Wednesday, Jul 13th, 2011
I few days ago i got an email from Paul Stoffregen of PJRC offering to donate some cosmetically challenged but fully functional Teensy's for Arch Reactor to create projects with. Yesterday, just hours before our scheduled monthly Show and Tell night...
Monday, Jul 4th, 2011
Daniel's internship at a small web solutions firm translates into a new, better website for Arch Reactor! Find out about the new features he plans to add.
Tuesday, Feb 8th, 2011
Tonight featured a massive turnout of AR members who participated in the elections of the new board.
Tuesday, Jan 25th, 2011
Ryan are Taylor are now officially married, completing the first nuptial proceedings to occur at a hackerspace.
Wednesday, Jan 19th, 2011
Even though we just turned up the heat with our recently-connected gas heater, Arch Reactor intends to bring plenty of ice to complement the fire that the Gateway Burners are bringing to the Fire & Ice Benefit this weekend.


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Upcoming Events


  1. Rob Presents Aquaponics

Thursday, October 27th

  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

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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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