neato robot cleaner
needed to open and fix the side brush
o-ring dried and failed
and while waiting for the o-ring to arrive
saw an actual speaker instead of just a buzzer
and thought of a nice new upgrade to its boring sound
used some stuff that i already had
bluetooth module cost about $1
amplifier module cost about $0.25
also added another speaker that i had
speaker resistance should be the same for both sides left / right
lower resistance is better in general
in the case of neato d85 it was 8 ohms 1.5w 2.5cm
quick inspection look like ajt 436 so maybe max 436?
package size is 1x1mm
a matching speaker should cost about $0.40
and small diy job of wire extensions and speaker mounting
vhm-314
pam8403
current consumption while idling is about 190mw
while playing at full volume consumes around 850mw
although i dont mind if the robot battery wont hold the charge
to complete the full cleaning cycle it might be worth
to add a small separated battery for the music section
and a short video
sounds much better and most importantly
stronger then the boring vacuuming sound
sound and motor test
still get some annoying distortion
need to get a stronger neodymium speakers
the location of the added speaker seems reasonable
and should be facing the middle of the room
as the opposite side housing the side brush
which should face the wall and corners
more photos and videos to be continued
