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const wheelEvt = document.createEvent('MouseEvents');
wheelEvt.initEvent('wheel', true, true);

// Set deltaY depending on wheel up or wheel down
wheelEvt.deltaY = +120; 
// wheelEvt.deltaY = -120;

// Pass event to element
element.dispatchEvent(wheelEvt);

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//compiled gcc fonttest.c -o fonttest -lfontconfig
//Sample output: /usr/share/fonts/steam-fonts/arial.ttf
#include <stdio.h>
#include <stdlib.h>
#include <fontconfig/fontconfig.h>
int main()
{
	FcConfig* config = FcInitLoadConfigAndFonts();
	//make pattern from font name
	FcPattern* pat = FcNameParse((const FcChar8*)"Arial");

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#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <asm/termbits.h>
#include <fcntl.h>
#include <sys/ioctl.h>

int serial_arbitrary_baudrate(int fd, int baudrate)

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#define DEFAULT_OUTPUT_PWM_FRAME_RATE 1000
#define DEFAULT_ATTITUDE 120.0

/*
    will listen for UDP packets:

        9001 - Betaflight's PwmOut UDP link to RF9
        9002 - Betaflight's PwmOut UDP link to gazebo

    will send

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From d53ba04c85c85c81dc8bdeec38bcfb8f41ebb471 Mon Sep 17 00:00:00 2001
From: Maksym Veremeyenko <maks.verem@gmail.com>
Date: Wed, 10 Dec 2025 17:09:41 +0200
Subject: [PATCH 1/6] Impelement real serial support for SITL.

---
 src/main/drivers/serial_sitl.c | 504 +++++++++++++++++++++++++++++++++
 src/main/drivers/serial_sitl.h |   5 +
 src/main/io/serial.c           |   8 +
 src/main/main.c                |  11 +

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sim_duration = 20;            # simulation duration, seconds
sim_freq = 150;               # simulation step frequency
target_position_A = 1200;     # initial positoin of target, DILEC
target_position_B = 5700;     # initial positoin of target, DILEC
head_position_current = 4000; # initial head position, DILEC
head_speed_current = 0;

PARAM_K_SPEED = 170 / 1000;
INTEGRATOR_SPEED = (1.0 / 0.016); # 16 [mV]  = 1 [dc / s]
output_voltage_MIN = -10;