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Uncaught InternalError: I2CWrite: No ACK 0

Make sure you connected SDA and SCL to the pins you use.

Just to recap:

steps you did to get a stable Espruino:

• erase flash

• flash files from dir espruino_1v95_esp8266_4mb with flash_size 4mb-c1

Wifi stuff:

Wifi.connect(SSID, {password:SSIDPASS}, function(err){
  if (err === null){
    console.log('Connected to AP');
    Wifi.stopAP();
    Wifi.setConfig({powersave : 'none'});
    Wifi.save();
  } else {
    console.log('connetion error',err);
  }
});

I am interested in output of console.log('connetion error',err);

there are now some updates on the ESP8266 page - check section Build Content

This is the reason you have to run a extra neopixel.write() command:

Every time you upload with reset some extra pinMode commands are included:

>reset()
=undefined
 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v95.3493 Copyright 2017 G.Williams
Espruino is Open Source. Our work is supported
only by sales of official boards and donations:
http://espruino.com/Donate
Flash map 4MB:1024/1024, manuf 0xe0 chip 0x4016
>dump()
pinMode(D0, "input_pullup", true);
pinMode(D4, "input_pullup", true);
pinMode(D5, "input_pullup", true);
pinMode(D12, "input_pullup", true);
pinMode(D13, "input_pullup", true);
pinMode(D14, "input_pullup", true);
pinMode(D15, "input_pullup", true);
=undefined

This is very helpful, because you always start with the same defined pinMode for all pins.

I suggest to include a pinMode() for pins you use different.

var neo = require("neopixel");
var neoPin = NodeMCU.D4;  // D2
pinMode(neoPin,'output');
neo.write(neoPin, [25, 0, 0]);  // 255 is to bright for me :)

Ups, mixed it up - sorry .....

Analog input on ESP8266 a very poor, but you can try.

There is a module for the MQ135 Air Quality Sensor , might be a good starting point.

Hi, check this link and try this sample.

If this works for you, please add your test code and some comments - if you like :)

After upload and starting some function manually, I got this message on a ESP8266 device.

Otherwise it is possible to turn on hardware flow control for the ESP8266. It's something I haven't enabled by default yet, but we could try that?

How to enable and try this hardware controll?

To be honest, I was thinking about adding it to GRAPHICS as option and call it like this:

Graphics.createArrayBuffer(16,16,24, {panelMap:[[0,64],[56,120]]})

Thanks for you test and feedback.

Does is reconnect to the AP after require('ESP8266').reboot() ?

A 4mb build has more save pages

16 versus 3

Only espruino_1v95_esp8266_combined_512.bin does,

start with esptool.py --port /dev/ttyUSB0 --baud 115200 erase_flash and then follow
conversations http://forum.espruino.com/comments/14055­829/

Paul is writing to offset 2 eeprom.write(2,[55,99]), I also missed this on first sight :)

Hi @user85573,

can you please share output of esptool.py --port /dev/ttyUSB0 --baud 115200 flash_id as 16MB is missing on my list of ids.

W25Q40BV ( 4 Mega Bits / 512K Byte ) = ID 4013h
W25Q80BV ( 8 Mega Bits / 1 Mega Byte ) = ID 4014h
W25Q16BV ( 16 Mega Bits / 2 Mega Bytes ) = ID 4015h
W25Q32BV ( 32 Mega Bits / 4 Mega Bytes ) = ID 4016h
W25Q64CV ( 64 Mega bits / 8 Mega Bytes ) = ID 4017h

Edit:
Ups missed than on your post manuf 0xef chip 0x4018

so it is

W25Q128FV ( 128 Mega bits / 16 Mega Bytes ) = ID 4018h

DS1307 and AT24C32 on TinyRTC

• integrated 3.73 pullups
  
• used module DS3231 - work perfect with DS1307
  

• tested on ESP8266-04,12E/F 1v95

  var SDA = D5, SCL = D4; // ESP8266
  I2C1.setup({scl:SCL,sda:SDA, bitrate:100000});
  
  var rtc = require("DS3231").connect(I2C1, { DST : true });
  rtc.setDate(Date().getDate(),Date().getM­onth(),Date().getFullYear());
  rtc.setTime(Date().getHours(),Date().get­Minutes(), Date().getSeconds());
  
  setInterval(function() {
  console.log(rtc.readDateTime());
  }, 1000);
  
  /* output
  23/00/18 22:06:20
  23/00/18 22:06:30
  23/00/18 22:06:40
  */
  

Thanks Gordon, will test this later

As you have a 4016 chip which is 4MB of size, you can try those files:

http://www.espruino.com/binaries/espruin­o_1v95_esp8266_4mb/

esptool.py --port /dev/tty.SLAB_USBtoUART --baud 115200 write_flash --flash_freq 80m --flash_mode qio --flash_size 4MB-c1 0x0000 boot_v1.6.bin 0x1000 espruino_esp8266_user1.bin 0x3FC000 esp_init_data_default.bin 0x3FE000 blank.bin

Yes, of course, see the new version of the REAMDE.txt

Is wifi.save() no working for you?

Take a look at Flash storage Module, any js type , web pages, css, js and images by Wilberforce

let esptool.py figure out your flash size

esptool.py --port "$COMPORT" --baud 460800 flash_id

  Manufacturer: e0
  Device: 4016
  Detected flash size: 4MB

W25Q40BV ( 4 Mega Bits / 512K Byte ) = ID 4013h
W25Q80BV ( 8 Mega Bits / 1 Mega Byte ) = ID 4014h
W25Q16BV ( 16 Mega Bits / 2 Mega Bytes ) = ID 4015h
W25Q32BV ( 32 Mega Bits / 4 Mega Bytes ) = ID 4016h
W25Q64CV ( 64 Mega bits / 8 Mega Bytes ) = ID 4017h

@DrAzzy See #10

It is time to use a logic analyser.

Thanks for sharing this test 👍🏻

if Flash map 4MB:512/512 and chip 0x4016 use this flash command from this link

http://forum.espruino.com/conversations/­314732/#14021236

moved the wifi connect to the onInit function and it works on reboot

Sure, this is a possible workaround.

Please share the Espruino startup screen and the text output after wifi.save()

| |_ ___ ___ _ ||___ ___
| |_ -| . | _| | | | | . |
||| || |_|||_|_|

      |_| http://espruino.com

1v95 Copyright 2017 G.Williams
Espruino is Open Source. Our work is supported
only by sales of official boards and donations:
http://espruino.com/Donate
Flash map 4MB:1024/1024, manuf 0xe0 chip 0x4016