Subject:
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Re: Hi
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Thu, 10 Jun 1999 17:32:46 GMT
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Original-From:
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BART_SCHRIJVER@HP-SONOMA-OMsaynotospam2.OM.HP.COM
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Viewed:
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887 times
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Satish:
The fact that the red and green leds in the lower left corner do not
light up and than shut off after ~1/3 sec. means that your board does
not reset and goes into download mode. This is the reason why the
downloader states: "Wrong Port or board mode".
Rechargeable NiCad's are only 1.2V per cell and regular or Alkaline
batteries are 1.5V per cell. So 8 cells of Nicad's translates to 9.2 V
total and 8 cells of regulars is: 12V total.
The handyboard design is such that when power is applied with a wall
adapter it tries to trickle charge the NiCad's if they are hooked up.
I do not think it is wise to hook up regular batteries since they
cannot be recharged plus they try to "fight" the charging circuit.
Between the batteries and the HB circuit their are two regulators, one
dedicated to keep the 62256 SRAM powered and one for the rest of the
board, so this may have protected sensitive components.
The HB buy the way will run without batteries hook up and just with
the wall adapter plugged in.
I would start by removing all CMOS components from their sockets
including the 68HC11 (may be difficult to get out of socket), of
course you cannot remove the address latch since it is soldered
underneath the RAM, so be careful with ESD. Then power your board with
just the wall adapter and check out the +5V rail throughout the
board.
If this checks out replace all part and just use the wall adapter, no
batteries.
You may already have fried some parts though, either trough statics or
over power.
Also, which parts get hot? You said board gets heated, but which part?
Hope this helps out, let me know what gives.
Bart Schrijver.
P.S. For
______________________________ Reply Separator _________________________________
Subject: Hi
Author: Non-HP-satishmk (satishmk@email.cas.american.edu) at
HP-PaloAlto,mimegw2
Date: 6/10/99 9:23 AM
Thursday, 10th day of June, 1999, 12:18 AM, EST.
Hi,
I recently joined the HB club by buying a pre assemebled HB. I
soldered the battery pack terminals to the HB (yes I checked the +ve and
-ve terminals). However, when I try to follow the instructions of
downloading the .s19 file, I get "Wrong Port or board mode". Also, I
noticed that the board gets heated and when I switch the board to download
mode, the LEDs don't blink for 1/3 second.
Could somebody tell me what I could be doing wrong? Could it be
because I am using regular batteries instead of recharables?
Thanks,
-SAtish.
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Message is in Reply To:
 | | Hi
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| Thursday, 10th day of June, 1999, 12:18 AM, EST. Hi, I recently joined the HB club by buying a pre assemebled HB. I soldered the battery pack terminals to the HB (yes I checked the +ve and -ve terminals). However, when I try to follow the (...) (25 years ago, 10-Jun-99, to lugnet.robotics.handyboard)
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