Search results for:

i get the same numbers even without anything connected :(

Apologies for being the (relative) moron here :), quite a learning curve..

I am looking at the datasheet, not spotting clues.
https://ae-bst.resource.bosch.com/media/_tech/media/datasheets/BST-BMP280-DS001-18.pdf

could it be reading from the wrong address still?

i am using a Puck.js
That definitely did the trick, great! Guess I will have to read up on why.

So I don't need to do the pinMode lines?

I am getting a reading, but somehow they don't change. I have had a sensor with a similar chip before and they normally are very sensitive. Am I missing something?

var i2c = new I2C();
i2c.setup({scl:D2,sda:D1});
var bme = require("BMP280").connect(i2c);
console.log(bme.getData());

setInterval("console.log(bme.getData())",1000);

 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v93 Copyright 2016 G.Williams
>{ "temp": -0.00000017881, "pressure": 0.01541300212 }
=undefined
{ "temp": -0.00000017881, "pressure": 0.01541300212 }
{ "temp": -0.00000017881, "pressure": 0.01541300212 }
{ "temp": -0.00000017881, "pressure": 0.01541300212 }
{ "temp": -0.00000017881, "pressure": 0.01541300212 }
{ "temp": -0.00000017881, "pressure": 0.01541300212 }
{ "temp": -0.00000017881, "pressure": 0.01541300212 }
{ "temp": -0.00000017881, "pressure": 0.01541300212 }
{ "temp": 0.00312499999, "pressure": 500.01877148359 }
{ "temp": -0.00000017881, "pressure": 0.01541300212 }
{ "temp": -0.00000017881, "pressure": 0.01541300212 }
{ "temp": -0.00000017881, "pressure": 0.01541300212 }
{ "temp": 0.00312499999, "pressure": 500.01877148359 }
{ "temp": 0.00312499999, "pressure": 500.01877148359 }
{ "temp": 0.00312499999, "pressure": 500.01877148359 }
{ "temp": 0.00312499999, "pressure": 500.01877148359 }
{ "temp": 0.00312499999, "pressure": 500.01877148359 }
{ "temp": -0.00000017881, "pressure": 0.01541300212 }
{ "temp": -0.00000017881, "pressure": 0.01541300212 }
{ "temp": -0.00000017881, "pressure": 0.01541300212 }
{ "temp": -0.00000017881, "pressure": 0.01541300212 }
{ "temp": -0.00000017881, "pressure": 0.01541300212 }
{ "temp": -0.00000017881, "pressure": 0.01541300212 }
{ "temp": -0.00000017881, "pressure": 0.01541300212 }
{ "temp": -0.00000017881, "pressure": 0.01541300212 }
>reset();
=undefined

unfortunately, it still doesn't want to play ball...

The espruino BMP280 page has this configuration:

Device Pin Espruino
1 (GND) GND
8 (VCore) 3.3
3 (SDI) B9(I2C1 SDA)
4 (SCK) B8(I2C1 SCL)
2(CSB) 3.3
5(SDO) GND
6(Vio) 3.3

I have SDA on D1 and SCL on D2
I have SBO on D28 and CSB on D29

Then in the code I put D28 to GND and D29 to 3.3v
The I2C pins need to be pulled up, not sure if I am doing that correctly.

The code on the BMP280 page requires the BME280 module, I changed that into BMP280, assuming that is a mistake.

digitalWrite(D28,0);
digitalWrite(D29,1);

pinMode(D1, "input_pullup");
pinMode(D2, "input_pullup");

I2C1.setup({scl:D2,sda:D1});
var bme = require("BMP280").connect(I2C1);
console.log(bme.getData());

When running I get this error, not being able to write to the address..

> >
 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v93 Copyright 2016 G.Williams
>Uncaught InternalError: I2C Write Error 33281
 at line 1 col 20
a.writeTo(118,[b,e])
                   ^
in function "write" called from line 1 col 43
...s.write=c;this.write(244,39);this.write(245,160);this.readCo...
                              ^
in function "f" called from line 1 col 101
...(b,e){a.writeTo(118,[b,e])})
                              ^
in function "connect" called from line 1 col 41
var bme = require("BMP280").connect(I2C1);
                                        ^
Uncaught Error: Field or method "getData" does not already exist, and can't create it on undefined
 at line 1 col 16
console.log(bme.getData());
               ^
=undefined
> 

only just found the BMP280 module :)
https://www.espruino.com/BMP280#line=3,3,7,7,11,11

If only I could delete a whole conversation...

Conecting it like this..

with SDO to ground for the default address 0x76, CSB to 3v so I2C gets selected..

