Let's Control It

Shardan wrote: ↑14 Aug 2017, 12:45 I'm using state mode with a HC_SR04
just for light switching in the basement.
It's far mor precise as PIR's

LisaM wrote: ↑14 Aug 2017, 13:34

Shardan wrote: ↑14 Aug 2017, 12:45 I'm using state mode with a HC_SR04
just for light switching in the basement.
It's far mor precise as PIR's

Did you try the new microwave radar (RCWL-0516) yet?

LisaM wrote: ↑14 Aug 2017, 16:58 I've ordered some and are considering using it at ground floor directed downwards. That should eliminate the triggers from the next room.
I'm done rewriting it, test phase is next...

papperone wrote: ↑14 Aug 2017, 17:29

LisaM wrote: ↑14 Aug 2017, 16:58 I've ordered some and are considering using it at ground floor directed downwards. That should eliminate the triggers from the next room.
I'm done rewriting it, test phase is next...

Please let me know as per my test the micrwave irradiates from the modules in all directions no matter how I position it
I know there are similar modules with different chipset and some kind of shielding on one side of the board in order to "cut" waves to goin that direction (so they cover only 180°)

Shardan wrote: ↑14 Aug 2017, 19:49 Definitely. These sensors are omnidirectional.
I can make it work if i go to a wall made from ferroconcrete.
Anyways it should be possible to shield the antenna if you cover two or three sides
of a case with aluminium foil for example. But don't put the foil too near to the module,
keep some centimeters distance. Maybe use a plastic case, mount the module at the mid of the lid and cover bottom and sides for shielding...
I didn't test that yet.

Regards
Shardan

LisaM wrote: ↑15 Aug 2017, 13:39

Shardan wrote: ↑14 Aug 2017, 19:49 Definitely. These sensors are omnidirectional.
I can make it work if i go to a wall made from ferroconcrete.
Anyways it should be possible to shield the antenna if you cover two or three sides
of a case with aluminium foil for example. But don't put the foil too near to the module,
keep some centimeters distance. Maybe use a plastic case, mount the module at the mid of the lid and cover bottom and sides for shielding...
I didn't test that yet.

Regards
Shardan

How about using the same kind of shielding/focus as on a HC-SR04? Some kind of a thin metal tube glued over the sensor...

LisaM wrote: ↑13 Aug 2017, 23:26 Please let me know if anyone is using the STATE mode, state mode means that the distance is below the threshold set in the form earlier. When state mode is reached, distance below threshold, then a sensor switch event is send.

If nobody is using it, i can as well take it out...

toffel969 wrote: ↑15 Aug 2017, 21:58 Would it be possible to include median function of the New ping lib?(optional with parameter on device page). It can be done using a dummy device and rules, however it can b very handy when using t distance sensor a water level sensor.
Regards seb

Shardan wrote: ↑18 Aug 2017, 18:39 I'll test as soon as i have some spare time.... might take a while.

Regards
Shardan

Shardan wrote: ↑24 Aug 2017, 22:00 Quick breadboard setup, tested with the last Github version.
Distance - works
Threshhold - works
Free mem - 21624 constant.

Looks good so far. Can't test the JSN-SR04T, i don't have one yet.

Regards
Shardan

Shardan wrote: ↑25 Aug 2017, 10:28 Anytime

I'll let the breadboard run for a while and look if memory changes or such,
maybe combine it with a BME280 or such to see if anything interferes.

Regards
Shardan

rol-rider wrote: ↑05 Sep 2017, 01:32 Hello,
I tested both sensors.
the hc-SR04 ------- distance = 180cm - ok ---- distance <to 20cm --- ok
the JSN-SR04T --- distance = 180cm - ok --- distance <to 20cm --- NOK

the JSN-SR04T looks less good for distances <20cm

excuse me for English .... google translate

Electrical parameters: JSN-SR04T

Working voltage: DC 3.0-5.5V
Working current: <8mA
Acoustic emission frequency: 40khz
Farthest distance: 600cm
Nearest distance: 20cm
Distance accuracy: ±1cm
Module size: 42mm*29mm*12mm
Resolution: about 1mm
Angle: 75 degrees
Working temperature: -20℃—+70℃

//#######################################################################################################
//#################################### Plugin 013: Ultrasonic Sensors ###################################
//################ models: HC-SR04, SRF05, SRF06, DYP-ME007, JSN-SR04T & Parallax PING ##################
//#######################################################################################################

//#######################################################################################################
//#################################### Plugin 013: HC-SR04 ##############################################
//#######################################################################################################

Shardan wrote: ↑28 Jan 2018, 14:10 That's an interesting question.

I've been testing that plugin for a while, it worked nicely for me.

JojoS wrote: ↑04 Oct 2018, 15:18 Hi,
there is an update for the US plugin. I have fixed some errors, now multiple sensors are possible. The plugin supports the median filter from the NewPing class, output as cm or inch (although this was possible with a formula expression already). I have changed also the calculation from integer to float so that you will see fractions of cm or inches.
For better troubleshooting, some more detailed errors will be shown in the log.

TD-er wrote: ↑10 Apr 2020, 19:21 This datasheet (https://www.makerguides.com/wp-content/ ... asheet.pdf ) does mention a resistor on R27 to switch between different modi.

Open = similar behavior to the well known other Ultrasonic sensors
47k = switch to serial mode continuously sending distance in mm
120k = serial mode starting in stand-by and you have to wake it.

TD-er wrote: ↑10 Apr 2020, 19:38 How is the board powered?
Can you measure the voltage you supply to the sensor?
Maybe switch to 5V for powering the sensor and then add a small voltage divider to make sure the output of the signal pin is not over 3v3?

Maybe the GPIO connected to the trigger pin should have its pull-up resistor enabled?

#define ECHOPIN 5// Pin to receive echo pulse
#define TRIGPIN 4// Pin to send trigger pulse
void setup(){
  Serial.begin(9600);
  pinMode(ECHOPIN, INPUT_PULLUP);
  pinMode(TRIGPIN, OUTPUT);
  
  digitalWrite(ECHOPIN, HIGH);
}
void loop(){
  digitalWrite(TRIGPIN, LOW); // Set the trigger pin to low for 2uS
  delayMicroseconds(2);
  digitalWrite(TRIGPIN, HIGH); // Send a 10uS high to trigger ranging
  delayMicroseconds(15);
  digitalWrite(TRIGPIN, LOW); // Send pin low again
  int distance = pulseIn(ECHOPIN, HIGH,26000); // Read in times pulse
  distance= distance/58;
  Serial.print(distance);
  Serial.println("   cm");                  
  delay(50);// Wait 50mS before next ranging
}

TD-er wrote: ↑10 Apr 2020, 21:47 Maybe the trigger you try to send does not have the right voltage level?
Have you tried using a PNP transistor to increase the output level?