFF or 0xFFFFFF send this command over IR TX