Unnamed Design by Lutkeveld (Development Thread) |
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carlosdelondres
Registered User Joined: 21 June 2012 Location: London Status: Offline Points: 243 |
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Is the battery board a balance charger as well?
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lutkeveld
Young Croc Joined: 23 September 2013 Location: The Netherlands Status: Offline Points: 517 |
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Yes sir, you connect a series charger and the board does the rest. Really a plug and play system. No soldering required. Batteries go in like this: More details on the battery management system here: http://www.ti.com/lit/ds/symlink/bq76925.pdf
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Padde298
Registered User Joined: 13 July 2011 Status: Offline Points: 52 |
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I like it more and more!!!
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LOUDER!!! MO BASS
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Shortrope
Young Croc Joined: 08 July 2013 Location: Ireland Status: Offline Points: 1232 |
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Excellent...look forward to the finished product.
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My Tinnitus is coming along nicely!!
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carlosdelondres
Registered User Joined: 21 June 2012 Location: London Status: Offline Points: 243 |
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Looks great, I assume it will be easy to parallel multiple boards? Been looking for something like this that can handle 6S :)
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lutkeveld
Young Croc Joined: 23 September 2013 Location: The Netherlands Status: Offline Points: 517 |
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Yes, you can wire multiple boards in parallel or even stack them for increased capacity
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lutkeveld
Young Croc Joined: 23 September 2013 Location: The Netherlands Status: Offline Points: 517 |
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Small update:
Still have not send out the next revision. Found some issues and points of improvements. Improved: -More efficient (synchronous) DC-DC converter -Added power switch for the amplifier, shutdown current was too high (200uA) -Added zeners to protect the mosfets from blowing up on 20V+ -Added reverse polarity protection -Fixed issue with stacking, making it easier but limiting it to 4 channels total Here a cool render for in the meantime. New PCBs should arrive within 2 weeks: |
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Hemisphere
Old Croc Joined: 21 April 2008 Status: Offline Points: 2272 |
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Great to hear this project is still moving along. Looks tiny!
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lutkeveld
Young Croc Joined: 23 September 2013 Location: The Netherlands Status: Offline Points: 517 |
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62x36mm! Smaller than a credit card.
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Hemisphere
Old Croc Joined: 21 April 2008 Status: Offline Points: 2272 |
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Perhaps you could call it Cardioid
.. Actually that's a lot smaller than a credit card. Less than 2/3. There's gotta be a better standardised object to compare it to. A playing card is 2.5" across or 63.5mm so that would be a good reference for scale. Edited by Hemisphere - 27 November 2017 at 10:43pm |
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Padde298
Registered User Joined: 13 July 2011 Status: Offline Points: 52 |
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WHAT..? 62x36 mm, and you still have all this..: -Onboard programmable DSP -high power class D amplifier -Bluetooth 3.0 -Microcontroller for all kinds of tasks Based on: -TAS5754M: 2x50W max class D amplifier with onboard programmable DSP with functions like dynamic bass boost, psycho acoustic bass enhancement, softclipping, dynamic range limiting and 5 biquads per channel Let me know when ordering is possible!
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LOUDER!!! MO BASS
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lutkeveld
Young Croc Joined: 23 September 2013 Location: The Netherlands Status: Offline Points: 517 |
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New PCBs arrive 12 december. I really hope that the PCBs will pass compliance testing with the FB filter, an LC filter would be much bigger and more expensive. Maybe if they don't pass I will still sell those 8 pieces for the DIY market, they would still work well but just not within the strict limits of the CE/FCC.
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