vstef_is

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• Automotive 20x4 chars LCD Display

  @vstef_is started

  • 8 comments
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  @Gordon replied
• Automotive 20x4 chars LCD Display

  in Projects • 9 years, 9 months

  

  Thank you. That is very interesting, but it's still for gas engines, whereas I run a diesel, hence there is no ignition coil to kick :)

• Automotive 20x4 chars LCD Display

  in Projects • 9 years, 9 months

  

  Alas, it's a four pot diesel. This isn't the ignition you're looking for... :)

• Automotive 20x4 chars LCD Display

  in Projects • 9 years, 9 months

  

  For the moment everything is faked - but I do have the code working for the voltmeter, time (doh!) and exterior temp.

  I intend to get the RPM from the alternator, which is a somewhat used method. It will involve some trial and error, but no biggie.

• How to get timezone with Espruino

  in JavaScript • 9 years, 9 months

  

  Sure, I just wanted to post this so you know as well :)

• How to get timezone with Espruino

  in JavaScript • 9 years, 9 months

  

  the Date / Clock modules are very useful - and I am sorry to bump an older thread... but... is it me or there is no getSeconds exported on Date ?

• flashing espruino on a olimexino-st32

  in General • 9 years, 9 months

  

  Actually the documentation / information on the site worked with no issues for me.

  I've just connected the USB/TTL thingy to D7/D8 and powered olimexino via the miniUSB port. Then enter perpetual boot mode (BTN1 + RST) and use the ST Flasher.

  I've just flashed the latest 1.65v a few hours ago.

• Automotive 20x4 chars LCD Display

  in Projects • 9 years, 9 months

  

  Hi there,

  I'm working on a small automotive display, using the following stuff:

  • Olimexino STM32 running the latest Espruino 1.65
    
  • a 20x4 HD44780 LCD 5V (white over blue) for which I'm using external power (and not the 3.3V the Olimexino board provides)
    
  • a Terratrip speed cable sensor (dedicated racing solution, easy wiring)
    
  • Simple Voltage Sensors (up to 25VCC, but my truck is 12VCC so it should be fine) to measure various auto probes - these are from robotbase.cn
    
  • and finally a DS18B20 temperature sensor for outside temperature.
    
    

  I've picked the Olimexino because it's noise immune, has a more industrial touch and is easily powered by 12V/5V/etc.

  So far I've managed to:

  • flash Espruino 1.65 to the Olimexino STM32 board
    
  • wire up the LCD and display a mock-up of what I want to achieve
    
  • run the Date/Time test app
    
  • build a small app to read voltages using the analog voltage sensors - which I've used to measure every charger and battery in the house - and it works great. I intend to use this to plug to various auto probes but mostly to check the level of battery charging the alternator delivers - in real time.
    
  • write this post
    
    

  I'll try to update as often as I can with code if anyone is interested.

  The information displayed is (left to right, row by row):

  • current speed | current date/time
    
  • current rpm | exterior temperature
    
  • partial odometer | engine coolant temp
    
  • total odometer | battery charging level