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iampy

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Reply with quote  #1 
This product looks awesome. Sends the BMS details over wifi to a phone app!
http://elithion.com/diyelectriccar.php
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amerjack

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Reply with quote  #2 
price???
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iampy

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Reply with quote  #3 
Its only works with their BMS system. I've heard it is about £500-£700 for the Lite BMS, and the wifi module. Not cheap!

I know someone who made his own BMS monitor from a Raspberry Pi, that has wifi so maybe wouldn't be so hard to make an app to communicate with that. Maybe that could be another 'Open Source' Project for us to look at!

I will ask my friend about it. The Raspberry Pi is only £30 and it has many I/O pins that can be used. I don't know what electronics he had to add to get that to measure voltages, maybe just a high value resistor into an analogue pin ... I will report back!
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iampy

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Reply with quote  #4 
Been told the Raspberry pi needs an Analogue to Digital converter to change the voltages to a digital input.
The MCP3008 chip (£2) can do 8 cells, so would need 2 for a 16cell set-up.

https://www.adafruit.com/products/856
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