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ARduino

BMS Continued

By |September 5th, 2015|COMPONENT BUILD|0 Comments

Today was not really nice outside. I stayed in, worked on my commercial project and done a few things to the BMS. Yesterday after quite a few hours of work on the commercial project I could not resist to start that new resistor network for the BMS cell voltages. Since the trim pots had arrived I wanted to do a prototype. Not on the extender shield in case I still need changes but on a separate little board.

I adjusted the values to maximise the voltage range from measurement through the Arduino. This will be done again with the real […]

BMS Screen On Arduino

By |September 1st, 2015|COMPONENT BUILD|0 Comments

Have the little screen connected to the Arduino and it is all working. Have finalised the design of the display graphics and implemented the 3 display pages I am going to use.

I also mounted the screen in its optional bezel for wall mounting.

Page 1 shows the bank voltage and the charge and load current, using 2 separate shunts measuring the incoming solar charge  and the outgoing load.
The image below shows this page on the screen with the Arduino connected. The second and third page have minor changes.

Page 2 shows the cell monitor and a couple of additional buttons and […]

BMS System Screen

By |August 31st, 2015|COMPONENT BUILD|0 Comments

Today my touch screen from 4D system arrived, finally. This was the second attempt via Australia Post. The order was placed over 3 weeks ago and they claimed to have it sent by express the next day. After 2 weeks I complained and they sent it again, by Express post. Neither the first, nor the second shipment was scanned by Australia Post and no tracking event was available. Today the second express satchel arrived after 5 days, Metro to Metro service, how pathetic.

I programmed it quickly with a test program to see if it works and discovered a problem. […]