Friday, Apr 12th, 2013

Science Olympiad Saturday 

Saturday April 13th, 2013

5:00PM until 9:00PMish 


Open to all ages and to the public. People are encouraged to form teams of 2 or 3 people.  Individual players will be matched up prior to the event.  We are asking for a $5 donation per team to cover supplies which will be provided.  Three events are planned:
1)  Egg Drop  -  Teams will construct apparatuses to be dropped from the top of the building and safely land on a ground target.
2  Boomilever   -  Teams will design a boomilever (google it).  Score will be a combination of weight, weight held and duration of holding the weight.
3)  Rube Goldberg machine.  Teams will construct a three phase machine with stuff off the junk bins or from within the space.  Coolest operational design wins.    The rest of the night can be spent combining all the entries into a promotional video for AR.
  This event is guaranteed to be fun, prizes are likely to be a slap on the back and status label of "Cool People of the Day".  Scoring system is still being finalized but is weighted equally over three events.  If there's a tie (which I'm hoping for) , the tie-breaker is awesome.


Tuesday, Apr 2nd, 2013

Arch Reactor Open House This Saturday

April 6th 2013


Click on the link to signup to be a presenter

Thursday, Feb 28th, 2013

Arch Reactor will be displaying our various projects including microprocessors, soldering, 3D printing, and beyond.  Come on by to say hi and get a chance to meet us.  Saturday 3/2/2013 from 2-4pm.


Sunday, Feb 10th, 2013

Soldering & Desoldering A Hands-On How-To Workshop

When: Saturday February 16, 2013 at 9:30am Where: Gateway Electronics

2220 Welsch Industrial Court – St. Louis, MO 63146

What: Participants will learn the basics of soldering and removal of surface

mount components without using costly commercial equipment.

Instructor: Jeff Jackson Materials Fee: $10.00

Class size is limited Advanced registration required Participants

must have experience with thru-hole soldering.


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Upcoming Events


  1. Laser Workshop Night
    • Start time: 07:00pm
    • End time: 08:00pm
    • Where: 2215 Scott Ave, St. Louis, MO 63103, USA
    • Feel free to come by to learn how to use the laser cutter, talk about laser cutters, work on laser cutter projects, etc!

      Contact Person: Travis

    • View this event in Google Calendar
  2. Scott's Dry Run for Silicone Mold Casting

Sunday, October 30th

  1. Hack Something!

Tuesday, November 1st

  1. Business Meeting

Friday, November 4th

  1. 2600 Meeting
    • Start time: 06:00pm
    • End time: 10:00pm
    • Where: 2215 Scott Ave, St. Louis, MO 63103, USA
    • Arch Reactor is proud to host the only St. Louis 2600 meeting. All 2600 meetings are open to the public. Visit for more information regarding topic.

      More details about 2600 can be found at

    • View this event in Google Calendar
  2. First at Science Center
    • Start time: 06:00pm
    • End time: 07:00pm
    • Where: Saint Louis Science Center, 5050 Oakland Ave, St Louis, MO 63110, United States
    • The Walking Dead

    • View this event in Google Calendar

Sunday, November 6th

  1. Hack Something!
  2. Open House

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Visit Us!

Come check out the space at one of our regular Tuesday meetings or Sunday hack nights, year-round. Tuesday and Sunday events are always open to the public, and generally begin around 7:30 pm.

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About Our Hackerspace

Arch Reactor was founded in 2009 by a group of friends who liked technology, programming, making, and pizza. Now St. Louis' largest hackerspace, Arch Reactor's growing membership continues to bring new skills, projects, equipment, and people to one place.

For a deeper understanding of what we're about, you should check out our explanation of hackerspaces, perhaps read about one of our members' projects, or (best of all) come meet us in person at the next open event!

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