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ハードウェア

※UART: Serial (TX, RX, GND)

非接触センサー

コントローラ：Raspberry pi pico
website：https://interactive-hand-sensor.com/root/

OLEDディスプレイ

コントローラ：arduino mega
website：https://www.sparkfun.com/products/15079

動作

非接触センサーの位置と値をuartで送信
OLEDディスプレイは受信した位置※の数値を表示
OLEDディスプレイの数値を一定時間後に消す
※位置は２箇所（０，１）だけ

ソフトウェア


非接触センサー(Raapberry_pi_pico)
from machine import PWM, UART
from Sensor_CLED import *

uart = UART(0, baudrate=57600, tx=Pin(16), rx=Pin(17))
def makePwm(gpio, freq, duty16):
    pwm = PWM(gpio)
    pwm.freq(freq)
    pwm.duty_u16(duty16)
makePwm(pwmCled_gpio, 50, 1<<15)    # set pwm 

def makeIndi():
    val = True
    def closure(dummy):
        nonlocal val
        CLed.setIndi(val)
        val = not val
    return closure
indi = makeIndi()
tim = Timer()
tim.init(freq=3, mode=Timer.PERIODIC, callback=indi)

def makeEla():
    val = True
    def closure():
        nonlocal val
        rev = val
        val = False
        return rev
    def setVal(dummy):
        nonlocal val
        val = True
    return closure, setVal
ela, elaSet = makeEla()         # elapsed time
tim1 = Timer()
tim1.init(freq=5, mode=Timer.PERIODIC, callback=elaSet)

def getUartLst(lst):
    CRI_UART = 18
    MAX_SIZE = 511
    ma = max(lst)
    if (ma < CRI_UART):
        return None
    idx = lst.index(ma)
    if ma > MAX_SIZE:           # ma:9bit
        ma = MAX_SIZE
    ch0 = 0x80 | ((idx) << 4)   # 1@@@ __$$ @:sel, $:b0(2bit)
    ch0 |= (ma >> 7)
    ch1 = ma & 0x7f             # 0&&& &&&& &:b1(7bit)
    # print(ma, hex(ch0), hex(ch1))
    return [ch0, ch1]

# ***************** main ********************
if __name__ == '__main__':
    cled = CLed()
    Sensor.init()                   # *** initialize Sensor ***
    print('******************* START ********************')
    cled.turnOn(5)
    time.sleep(1)
    cled.turnOn(0)
    while True:
        Sensor.setAd()
        #cled.turnOn()
        if ela():
            lst = Sensor.getAdLst()
            uLst = getUartLst(lst)
            if uLst is not None:
                uart.write(bytearray(uLst))


OLEDディスプレイ(arduino_mega)
#include <WiseChipHUD.h>
WiseChipHUD myHUD;
const int SHOW_MS = 100;
const int sw = 52;
// #include "Timer.h"
// Timer t;

void setup() {
  Serial.begin(57600); // opens serial port, sets data rate to 9600 bps
  Serial.println("hello");
  myHUD.begin();
  clearOLED();
  pinMode(sw, INPUT_PULLUP);
}

void display() {
  countUp();
  showAll();
  delay(2000);
  clearOLED();
}

byte sel, b0, b1;
// unsigned long lastChange;
void loop() {
  if(!digitalRead(sw)) {
    display();
    sel = 0xff;             // sel is not set
  }
  if (Serial.available()>0) {
    char chr = Serial.read();
    if (chr & 0x80) {       // 1@@@ __$$ @:sel, $:b0(2bit)
      sel = (chr >> 4) & 0x07;
      b0 = chr & 0x03;
    } else if(sel != 0xff){ // 0___ ____ b1(7bit)
      b1 = chr & 0x7f;
      oledOnOff();
    }
  }
  clearChk();
  // t.update();             // Must be called from 'loop
}

int get0_199() {
  // int a0 = ((b0 << 7) | b1);
  int rev = int(((b0 << 7) | b1) * 0.389) + 1;
  // int rev = int( int((b0 << 7) & b1) * 0.78 + 1); // 255->199(max)
  Serial.write(b0);
  Serial.write(b1);
  Serial.print(rev); 
  return rev;
}

const int STAMP_SIZE = 2;
unsigned long stamp[STAMP_SIZE] = {0};
void (*clearFP[STAMP_SIZE])() = {clear0, clear1};
void oledOnOff() {
  // Serial.write(sel);
  // Serial.write(b0);
  // Serial.write(b1);
  if (sel == 0) {
  //   /************************* Compass Group *************************/
    // myHUD.compassCircle(9); // 0 = All Off; 1-8 = All Off Except Selected; 9 = All On; 10-17 = All On Except Selected
    // myHUD.compassArrows(9); // 0 = All Off; 1-8 = All Off Except Selected; 9 = All On; 10-17 = All On Except Selected
    myHUD.setHeading(get0_199());  // Max 199
    stamp[0] = millis();
    // t.after(SHOW_MS, clear0, (void*)0);
  }
  if (sel == 1) {
  //   /************************* Radar Detector Group *************************/
    // myHUD.radarDetector(8); // 0 = No Radar Gun Icon; 1 = Radar Gun Only; 2-8 = Distance Meter
    // myHUD.radarDistanceUnits(1); // 0 = Blank; 1 = "m" 
    myHUD.setRadarDistance(get0_199(),0); // Max 999
    stamp[1] = millis();
    // t.after(SHOW_MS, clear1, (void*)0);
  }
}

