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hi, wanted to use this module again,
used this code on the green Espruino

    I2C1.setup({ scl : B6, sda: B7} );
    var ads = require("ADS1X15").connect(I2C1); // <--- this now pulls everything from the internet
    ads.setGain(4096); // +/- 0.256mV
    ads.getADC(0, function(val) {
      console.log("Reading: "+val);
    });

    function everySecond() {
     ads.getADC(0, function(val0) {
      ads.getADC(1, function(val1) {
       ads.getADC(2, function(val2) {
        ads.getADC(3, function(val3) {
         console.log(val0,val1,val2,val3);
        });
       });
      });
     });
    }
    setInterval(everySecond, 1000);

and got this error

in function called from system
Uncaught Error: Invalid differential channelSpec 0
 at line 1 col 157
...ifferential channelSpec "+a);c|=e}c|=d[this.gain];this.write...
                              ^
in function "getADC" called from line 10 col 7
     });
      ^

before it was working well
is something wrong with the code? or module from "require function"?

did it already, forgot to post it, it works ;) tnx

if found this for map function in arudino

long map(long x, long in_min, long in_max, long out_min, long out_max)
{
  return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
}

anyone could change it into espruino?

when I checked the voltage espruino return now I've got 0.88volt when start and sensor is warmed, and 0.72volt when I blow on it

var co2 = analogRead(A5)*3.3;

when used this code

var co2=1-analogRead(pin);
var ppm=400+co2*(10000-400)

I've got readings at about 7400ppm, I fixed it but just for 400ppm level

var co2 = 1 - analogRead(A5);
 var ppm = 400 + co2*(10000-400);
  console.log(co2);
  console.log(ppm*0.054163846);

can't get readings of about 10000ppm when voltage on the sensor is 0.72volt

no problem, I want to use it to monitor CO2 retention during diving

Tnx DrAzzy, it looks like Dout is like you said, some kind of alarm pin (HIGH/LOW), Aout giving value from 0-2volts (that is from the auction description) but I measured that when I power it by 6V high efficient power supply then have something like 1.07volt at the beginning and when I blew on the sensor got minimum of 0.73volt (however it depends what level of gain you use, there is small potentiometer - but it's not changing it from 0 to 2 volts as I seen)
so, 0.73-1.07volt in my case should be 'map' to 400-10000ppm

Hi, anyone could help to run measurements from this sensor run on Espruino?
there is only few arduino codes I found, but they are made for different module I have,
pinout are not the same.
My module is one of this http://www.aliexpress.com/store/product/­1PCS-X-New-CO2-sensor-module-MG811-modul­e-free-shipping/437150_1374147854.html
Found somewhere in the web that it is equipped into op amp to.
There is 5 pins: Vcc,Aout,Dout,GND and Tcm.
I think Aout is analog output, Dout digitalone? and not sure about Tcm,
there is two potentiometers for TTL signal adjustments and signal amplification.
Module needs 6V for heating and after while should give correct readings.
I get some value on analogRead but first they are inverted, so when blow into the sensor reading decrease and when stop readings rise to the start level. So can't map it like in arduino style way eg.

float co2 = analogRead(A0);
float ppm = map(co2,0,1023,400,10000);

and get readings like when blow ppm rise, when stop ppm drop

sensor measure CO2 concentration from 400ppm to 10000ppm - like datasheet said
in this range it will change voltage output at very small range (30mV)

would like to run it on Espruiono, if anyone could help I can provide links about this module I found till this time

Yes it could, I used some terminals as minicom and picocom, but I was worried I burned it as connected also NRF module and swap by mistake Vcc with GND, but fortunately pico is a live ;)

now it was connected into WebIDE but got info that WebIDE can't find a stm32 bootloader, but pico is in bootloader mode, it is pulsing LED's,

after while It was possible to flash the firmware, pico can connect into WebIDE but I can't write anything in console, I have also Esprino board (green one) and it is working in all of that terminals,

dont' know what was wrong, but after plenty of times and few flash firmware operations It came back to live ;)

hi don't know what happened, I see my pico com /dev/ttyACM0 but can't connect into it by WebIDE, picocom and minicom, what can be wrong?

hi, still fighting with it ;) could you tell me how to change font size ;)

ok, I've got it, it was in the graphic library, g.setFontVector(..);
every day I see more and more how easy Espruino is ;)

thank you, I'll test it

how to use this in some simple example with LED function?
i mean let say when 1 short press (SS) is detected then turn on LED1, when LL turn off etc.?

Thanks Gordon, I'll check it later on today, will try to use it under SSD1306, hope I can manage

I Wonder how to make simple menu for LCD or OLED ssd1306, I know how to create it in arduino programming style using switch case function, are here any samples about that?

hi, what should I type to upload espruino to maple mini like user51876?
something like that?

python maplemini.py -p /dev/ttyUSB0 -evw espruino_1v80_olimexino_stm32.bin 

maplemini.py should be instead of stm32loader.py?

Hi, I wonder about digole displays and this library for espruino http://www.espruino.com/Digole
how about those displays
http://www.digole.com/index.php?productI­D=859
http://www.digole.com/index.php?productI­D=1194
http://www.digole.com/index.php?productI­D=1205
should they work whit this code?

I've got it ;)

Gordon do you know how to get those ads 4 channels values print on HD44780?
your console.log construction is working in the console but didn't figure out yet
how to print those values there, it looks like it should be a different way than
analogRead values?

I figured out ;)
need to delete lcd.clear() line and now only values are changing not all signs

this is how it looks on maple board
https://drive.google.com/open?id=0BzvGs-­oFJWtTTUZSRVdZMk16b28
and here on the arduino uno - sorry LQ
https://drive.google.com/open?id=0BzvGs-­oFJWtTakxBWVZRUko3Y0k

thank you for a lot of your work Gordon, now it would be much much easier for others ;)

Do you know how to set print or console.log function to show float value like from analogRead but only to show 3 places after .dot ? eg. (1.234V)

thank you Gordon, it is working ;) play with Espruino is much easier than C and PIC modules I see ;)
could you show me some simple construction about callback?

it is working but display is doing little flash when changing values
i used this example

function showData() {
 lcd.clear();
 lcd.setCursor(0,0);
 lcd.print("Current data:");
 lcd.setCursor(4,1);
 lcd.print("D1 = "+analogRead(D1));
}
setInterval(showData, 1000);

I think it should only flash in section where the D1 value is, not all display?

code works ;)
it return one value, but only once, when I upload the code by Web IDE
do you know which function will let me to print values from one of 4 channels in which ADS1115 is equipped?
and how to use gain settings like it is in arduino library for this module?