Still same error message

Saw the datasheet, thanks. I tried all possible variations connecting the SDO to either Vcc or ground, no change in the error message so far.

Some people are saying that for the BMP280 compared to the BMP180/085, the I2C ADDRESS changed from 0x77 to 0x76.

a forum post:
https://github.com/adafruit/Adafruit_BME280_Library/issues/15

But I changed all the 0x77 in the BMP085.js to 0x76, but no change, same error except the 119 becomes 118;

Uncaught InternalError: I2C Write Error 33281
at line 1 col 23
this.i2c.writeTo(119,a),this.i2c.readFrom(119,1)[0];

First of all, I am assuming the BMP280 can work with the module BMP085, just like the BMP180 did..?

Here is how I connected it, D1 and D2, GND and 3V

I am trying to use the code from this page:
https://www.espruino.com/BMP085

I2C1.setup({scl:D2,sda:D1});
var bmp = require("BMP085").connect(I2C1);
setInterval(function() {
  bmp.getPressure(function(d) {
    console.log("Pressure: " + d.pressure + " Pa");
    console.log("Temperature: " + d.temperature + " C");
  });
}, 1000);

The console gives me a range of errors though.

I am using the standalone IDE, judging by the load time it gets the module from the 'require' statement just fine. I also put the module in the module directory, no difference.

Any idea what I am doing wrong? Thanks..

Here is the console output:

 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v93 Copyright 2016 G.Williams
>Uncaught InternalError: I2C Write Error 33281
 at line 1 col 23
this.i2c.writeTo(119,a),this.i2c.readFrom(119,1)[0];
                      ^
in function "read8" called from line 1 col 99
...oss=3);var b=this.read8(208);if(b!=85)return console.log('Ba...
                              ^
in function "BMP085" called from line 1 col 15
new BMP085(a,b);
              ^
in function "connect" called from line 1 col 41
var bmp = require("BMP085").connect(I2C1);
                                        ^
=undefined
Uncaught Error: Field or method "getPressure" does not already exist, and can't create it on undefined
 at line 1 col 4
bmp.getPressure(function(d) {
   ^
in function called from system
Uncaught Error: Field or method "getPressure" does not already exist, and can't create it on undefined
 at line 1 col 4
bmp.getPressure(function(d) {
   ^
in function called from system
Uncaught Error: Field or method "getPressure" does not already exist, and can't create it on undefined
 at line 1 col 4
bmp.getPressure(function(d) {
   ^
in function called from system
Uncaught Error: Field or method "getPressure" does not already exist, and can't create it on undefined
 at line 1 col 4
bmp.getPressure(function(d) {
   ^

ok, will take some time to try this.

What a brilliant thing it is, best toy ever :)

would be happy to get another one if needed though.. if you know a more suitable one

http://www.ebay.co.uk/itm/SIM800L-V2-0-5V-Wireless-Quad-Band-GSM-GPRS-Module-SMA-Antenna-UK-Seller-New-/201496725359

still waiting for my sim800L, just not seeing a power on the board, not all models seem to have that.

-

maybe an AT command for turning on/off the cellular radio would have the same effect as far as power consumption is concerned, do you know if such an AT command exists?

Mind you my thinking isn't hindered by practical experience... AT commands maybe deal with just the network, not the inner workings of the module itself

that is what i was thinking, then it uses zero. And for sending an sms, just turn it on first :)

Thanks again

But shouldn't it be able to simply connect and disconnect the whole module like you would normally. And then turn it on when you need it? Would it always need a physical press of a button to get going? Must be some kind of hack to achieve that...

Will try to work with it, thanks!

Did you come across a serial command to power the GSM on and off, for a sim800?

Just sending some sensor values by sms would be great. Possible receiving an sms with instructions for turning sensors on or off could be a next step.

doesn't seem to be anybody home :(

Would you know where the latest version of the library would be, at the end of the post I guess? Also, was it very specific to the GSM2 Click or should I expect it to work on a SIM800 as well?

I need a worldwide working gsm for sending sms reliably..

Thanks

Were you thinking of making a library for sending SMS? What would be the advantage/difference of having a library for it?

Noob question, I know...

That would be amazing. Sadly my programming isn't that good so I rely on copy and pasting examples or a more novice friendly library. But I will try to get it to work.

The gsm would have its own lipo obviously. But I would still like to be able to turn it on just for sending an sms, and then turn off

I would like to use a static puck to inform me of the whereabouts and status of another moving puck by sms. That should be possible with the Adafruit FONA or GSM800 GSM module right?

Serial port should be able to control that right? Just wonder if the puck could also turn on the GSM so it isnt on all the time losing battery...

Would be great..