rtcBoB : Real Time Clock Break out Board, bare board (PCB)
ClockTWO rev 0 (Alpha) Board, bottom side
ClockTWO rev 0 (Alpha) Board, top side
ClockTWO rev 0 (Alpha) Board, Square peg in a Round hole
LED mounting holes are not big enough
rtcBoB : Real Time Clock Break out Board, top side
rtcBoB : Real Time Clock Break out Board, bottom side
rtcBoB : Real Time Clock Break out Board
assembled version of WordClock ver1 - Worduino
WordClock ver1 - WORDUINO
a 3d view of the ClockTWO ver0
a 3d view of the ClockTWO ver0 with the rtcBoB (top, right)
rtcBoB HW Assembly revision : soldered Battery directly to board - but first put a piece of insulation tape
rtcBoB HW Assembly revision : Filter Capacitor mounted at right angle to reduce board height.
A side view with the new HW Revision.
rtcBoB HW Assembly revision : soldered Battery directly to board - but first put a piece of insulation tape under the battery.
rtcBoB HW Assembly revision : soldered Battery directly to board - but first put a piece of insulation tape under the battery
rtcBoB HW Assembly revision : edge view
ClockTHREE - Board No. 01, ready for assembly
the first Row driver IC installed !
and the second one !
socket for the column driver
socket for the ATMega AVR microcontroller, running on the Arduino IDE.
row of resistors, one for each column
voltage regulator with heat sink
the PWR LED - I mounted it completely flush with the board (remember to hold the LED lead with a tweezer to prevent over heating)
the DEBUG LED - this is going to tell us if the board works or not after the "Blink Test"
Push Button Switches - MODE, INC and DEC
Bravo, the first LED goes in. Another 159 RGB + 32 Mono to go.
Hack : Cut track between Pins 18/19 of U4 and GND on component side
the first three LEDs in place
push buttons with extra long actuators
Hack : Add a link from Pin 26 of ATMega....
and link it up with Pins 18/19 of U4, 74HC154 Column driver
HACK : Inverting the Power In terminals on socket J1, V_IN
HACK : Cut out and isolate the square pad from GND
HACK : Cut the [+] track as shown
HACK : The [+] track isolated from its pad on J1, V_IN
HACK : Scrape out a small square patch on the GND plane, as shown.
HACK : Apply some solder to it.
A typical Power Adapter has its jack configured as pictured above. The ClockTWO alpha board has the termination reversed, requiring a HW hack.
HACK : Insert the Power In Socket.
HACK : Solder a piece of link wire as shown.
HACK : Add a wire link to GND plane as shown.
Potentiometer for Row Drivers, to allow brightness control - 2k pot + 470 ohm resistor
Socket for mounting the brightness control potentiometer
Brightness control potentiometer mounted on the socket.
LDR, mounted on socket.
rowBoB's have arrived on Jan 15, 2011
bunch of rowBoBs - row driver break out boards for Clock3
component and solder sides of rowBoB
rtcBoB's have arrived on Jan 15, 2011
bunch of rtcBoBs - Real Time Clock Break Out Boards for Clock3
Component and solder sides of rtcBoB
A dozen BoB's on my desk !!