Magic Stop Telcom / Audio / Relay Control Managment Series




Introduction: Magic Stop Telcom / Audio / Relay Control Managment Series

After 6 months of development time I am ready to help others build from my work. MAGIC STOP is on its way. (Mask is Optional :) This Electronic Lone Ranger will help you control and safeguard your home or business.

UPDATE: More Specific what this Magic Stop thing actually does; per request & I apologize for not including before.

1. From Your Cable / DSL Modem RJ45 Cat 5 wire plugs in to Magic Stop.
2. Plug the RJ5 Cat 5 Wire from Magic Stop other RJ45 Connector to your Router (or) Computer.
3. Your main phone line plugs in to Magic Stop.
4. Plug another  phone wire from Magic Stop to a phone jack for other phones.
5. Plug your USB Camera in to Magic Stop. (Connector not shown here - still waiting delivery).
6. Plug USB cable from Magic Stop to your Computer.
7. Plug PC Speakers in to Audio Jack of Magic Stop (Shown - 2 small 3.5mm jacks).
8. Plug 3.5mm audio cable from Magic Stop to your Computer.
9. Plug in 9vdc adapter or just a 9 volt battery.
10. Set SW1 (Red 8 position Dip Switch) for example: 1, 2, 3, 4 & 8 closed.

Press Remote Button A to Remove your Home from the GRID by disconnecting

- Internet
- Phone
- USB Camera
- USB Speakers.

When there is no longer a need to be off the GRID then press A again to return to normal.

NOTE: A different box is being designed for Cable TV.

To Be Clear and as a Disclaimer:  The use of the Adafruit 315 Mhz Receiver / Transmitter Remote would require FCC Certification.
We don't sell them. You can obtain them though.

Step 1: The Relay Board Where Signals Meet and Split.

The Relay board is configured for 1 to 8 SIP Reed Relays powered by 5v (Current Relays Shown) with option of powering 9v SIP Reed Relays.  As currently traced  Pins 1 & 7 are Relay Contact;  Pin 3 is + volts and Pin 5 is - volts.

The Board is traced so that + Volts feed all relays concurrently; and unswitched.  Negative (-)  of relay Pin 5 are pulled down to ground  by either transistors; or another relay or optocouplers on the customizable Magic Stop Control Board. (Shown in next step).

Power is 9 volt (Battery or AC/DC Adapter) via the DC Power Jack and can be sole power source if control board only uses 9 volts and/ or 5 volt regulator is installed on control board instead of Magic Stop Relay Board.

The PWR Jumper (3x2 female connector) with light blue jumper in it  as shown in picture can be jumpered to allow the following:

DC 9 volt feed Relays & Control board.
DC 9 volt feed is only to Relays.
DC 9v --> DC 5v if optional 5 Volt Regulator and accompanying 2 capacitors (Blue & Black Dielectric Cans show in picutre)
DC 9v --- Relay;  DC Regulated 5 Volt to Control Board;  ---> Ardurino 5v to feed Control board or all components as required.

The Red 8 position DIP Switch is used to configure control of channels A, B, C, & D by Arduino and/or RF Receiver.

Switch 1 is Arduino D4 / RF D0 for control of Relays 1, 2, 3 & 4

Switch 2 is Arduino D5 / RF D1 for control of Relays 5 & 6

Switch 3 is Arduino D6 / RF D2 for control of Relay 7

Switch 4 is Arduino D7 / RF D3 for control of Relay 8

Relays are traced to the very top right dual connector where lowest pins are Relay 1 and Top pins are Relay 8. (Relay Pin 1 & 7)

Step 2: Magic Stop Control Board

As show is my first attempt at a simple 2N3904 transistor control for the 4 separate digital signals, D4, D5, D6 & D7 from Arduino or Spark Core AND/OR from Adafruit 315 Mhz Receiver. (RF Socket is at the lower right of board, 7 pin female socket).

A better layout would be nice.

Step 3: Magic Stop Telcom Audio Board.

The MS Telcom Audio Board is where you plug in your  Network Router; Telephone Line; USB Camera (Waiting on Connectors); Audio Speakers allowing you to control when you are recorded or who has access to telecommunication signals.

Will also contain RCA Composite Video & Audio jacks. (For patching audio and video  feed to monitors & or other TV's via DVD player etc.

In other words; This board allows you to connect and then Drop one room or your whole house / business from the GRID and have complete control over who is listening to or watching who or what.

Relevant connectors are all on .100" spacing and Arduino connectors match.

