Shop OBEX P1 Docs P2 Docs Learn Events
ni-cd AA battery — Parallax Forums

ni-cd AA battery

nishinishi Posts: 8
edited 2008-01-29 03:09 in BASIC Stamp
hi all,
can anybody tell about Ni-cd AA rechargeable battery pack?i wan give power supply to GPS receiver and BS2 Boe. is it recommended to use the Ni-cd AA 700mAh 9.6v battery pack for this purpose?any instructions are appreciated.

regards;
nishi

Comments

  • Mike GreenMike Green Posts: 23,101
    edited 2008-01-27 04:39
    The BOE will operate with a 9.6V battery pack, but the voltage above about 5.5V is all turned into heat. It would be better to use a 6V (5 x NiMH AA) or 7.2V (6 x NiMH AA) battery pack. The GPS receiver requires a regulated 5V supply which the BOE can supply since it has a voltage regulator on the board.
  • nishinishi Posts: 8
    edited 2008-01-27 04:46
    thanks.just now,i was testing GPS receiver module with 9.6V but suddenly my GPS receiver poped off and gave a smell.now only blinking the red-light in GPS receiver but when i hooked the SIO pin to p15 with the BS2, the debug window shows that there is no response from GPS module,then why the RED-light is still blinking?do you think my GPS receiver gone already?
    thanks
  • Mike GreenMike Green Posts: 23,101
    edited 2008-01-27 04:55
    Connecting 9.6V to the GPS's 5V supply input can certainly destroy the GPS receiver and very quickly. It's possible that only part of the module was damaged which is why the red light is still blinking. It's impossible to tell without carefully examining the unit. The smell and pop indicate that some components burnt up.
  • nishinishi Posts: 8
    edited 2008-01-27 05:00
    now what to do?can this part be sent to parallax and replaced/repair?i just got this GPS receiver module about 10 days ago.any suggestions?thanks for your quick response.
  • Mike GreenMike Green Posts: 23,101
    edited 2008-01-27 05:13
    Call or e-mail Parallax's customer service people on Monday. They may have some suggestions for testing it. If damaged, you can often send it back for repair or replacement for part of the cost of a new unit.
  • nishinishi Posts: 8
    edited 2008-01-27 05:23
    ok,tnk you very muck.have a nice time.
    regars;
    nishi
  • nishinishi Posts: 8
    edited 2008-01-28 15:57
    hi all,
    may i know where is P16 in the BOE which is recommended in many discussion to use with SEROUT.thanks.
  • FranklinFranklin Posts: 4,747
    edited 2008-01-28 16:00
    p16 is a 'pseudo' pin and is the serial port on the boe. It has different parameters than a regular pin and is used as the default port for debug commands.

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    - Stephen
  • allanlane5allanlane5 Posts: 3,815
    edited 2008-01-28 16:12
    Correct -- using "SEROUT 16 ..." indicates to the BS2 runtime to use the "programming" DB-9 port -- in that way, the '16' is a 'pseudo' I/O pin meaning "don't use a literal I/O pin 16, instead use the programming port".
  • nishinishi Posts: 8
    edited 2008-01-28 16:19
    Thanks,how to create a 'pseudo' pin? using resistor?where to connect?with any pin?
  • allanlane5allanlane5 Posts: 3,815
    edited 2008-01-28 16:32
    No. Using "16" in the SEROUT indicates to SEROUT that it should use the 'programming port'. You are not creating anything, the '16' is merely an indication to SEROUT to use the programming port.
  • dandreaedandreae Posts: 1,375
    edited 2008-01-28 21:55
    The GPS module is a TTL logic device, you'll want to use one of the 16 I/O pins for this device.



    Dave

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Dave Andreae

    Parallax Tech Support·
  • allanlane5allanlane5 Posts: 3,815
    edited 2008-01-28 22:45
    In other words -- "SEROUT 0 ... " up to "SEROUT 15 ..." -- choose one of those.
  • nishinishi Posts: 8
    edited 2008-01-29 03:09
    ok,thanks
Sign In or Register to comment.