OSH Park
Shared projects
DS1337 RTC+Supercap+7805 I2C module v3
by
Heisenbug.
2
layer board of
1.00x0.90
inches
(25.35x22.86
mm).
Shared on
March 29th, 2015 10:14.
$4.45 / set of 3
Physical assembly designed with the intent to be used in more of a vertical orientation, e.g. on a right-angle header plugged into a breadboard.
Batteryless clock module - now more shrinky than the old version!
Features access to all DS1337 IO pins plus a separate IO voltage supply for their pull-up resistors, and accessible connections to both sides of the discharge-blocking diode between the supercap and regulator.
DS1337S on top, Supercap (I chose a 1.5F that happens to have 30+ohm ESR) and 78L05 (SOIC version 5-volt regulator) on bottom, and one or a pair of [low-Vf] diodes makes for a batteryless clock module that will happily keep time with somewhere around monthly charging, on anything from 7+v (using regulator) or can be run direct on 1.8-5v.
Other passives on board bottom include 2 ceramic SMD caps (0.1u suggested) and 3 of the 4 SMD 0805 10k resistors, and on board top, 2 small electrolytic/tantalum, the last SMD 0805 10k resistor and the optional alternate PTH 10k resistor.
Charge session[s] should total 24-48 hours per month for better results with high-ESR supercaps.
The regulator can also power other small circuitry; just keep in mind power dissipation and current rating (~1W or 100mA).
Voicebox Board
by
tmdrake.
2
layer board of
1.01x1.51
inches
(25.68x38.38
mm).
Shared on
March 29th, 2015 07:54.
My own version of sparkfun’s voiceboard, only 4 button record/playback option. Simplified connections, on a nice purple board.
LCD Touch Board Rev B
by
stephenjust.
2
layer board of
2.99x2.07
inches
(75.92x52.65
mm).
Shared on
March 28th, 2015 22:32.
Apple night light
by
destos.
2
layer board of
3.15x2.27
inches
(80.09x57.56
mm).
Shared on
March 28th, 2015 20:20.
Used with MySensors.org
James Tone Module V1.2
by
bax.
2
layer board of
1.40x1.15
inches
(35.59x29.21
mm).
Shared on
March 28th, 2015 15:01.
PEC tone module for vintage Ampeg amps.
NEWARK PART NUMBERS:
C1 81K0910 Cornell-Dubilier CD19FD471FO3F CAPACITOR SILVER MICA 470PF 500V 1% RADIAL;
C2 31P2979 Cornell-Dubilier 150102K630BB CAPACITOR FILM 1000PF 630V 10% AXIAL;
C3 97M5728 Cornell-Dubilier 150103K400BB CAPACITOR FILM 0.01uF 400V 10% AXIAL;
C4 31P3011 Cornell-Dubilier 150472J630BB CAPACITOR FILM 4700PF 630V 5% AXIAL;
R1 64K5171 Ohmite OF224JE RESISTOR CARBON 220KOHM 500mW 5% AXIAL;
R2 78K8817 Ohmite OF223JE RESISTOR CARBON 22KOHM 500mW 5% AXIAL;
Belden 22ga 8021 bus wire