Step 4: Automation for This Device.

I am currently working on a Telcom Board (See my Mad Science Bread Board Approach - See Picture above) that will work in conjunction with a Linksys PAPT2 VOIP Adapter to allow use of your home phone lines not being used at this time. The system can act as a Two line Phone Intercom system as well as a patch to VOIP on you network. (This VOIP process is from this instructable - Credit Due and its a great Instructable)

Arduino Control - It was easy to build a web interface that controls the Digital Pins D4, D5, D6 & D7.

Android interface will be needed next but, that is where the Spark Core comes in. (Still waiting for my Core).

The Spark Core is a WiFi Enabled Mictrocontroller that (for the most part) can run Arduino Libraries (With some tweeking).  The makers of Spark Core are porting Arduino libraries for use on the Spark Core Device.

Step 5: Ideas, Feedback, Build Your Own, Help Me Make It Better - Cheaper.

I offer this to anyone for home and business but, I do have a Patent Pending on the Telcom Disconnect aspect and its only to prevent a big company from preventing the expansion of this device.  As well, a way for me to reinvest in the devices development as time goes on well in to the future.

I hope that others will use this to take their home off the GRID (AS I DO !!!) at those times where it is absolutely essential to have "ABSOLUTE PRIVACY WITH 100% CONVENIENCE" !

I am looking for ideas on the Control Board and what Opto Controllers to use to isolate the Telephone Relays 5 & 6 as they do have 50-90 vac (Normially.) / 200 vac (Phone Line Testing) going through them  that I want to keep separate from other components.

A better lay out and /or hybird laqyout for control board of 2N3904 = Relays 1,2, 3, 4, 7, & 8 ; and 4N25 circuit for Isolating Relays 7 & 8 would be helpful to me and others.

All Comments & Feedback are Welcome. 

Thanks for checking out my first Instructable and the Magic Stop.

Bobby Cooper /

123D Circuits Contest

Participated in the
123D Circuits Contest

Be the First to Share


    • Digital Fabrication Student Design Challenge

      Digital Fabrication Student Design Challenge
    • Leather Challenge

      Leather Challenge
    • Build a Tool Contest

      Build a Tool Contest



    8 years ago

    can you put a timer on so it cuts out after an hour and can you stop call to mobile phone


    Reply 8 years ago on Introduction

    I did a new Youtube Video on Timer Delay cutoff using 555 Timer; OptoCouper; Radio Shack Recorder / Player module. Timer drop out time is adjusted by R1 Resistor & C1 Capacitor values then added 50K Ohm Pot to allow adjustment of time between 10 - 22 seconds.


    Reply 8 years ago on Introduction

    Mobile phones do not use wires (they are radios) so they cannot be blocked by devices like this that switch a wired circuit on or off. It is illegal to operate a device that interferes with or blocks mobile phone transmissions as these devices are frequently used for emergency communications.

    Some newer cellphones (iPhone 4 and up, with IOS 7 as an example) have a "do not disturb" setting. Each phone would have to be set for this mode of operation and since no timer is currently provided, would later have to be reset for normal operation. Not very handy is it? It is still a manual operation.

    One thing is certain - technology will adapt and if enough people want a new feature, the cellphone makers will do their best to provide it.


    Reply 8 years ago on Introduction

    Very True ! Until the masses want and require an auto block with programmable settings it won't be possible.


    Reply 8 years ago on Introduction

    The Timer I am working on right now using a LM555 Timer Chip where you change Cap 1 & Resistor 1 to adjust the auto shutdown time. Its not complicated it just takes time to get the right combination. I am using a Radio Shack Voice Recorder 20 sec module so I have the auto cutoff at 22 seconds. Mobile phones are not possible to block. This device only works on a lined and VOIP Circuit. I use a Linksys PAPT2-NA VOIP Adapter with two phones acting as an intercom and they will place and receive phone calls via VOIP service if configured as such. CAUTION: You need a "UNLOCKED" Linksys PAPT2 VOIP Adapter to access the Management Panel via your web browser. In my Instructable there is a link to the Hack VOIP.


    8 years ago on Introduction

    In your introduction could you give more information on what this device is supposed to achomplish? I am mistified.


    Reply 8 years ago on Introduction

    Updated Intro with more specifics of how to use it. Let me know if you have any additional questions. Its the 1st of its kind and will need to have options like, Cutting on a child's access to telcom services until the home work is done or until their room is cleaned up. Its not just for going off the GRID. Bobby