Instructions | Infinity Mirror Clock

1
Step 1
Electronics:
1. A Standalone Arduino: http://dushyant.ahuja.ws/2013/10/standalone-arduin...OR Arduino mini pro: http://www.aliexpress.com/item/10Pcs-Lot-Pro-Mini-...
2. RTC Module – DS1302: http://fabtolab.com/DS1302-RTC-module?search=rtc
3. LM2596 Step Down Adjustable Power Supply Module 1.3V-35V:http://cgi.ebay.in/ws/eBayISAPI.dll?ViewItem&item=...
4. 1m 60LEDs/M Addressable RGB LED Strip (WS2812B):http://www.aliexpress.com/item/1M-WS2812-WS2812B-6...
5. HC-05 Bluetooth module: http://www.aliexpress.com/item/RS232-TTL-LC-05-Wir...
6. IR Proximity Sensor: http://www.instructables.com/id/Simple-IR-proximit...4 IR LEDs; 1 IR LED detector: http://www.evelta.com/industrial-control/sensors/5...
7. Touch Pad: http://www.aliexpress.com/item/Touch-Pad-Brick-Sen...
8. 9V – 2A Adapter
9. CP2102 USB-to-TTL (the RST pin on the CP2102 is not for resetting the arduino – you have to solder a wire to the DTR pad on the PCB – which sends a reset signal to program the arduino. This has to be connected to the DTR pin on the Arduino
2
Step 2
System Design:
The circuit is very simple:

LED Strip - Connect power to the LM2596 Step Down Adjustable Power Supply Module - ensure you adjust the pot so that the output is 5V; Connect the ground to the common ground; Connect data to pin D5 of the Arduino
Touch Sensor - data to pin D2 of Arduino
RTC Module - SDA and SCL to the A4 and A5 of the Arduino respectively
Bluetooth Module - Connect RX to Arduino's TX and TX to Arduino's RX. You will have to break-out pin 32 on the module to the DTR pin on the Arduino (This allows you to program the Arduino over bluetooth)
IR Proximity Sensor - create the sensor as per this instructable:http://www.instructables.com/id/Simple-IR-proximit... - connect the photo-diode to A1 (A0 on the instructable schematic) and the IR LEDs to D13 (D2 on the instructable schematic)
Connect the Power 9V 2A Power supply to the input of the 7805 and the LM2596
To setup the bluetooth programming circuit, please follow this link:http://makezine.com/projects/diy-arduino-bluetooth...
3
Step 3
The Code:
This clock uses the following libraries (and all thanks to the authors of these libraries):
- RTCLib Arduino Library: https://github.com/adafruit/RTClib
- FastLED Arduino Library v2.1: http://fastled.io/https://github.com/FastLED/FastLED/tree/FastLED2.1
- SerialCommand Arduino Library:https://github.com/scogswell/ArduinoSerialCommand...
- TimerOne Arduino Library:https://github.com/scogswell/ArduinoSerialCommand...
The latest version of the code can be downloaded from the project github:https://github.com/dushyantahuja/Smart-Infinity-Mi...
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Step 4
The clock is primarily made up of the following:

2 pieces of 8mm plywood (600mm x 600mm) - needs to be cut as per the schematic above
1 piece of 18mm block-board (600mm x 600mm) - needs to be cut as per the schematic above. Please be careful with the circle - the circumference needs to be exactly 1000mm so that the 60 LEDs fit properly. I got it cut from a carpenter and he rounded up the radius from 159.23 to 160 - so I had to use double sided foam tape to get the LEDs to fit properly
1 circular 6mm mirror - 400mm dia
1 circular 6mm glass - 400mm dia. You need to put silver sun-control film on this - you can get this either from auto-accessories vendors or from window / glazing installers. 3M has a very good film that you should be able to get from 3M dealers
1 small round steel plate (100mm dia)
N45 Silicon adhesive
Black Paint
Black Vinyl - you can get this from auto-accessories vendors or sticker manufacturers. We used a slightly sparkling matt black - similar to this:http://www.ebay.in/itm/Brilliant-Diamond-Black-Pea...
Steps:

Join the pieces of plywood and block-board together, keeping the block-board in the center - you should use Fevicol (or similar) as well as nail it down
Paint the interior portion Black
Stick the LED strip to the interior of the circular cutout in the block-board. Ensure that the first LED is at the 12 o' clock position
Wire up the Arduino as per the circuit in the previous step and hot-glue it to the square cutout
Mount the touch-sensor on one of the sides using hot-glue (you will have to drill the block-board slightly so that the wires fit and don't show)
Stick the mirror on the back side (facing up) using N45 silicon glue
Stick the steel plate at the center of the mirror
Stick the glass on the front side (film inside) using N45 silicon glue
Test the circuit by plugging it in
Troubleshoot :-)
Fix the black vinyl on the front side - you will have to cut a circle in the center (~380 mm dia) so that the joint between the glass and the wood gets hidden.
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Step 5
The costs were roughly as follows:
1. Wood Frame - INR 1200 for the wood, INR 500 to get it cut and INR 500 to get it assembled and straightened
2. LED Strip - INR 700 for 1m
3. Standalone Arduino - INR 200
4. Bluetooth Module - INR 500
5. RTC Module - INR 155
6. LM2596 Module - INR 150
7. IR LEDs - INR 50
8. Vinyl - INR 1000
9. Shipping, Veroboard, hot glue, wires, etc - INR 400
10. Touch Sensor - INR 250
All in all ~INR 5,500 (~ USD 95) - not counting my time :-)

Infinity Mirror Clock

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