Shared Projects

truzzi 3-channel, high power RGB LED driver V1.0

2 layer board of 1.04x1.4 inches (27x36mm). $7.30 for three.

C1, C2, C3: 22uF tantalum capacitors (DigiKey part number: 399-3781-1-ND)
D1, D2, D3; Schottky diode 2A SMA package  (DigiKey part number: B240A-FDICT-ND)
L1, L2, L3: 68uH power inductor, 0.7A (DigiKey part number: PCD2117CT-ND)
R1, R2, R3: 0.33ohm resistors, 0805 package.
4x screw terminals, 3.5mm (bought mine on Tayda Electronics)
3x PT4115 drivers.  
1x 4-pin + 1x 2-pin male or female headers.

PT4115

truzzi ATX PSU Breakout Mini V1.0

All SMD parts are 0805 or bigger

C1, C3: 0.1uF 0805 SMD capacitors.
C2: 1uF 0805 SMD capacitor.
F1, F2, F3, F4, F5: 1812 SMD PTC resettable fuses. (Littelfuse ones should work just fine, I used Bourns instead which are a bit larger).
J1: 24-pin ATX connector. I bought mine from Sparkfun but RS also sells them.
JP1: 3-pin header (for voltmeter output)
JP2: 6-pin header (for breadboard output, fused)
LED1, LED2, LED3, LED4, LED5, LED6: 0805 SMDs, choose the color you want but make sure to use appropriate resistors. You may not want full brightness and sure you don’t want magic smoke.
R1, R2, R11, R12, R15: 3.3K ohm, 0805.
R3: 330 ohm, 0805 (value may change – double check LM317 voltages).
R16: 10k ohm, 0805.
R6: 9/10W power resistor, not needed in my case.
R14: 1.2k ohm, 0805.
T1, T2, T3, T4, T5, T6: binding posts with 4mm hole. You may want some red ones for the positive lines and a black one for GND.
U1: LM-317, through hole. There should be enough space for a heatsink.
U2: TPS2513 from Texas Instruments. If you don’t have them, look up the datasheet and solder appropriate resistors on D+ and D- pins of the USB ports.
X1, X2: USB female connectors, through hole.

2 layer board of 3.95x3.94 inches (100x100mm). $77.65 for three.

Breakout board with two independently addressable ST Microelectronics' 2 Mbit (256 kbyte) M24M02-DRC I2C EEPROMs designed to be mounted onto the Teensy 3.1 and use digitalWrite for power and ground due to the very low-power (< 2 mA per EEPROM) requirements. Can also be used as a traditional breakout board since VIN ranges from 1.8 to 5.5 V. Cutting one or both traces between the solder jumpers enables write protect mode allowing access to the data already written but disallowing further write operations. The write protect is reversible by simply soldering the junction again. Operating temperature range is -40 C to +85 C making this an ideal solution for portable/remote data logging when power and space are at a premium. EEPROM write operational for 4 million write cycles and data is retained for 200 years!

PMP8817 Isolated Synchronous Flyback

Converts XProtoPlain outputs to BNC and translates AWG to +/- 8.5V values

2xIN4 Nixie Tube Display Board

Atmega 32u4 for Nova Labs by Small Batch Assembly

Cogwheel Circuitworks Nixie Tube Driver

Main Board - Feeding Frenzy / Amazing Maze

8pin to breadboard

True random number generator with USB edge connector hack, in a panel of 10 (Thanks, Dan!)

Adapter PCB for Analog’s DDS AD9102

For use with -Continuity tester main board- Has one LED and one NOT LED space, connection is 3V, Output, Ground. BD is LED and GD is NOT LED. when no short on continuity tester GD is lit and when a short is present BD is LIT

Arduino APM 5 Mode Switch Board

Board:

Images http://www.rcgroups.com/forums/showpost.php?p=30138164&postcount=4196

Board files & bom http://www.rcgroups.com/forums/showpost.php?p=30139892&postcount=4200

Original Post http://diydrones.com/profiles/blogs/arduino-mode-switch-for-arduplane-arducopter

$10.45 for three

simplified ws2812 breakout

PWM output pins (5 & 6) were swapped compared to the Moonlight Special driver. That has been corrected in this version.

THIS BOARD IS OBSOLETE. USE REV 5 INSTEAD