Shared Projects

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THIS BOARD IS OBSOLETE.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

Enables use of 4 NES, NES, and/or N64 controllers as USB Joysticks

Replacement: https://oshpark.com/shared_projects/dC3iqMxp

EDIT, NOTE: PWM pins are hooked up backwards on v012, requires code changes in order to work right.

• added a covered 1mm via for SW+ hookup from rear, pass your wire through and just solder onto OTC pad if you want.
• improved LED- trace on bottom in order to facilitate the chunk eaten up by the 1mm via above.
• Increased LED+ and LED- vias to 1.3mm

BMX-055 9-axis motion sensor plus MS5637 pressure sensor with the SENtral EM7180 sensor fusion hub with M24512DFM EEPROM to store the SENtral configuration file. SENtral takes 9-axis accel/gyro/mag from BMX-055 and performs hardware sensor fusion returning raw data, quaternions, linear acceleration, and heading, etc. First attempt at using wafer-level, chip-scale package (WL-CSP). Breakout board using the SENtral with jumpers to take power from edge pins for breadboard use or to mount directly on the Teensy 3.1 for comparison between open-source software sensor fusion and the hardware sensor fusion provided by the SENtral.

Test board for ENC424J600

WR703N Expander v1

Developed in conjunction with the Sydney Hackerspace Robots and Dinosaurs Inc – June 2012 (featured on Hack A Day 24th June 2012)

This project is a small USB Hub & FTDI dual serial/GPIO/JTAG adapter. It was designed to match the form factor of the TP-LINK WR703N router, but can be used with almost any USB host. If you haven’t used the WR703N - it is a great little OpenWRT box, made even better with the I/O expansion from this board.

http://www.kean.com.au/oshw/WR703N/

http://wiki.openwrt.org/toh/tp-link/tl-wr703n

2 layer board of 1.93x2.01 inches (49x51mm). $19.30 for three.

USB led notifier

Now with less arcing and magic smoke release!

Uses a 10k resistor and Quad Analog Switch IC 4066 DIP14, schematic by Trimesh and following info:

Normally when you plug a cart in it grounds pin B32 of the cart connector - this is wired to the ASIC and when it’s grounded the TMSS ROM gets paged in. So if you just cut this line it disables TMSS - but it also disables the ROM CS/ line fed to the cartridge ROM, so the game won’t run. To get around this, ROM CS/ (pin B17) is disconnected from the ASIC and wired directly to A23 on the CPU address bus. This maps the ROM into the lower half of the CPU address space, At this point, the ASIC still doesn’t know the cart is plugged in, but the CPU can see valid instructions and will run the cart anyway.

This is obviously a very simple modification (2 trace cuts and one piece of wire), and it does effectively disable TMSS - but it also breaks compatibility with the various Mega Drive/Genesis addons. The 32X and the power base converter won’t work at all, and the Sega CD will work, but you can’t use cartridges when it’s plugged in (and in fact run the risk of damaging the cart, Sega CD or both through bus contention).

You can fix the 32X and PBC compatibility by checking the M3/ line (pin B30) - if it’s low, you have an accessory connected and you should renable CART IN/ and connect ROM CS/ back to the ASIC output pin. From a quick look at the schematic, this seems to be exactly what the mod in the first post is doing.

Personally, I would be inclined to use an analog switch chip to handle this, since it would be a lot simpler

Try this - note that it hasn’t been tested and might not work, but it looks reasonable, and it’s just a single chip..

no 12v, alim 5v on board, no gfci, no ac test

Build DOC https://drive.google.com/file/d/0B885rNIdD167R1hLc2s0aFB0UUk/view?usp=sharing

v0.13