void clearChk() {
  unsigned long nowTime = millis();
  for (int i=0; i<STAMP_SIZE; i++) {
    if (nowTime - stamp[i] > SHOW_MS)
      (*clearFP[i])();
  }
}

void clearOLED() {
  myHUD.clearAll(); // Clears all of the segments
}

void clear0() {
    // myHUD.compassCircle(0); // 0 = All Off; 1-8 = All Off Except Selected; 9 = All On; 10-17 = All On Except Selected
    // myHUD.compassArrows(0); // 0 = All Off; 1-8 = All Off Except Selected; 9 = All On; 10-17 = All On Except Selected
    // myHUD.setHeading(0);  // Max 199
    del_oled(0, 50);
}

void clear1() {
    // myHUD.radarDetector(0); // 0 = No Radar Gun Icon; 1 = Radar Gun Only; 2-8 = Distance Meter
    // myHUD.setRadarDistance(0,0); // Max 999    
    // myHUD.radarDistanceUnits(0); // 0 = Blank; 1 = "m" 
    del_oled(50,90);
}

void del_oled(uint16_t i0, uint16_t i1) {
  for(uint16_t i = i0; i<i1; i++){
    myHUD.AdjustIconLevel(i, 0x00);
  }
}

void showAll() {
    /************************* Compass Group *************************/
    myHUD.compassCircle(9); // 0 = All Off; 1-8 = All Off Except Selected; 9 = All On; 10-17 = All On Except Selected
    myHUD.compassArrows(9); // 0 = All Off; 1-8 = All Off Except Selected; 9 = All On; 10-17 = All On Except Selected
    myHUD.setHeading(199);  // Max 199

    /************************* Radar Detector Group *************************/
    myHUD.radarDetector(8); // 0 = No Radar Gun Icon; 1 = Radar Gun Only; 2-8 = Distance Meter
    myHUD.setRadarDistance(999,0); // Max 999    
    myHUD.radarDistanceUnits(1); // 0 = Blank; 1 = "m" 

    /************************* Exit Group *************************/
    myHUD.leftTunnel(1); // 0 = Blank; 1 = Tunnel; Also try leftRoad();
    myHUD.middleTunnel(1); // 0 = Blank; 1 = Tunnel; Also try middleRoad();
    myHUD.rightTunnel(1); // 0 = Blank; 1 = Tunnel; Also try rightRoad();

  /************************* Navigation Group *************************/
    myHUD.nav_Group(1); // 0 = Entire Nav Group Off; 1 = Entire Nav Group On
    myHUD.setTurnDistance(999,1); // Max 999
    myHUD.turnDistanceUnits(2); // 0 = Blank; 1 = "m"; 2 = "km"
 
    /************************* Call Group *************************/
    myHUD.setCallIcon(3); // 0 = Blank; 1 = Outline; 2 = Outline + Phone Icon; 3 = All Segments

    /************************* TPMS Group *************************/
    myHUD.tirePressureAlert(3); // 0 = Blank; 1 = "TPMS"; 2 = "TIRE"; 3 = All Segments
    myHUD.setTirePressure(99,1); // Max 99
 
    /************************* Speedometer Group *************************/
    myHUD.setSpeedometer(199); // Max 199
    myHUD.speedometerUnits(1); // 0 = Blank; 1 = "km/h"

    myHUD.setDestinationDistance(999,2); // Max 999
}

void countUp() {
  for(int i = 0; i < 200; i += 5){
    myHUD.setHeading(i);  // Max 199
    if (i > 33 * 1)
      myHUD.setRadarDistance(i,0); // Max 999
    if (i > 33 * 2)
      myHUD.setDestinationDistance(i,2); // Max 999
    if (i > 33 * 3)
      myHUD.setTurnDistance(i,1); // Max 999
    if (i > 33 * 4)
      myHUD.setTirePressure(i-33 * 4,1); // Max 99
    if (i > 33 * 5)
      myHUD.setSpeedometer(i); // Max 199
    delay(80);
  }
  delay(500);
  clearOLED();
}

終わりに

OLEDディスプレイを通すと赤外線が減衰しセンサーの出力は１／３くらいになりますが検出できました。このディスプレイは車用のブレークアウトボードですがグラフィカルなディスプレイだともっと面白いと思いました。

子供たちのための未来志向開発をテーマにオリジナルの非接触スイッチや非接触制御という新しい分野を研究しています。
テクノロジーはwebsiteから公開しています。

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