There has been a good influx of interest in 3D printers and related technologies in the past few months along with more members purchasing kits (RepRap variations, Makerbots, and talks of a couple PrintrBots in the area). So lets get together and share what we have and work on the ones that need some help or time to get up and running.

Date: April 07 , 2012
Time: 12:00 - 3:00 PM EST
Location: 233 W. Bute St. Norfolk, VA 23510 in the 757Labs Front Conference Area

If you have an interest or want to see some 3D printers up close come on by. If you have a kit or a completed printer, bring it with you and let's share and contribute together!

NOTE: This event is open to the public, so come on out and join us!

-TJ

Like most 757Labs events, this is open to the public to those interested in the topic.

TCP Tuesdays, starting this week at 7:30PM

Based on a few previous message threads, and conversations at the lab, a number of people have indicated they'd be interested in a 'networking' class, in the style of Microcontroller Mondays. So, starting THIS TUESDAY (March 20), 757 Labs will be running TCP Tuesdays, hosted by yours truly.

The first night will be 7:30PM-Whenever, with a focus on getting 'setup' to learn and run labs yourself.

Please bring a non-crusty laptop (needs to be able to run a MIPS simulator - Core-series w/2GB of ram or better recommended). Linux/Windows/OS X should all work (I've not actually used Windows for this, but its 'supported'). No serial cables or other gear needed, yet.

-Adam

When: February 28, 2012

Time: 7:00PM EST

Where: 757Labs, 233 W. Bute Street Norfolk, VA 23510

Background on tonights project: Recently, Matt donated a 42" plasma TV that had failed, and it will be our subject for this presentation. Ethan will be reviewing this cold, meaning that he has not looked inside the TV or pre-checked anything out  other than confirming the service manual can be found on the inter-web. Ethan will cover both Plasma and LCD sets. While the one we will be looking at is a plasma TV.

Note: According to Ethan: It's not a profession, it's a hobby. My score so far: 5 wins, 2 losses. But 1 win is now a loss, but it could be a win again?  So it may be something simple or maybe more complex, come and join us.

We will try to record this and if its usable will distribute at a later time/date.

Date: February 25, 2012
Time: 12:00 - 3:00 PM EST
Location: 233 W. Bute St. Norfolk, VA 23510 in the 757Labs Front Conference Area

3d Print of a Penny Bottle Opener

In addition to our regularly scheduled Microcontroller Monday hack sessions at the lab we are pleased to announce that the first Monday of each month, starting in February (2/6/2012), we will be upping our game and having a more formal presentation session.

The February 2012 session will be all about the different microcontrollers that are available today, what they are and an overview on what they can do and how you (yes you) can get started using them. Whether you are a novice or a seasoned veteran there will be something for everyone during this session presented by the lab's own TJ.

Steve, Ethan and TJ checking out a project during a recent MM event

The sessions starts at 7:00pm EST on 2/6/2012 and is open to the public. If you have been interested this is your chance to participate.

Of course, being a con project, it was a bit last minute. Planning and software started much earlier, but it's just how things go. One huge last minute issue was when a relay failed. This relay was supplied with the Harbor Freight airhorn kit, and was used to switch the high current load of the compressor by means of the the microcontroller which was triggering the relay by means of a MOSFET.

After only a few tests the relay seemed to fail. One would guess the transistor failed, given that it's a 40 amp automotive relay. This failure, however, seemed to echo some online comments about the air horn kit.

Before heading to Radio Shack, I popped the top on one of the relays and low and behold, it's a lie. The 40 amp relay is really a fake case on a 5 amp relay. It was purposely made to look like it was a heavy duty 40 amp automotive relay, when it is not! I've heard about Chinese vendors doing this with capacitors, but never have witnessed it in real life. So here you have it, the 40 amp relay included with the Harbor Freight air horn kit is a lie.

The fix was ultimately to go to Radio Shack and pick up some replacement relays. A few taxicabs and a few Radio Shacks later relays that looked pretty similar to the Harbor Freight ones were in hand, but the Radio Shack ones weighed quite a bit more. We had 3 of the air horn kits, and sourced 3 replacement relays. The air horns draw at least 20 amps, so there is no way the supplied 5 amp relay (mocked up to look like a 40 amp relay) would last very long.

Relays before removal of cover. "40 Amp automotive relay":

Relays after removal of cover. It's really a 5 Amp PCB mount relay:

Unfortunately this delayed the airhorns until mid-day Saturday, as the Radio Shack nearby in the city closed early.

I wonder if Harbor Freight knows their supplier is lying to them?

757Labs has an interim board, and investigation is being done into 501(c)3 status.

There is a high probability that 757Labs will be moving to a different space in the same building. The space is smaller, but it will allow us to focus better. It will be a good move.

Microcontroller Mondays (every Monday, 7pm) continue to amaze. From introductory simple projects to demonstrations of quad-copters, it's been amazing.

Open hack nights continue to be great social events. Meet those into technology in the area.

Some members of 757Labs are working on an event for next year that is posed to be pretty epic. More details after the paperwork is signed.

Various members are working on a number of projects. Members have a key role at MAGFest, the Music and Gaming festival in Maryland on January 5th through 8th. There is also a project to be unveiled at Shmoocon in Washington DC. There is some upcoming involvement with another project that should be at PAX East in Boston. There are some other secret projects that could be huge. Once we clear the new year we hope to start posting some videos of what is going on. So hang in there!

On another note, if anyone knows of a multi-needle single head commercial embroidery machine that is available cheap that needs repair (electronic repair), please drop us a line. We'd like to add this to the range of tools available at the lab.

When: Wednesday, November 9th, 6pm to 10pm EST.
Where: 757 Labs, 233 W. Bute Street, Norfolk, Virginia.