DIY Projects
“The world is moving so fast these days that the man who says it can't be done is generally interrupted by someone doing it.” ― Elbert Hubbard
Sunday, January 22, 2023
low cost spectrometer ish ALTA II tear down
Sunday, January 24, 2021
neato speaker hack (stereo + bluetooth)
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
and small diy job of wire extensions and speaker mounting
vhm-314
Wednesday, January 13, 2021
srs sr620 universal time interval counter
the scrambler (voice) acs-2
blaming the customs for the broken handset
Tuesday, January 12, 2021
tds3054 oscilloscope 500mhz 5gs/s
tds3000 series are all the same (bandwidth is limited by sw)
tds3012, tds3032, tds3052, tds3014, tds3034, tds3054
fixing a dead channel (cold joint)
replacing bad capacitor