Celestial
Audio
Jesse Lackey - freelance electronics design, located in Oakland,
California.
Contact: jesse@celestialaudio.com
news flash:
High channel count DMX LED
dimmer packs for sale!
Two commercial spinoffs of client projects. Every
board is assembled,
tested, and supported by the engineer who designed it, here in
California. Ask
me questions about your application! Every customer is a client, not an entry in some
marketing department's CRM database.
DMX LED Hardware main page
32 channel DMX 4-Amp LED dimmer pack:
this board controls 32 LED
clusters (or anything DC powered) of up to
48V @ 4 Amps each. Beefy!
$259 USD.
48 channel DMX 20mA LED dimmer pack:
this
board controls 48 LEDs (single
LEDs or several in series) at 20mA each,
with no current-limiting resistor needed. $159 USD.
Project Portfolio.
Some of
more than 30 completed in
the past 4 years finally being documented on-line:
Pro Audio: (in order of
sophistication)
4 channel mic preamp
and A/D converter for surround sound recording, battery powered portable
(Keywords: Xilinx FPGA, VHDL, PIC 18F, C, USB, Audio
Precision)
2 channel mic preamp and A/D
converter,
battery powered portable
Phantom
power 2 channel P48V unit, battery
powered portable
Headphone
Amp and DAC high
performance headphone amp and D/A converter, battery
powered portable
DMX and LED related:
Controllers and display drivers (no
LEDs), in order of sophistication
Leoplayer: Ethernet
and
SecureDigital card file
playback to DMX and custom RS-485 installations
(Keywords: MC9S12NE64, HCS12, Ethernet, TCP/IP, LCD,
SD,
dc/dc, DMX, C, Imagecraft ICC12, NoICE)
DMX 16-AC: 16 channel DMX controlled
3500W AC light switcher
(Keywords: RS-485 Isolation, PIC18F442, Solid-state
relay, C)
DMX 32-DC: 32 channel DMX
controlled
LED / 10-Amp LED cluster dimmer
(Keywords: RS-485 Isolation, PIC18F442, NFET, C,
Sotware PWM)
Displays (LEDs and
electronics on same board), in order of sophistication
144 RGB: a 9" x 9" grid of 12 x 12 RGB
10mm LEDs, DMX controlled
(Keywords: DMX, Multiplex, PFET, TLC5940, PIC
18F2520, C, high current)
bm2006: 25 RGB
10mm LED 9V battery powered wearable for burningman 2006 (also with
RS-485 control)
(Keywords: DMX, Multiplex, PFET, TLC5940, PIC
18F2520,
C, portable)
Hive:
25 LED RS-485
controlled board (each LED individually dimmable) in a 192 unit
installation
(Keywords: RS-485, TLC5940, PIC 18F252, C)
bm2005:
16
white 10mm LED 9V battery powered wearable for burningman 2005 (also
with RS-485 control)
(Keywords: RS-485, TLC5940, PIC 18F2520, C,
portable)
bm2004: 25 orange
5mm LED 9V battery powered wearable for burningman 2004
(Keywords: PIC 18F442, NFET, C, portable)
DMX splitter, 8-way,
world's smallest I'm sure
Also see the pile of miscellaneous
projects, many involve blinking things, if you're into that kinda
stuff. (who isn't?)
Other: (in order of
sophistication)
(more coming soon)
Terp: wirelessly controllable mp3
player using Smartmedia flash memory & rechargeable li-ion battery
(Keywords: PIC18LF6720, STA013, dc/dc, Linx HPIII,
900Mhz, MIDI, Smartmedia, FAT12, C)
PICBasic
programmable: general-purpose control board for onesies of
custom random art+tech stuff
(Keywords: PIC18F4620, RS-485, NFET,
Potentiometer, C, PicBasic)
Many other things: projects too small
to warrant their own webpage. I've done a lot of miscellany
(Keywords: PIC 18F, PIC 16F, C, Assembler, MIDI, EL
wire, triac, xenon strobe lights, RS-485, DMX splitter)
Ancient things.
The "WaveFix" Freebie Software (DOS)
Windows 95 / DOS / PC Hardware tips and
tricks
for audio work (in case you are stuck in 1996)
personal misc junk-ola