Hack Notes CVA 091222: Difference between revisions

From Noisebridge
Jump to navigation Jump to search
No edit summary
m (Reverted edits by 194.132.32.42 (talk) to last revision by SpammerHellDontDelete)
 
Line 1: Line 1:
<span style="font-size:580%">[http://twitpic.com/du8uxa Hardcore jerkey action]</span>
<span style="font-size:580%">[http://twitpic.com/du8uxa Hardcore jerkey action]</span>
<span style="font-size:580%">[http://twitpic.com/du8uxa Hardcore jerkey action]</span>
<span style="font-size:580%">[http://twitpic.com/du8uxa Hardcore jerkey action]</span>
<span style="font-size:580%">[http://twitpic.com/du8uxa Hardcore jerkey action]</span>
<span style="font-size:580%">[http://twitpic.com/du8uxa Hardcore jerkey action]</span>
<span style="font-size:580%">[http://twitpic.com/du8uxa Hardcore jerkey action]</span>
<span style="font-size:580%">[http://twitpic.com/du8uxa Hardcore jerkey action]</span>
<span style="font-size:580%">[http://twitpic.com/du8uxa Hardcore jerkey action]</span>
<span style="font-size:580%">[http://twitpic.com/du8uxa Hardcore jerkey action]</span>
<span style="font-size:580%">[http://twitpic.com/du8uxa Hardcore jerkey action]</span>
<span style="font-size:c.com/du8uxa Hardcore jerkey action]</span>
<span style="font-size:580%">[http://twitpic.com/du8uxa Hardcore jerkey action]</span>
<span style="font-size:580%">[http://twitpic.com/du8uxa Hardcore jerkey action]</span>
<span style="font-size:580%">[http://twitpic.com/du8uxa Hardcore jerkey action]</span>
=Hack Notes 2009-12-22=
=Hack Notes 2009-12-22=



Latest revision as of 23:06, 2 February 2014

Hack Notes 2009-12-22[edit]

Belt?[edit]

V1.5 limit to just 8 motors for simplification purposes.

For a belt mod, reserve some V1.0 boards and instruct people to add diodes - deals with inventory problem.

NP V1.5[edit]

  • Settle on new parts

New parts for LiPo battery upgrade mod:

battery: sparkfun PRT-00341 charging IC: newark 59J2761 USB Mini B jack: digikey 670-1190-1-ND JST jack: digikey 455-1719-ND

  • Mounting acrylic - how many screws?
    • Make a mock-up
    • Border pieces - later cut tongue and grooves for snappage
      • Ask Rachel for feasability
    • Hold the boards in with notches (+$20 for more than 6pts board shape) = no holes!
  • No atmel socket - it's tall enough and people can figure that out
  • Investigated brownout detection, not useful

TODO / INVESTIGATE[edit]

  • Bigger cap to make the voltage drop less meaning the atmega won't reset when motors ramp up on low batteries
  • Switch to internal oscilator for simplicity and power saving, timing vars need retweaking???
  • Find/make through-hole usb mini eagle part

DONE[edit]

  • Add copyright info to code and old eagle files
  • Batt charging cap not spec'd yet, just copied the 0.1uF part
  • Put in RGB LED red=charging green=on