Hot Diode

Ideas and questions about MintyBoost kits

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shmagoogin77
 
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Hot Diode

Post by shmagoogin77 »

Im using the old minty boost pcb to power a simple bike light from ladyada's tutorials. When i connect the 2 AAs to the minty boost the diode pins on the underside of the board get very hot. Should i try replacing the diode?

adafruit
 
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Post by adafruit »

are you using a schottky diode?

shmagoogin77
 
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Post by shmagoogin77 »

ya the one from the kit

adafruit
 
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Post by adafruit »

well, does it work? :)

shmagoogin77
 
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Post by shmagoogin77 »

sorry i forgot to explain :lol:
ok so the diode gets very hot and the output is 0
also the 2 AAs get hot and output aroun 1.5 v
its very strange

adafruit
 
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Post by adafruit »

you should post a picture of your kit it will make it easy to debug the problem

The_Don125
 
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Post by The_Don125 »

Is the diode in the correct way? Sounds like it might be creating a short circuit across the batteries.

shmagoogin77
 
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Post by shmagoogin77 »

the minty boost had been working fine before
i even had it power my arduino and everything but now the diode gets hot and shorts the batteries
i just got some maxim ic samples for the booster so maybe i could try replacing the chip

adafruit
 
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Post by adafruit »

you should post a picture of your kit it will make it easy to debug the problem

shmagoogin77
 
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Post by shmagoogin77 »

is it possible that i overloaded the current?
i had it powering a standalone arduino along with 5 leds

Image

Image

adafruit
 
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Post by adafruit »

without connection to the arduino, check the output voltage
then verify you're connecting gnd to - and vcc to +
try again?

shmagoogin77
 
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Post by shmagoogin77 »

i tested it with the AVR unplugged
im still getting nothing :cry:

adafruit
 
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Post by adafruit »

sounds toasted
i would def try a different max756 i run arduino's off of mintyboosts and its just fine
also check
batteries, your multimeter

shmagoogin77
 
Posts: 30
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Post by shmagoogin77 »

alright
thanks ladyada
side question: with R4 and R5 in the pullup mode will it work with other devices besides the ipod 6thgen or does it vary?

adafruit
 
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Post by adafruit »

it -should- work for all ipods and devices

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