calebbrewer

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• I2C Display - Write Error 33281

  @calebbrewer started

  • 10 comments
  • 440 views

  @Gordon replied
• I2C Display - Write Error 33281

  in Interfacing • 1 month, 1 week

  

  Right. What I meant was that I thought I tried 0x3F for the address using hardware I2C (without var i2c = new I2C();).

  I realized the var names were different when using i2c = new I2C(); and changed them. This resulted in no errors, but the screen did not work. This of course was because the address was wrong.

• I2C Display - Write Error 33281

  in Interfacing • 1 month, 1 week

  

  SWEET! That clicked in my brain! The chip os an pcf8574AT. It's default address is 0x3F. I thought I had actually tried that out of frustration, but I guess not.

  Thanks for the help! It is usually something simple I have over looked.

• I2C Display - Write Error 33281

  in Interfacing • 1 month, 1 week

  

  Thank you so much for the responses! I am just now back at a computer to post this.
  I just realized that these are 5v. I have two of the same screens and backpacks.

  I have checked the connection many time, and I just tried flipping the pins.

  Here is my code.

  var i2c = new I2C();
  I2C1.setup({scl:D28, sda:D29});
  var lcd = require("HD44780").connectI2C(I2C1);
  lcd.print("Hello World!");
  

  I have tried with and without "var i2c = new I2C();"

  
  
  

  When I run: getPinMode(pin) I get "input_pullup" for both pins. That doesn't seem right

• I2C Display - Write Error 33281

  in Interfacing • 1 month, 1 week

  

  I feel like I am really missing something here. I have a 1602 display with an ic2 backpack. I am connecting it to a MDBT42Q Breakout, and using this doc: http://www.espruino.com/HD44780

  I have tried different pins. I have also added pull up resistors from vcc (5v) to scl and sda

  Here is the error I get. ...

  >Uncaught InternalError: I2C Write Error 33281
   at line 2 col 13
  g|4,g|4,g,g])
              ^
  in function "a" called from line 1 col 7
  a(51,1);a(50,1);a(40,1);a(12,1);a(6,1);a­(1,1);return{write:a...
        ^
  in function "h" called from line 2 col 15
  g|4,g|4,g,g])})
                ^
  in function "connectI2C" called from line 2 col 45
  var lcd = require("HD44780").connectI2C(I2C1);
                                              ^
  Uncaught Error: Cannot read property 'print' of undefined
   at line 3 col 4
  lcd.print("Hello World!");
     ^
  

• Bluetooth LE Audio Receiver

  @calebbrewer started

  • 3 comments
  • 572 views

  @Gordon replied
• Bluetooth LE Audio Receiver

  in Interfacing • 11 months, 4 weeks

  

  I have seen work done other places to get audio streaming working over Bluetooth LE (hearing aids for example). Would it be possible to get BTLE audio streaming of any kind working on Espruino?

• Magnetic Door Lock with Secret Knock, IR Sensor, & Web App | ESP8266 & Espruino

  @calebbrewer started

  • 6 comments
  • 1,094 views

  @calebbrewer replied
• Magnetic Door Lock with Secret Knock, IR Sensor, & Web App | ESP8266 & Espruino

  in Projects • 1 year

  

  Oh and thank you @MaBe You have helped me with every question I have posted!

• Magnetic Door Lock with Secret Knock, IR Sensor, & Web App | ESP8266 & Espruino

  in Projects • 1 year

  

  Thank you! Your work on Espruino is amazing!