2014-11-01 (Sa) Arduino Laser Tag

New screw top jars were purchased from a craft store to become clear enclosures for laser tag receivers. A 5/32" hole was drilled in the center of the cap to fit a #8 bolt. Other components were gathered. The previous model used a high intensity red LED to indicate hits but in this version it has been replaced with a NeoPixel so any color can be used to indicate team color and color-coded hits.

@ Neopixel
@ TSOP4856
@ Brass #8 nuts
1 @ Steel #8 nut
@ 10uF capacitor with radial leads
1 @ 100Ohm resistor
@ 1" Nylon bolt with thumb screw knob
1 @ Screw top jar
1 @ RJ11 telephone cord with jack with at least 3" of wire

 5/32" hole in jar lid

Components to make 1 receiver

The three brass nuts were put on a long #8 bolt and solder was applied to three sides of each hex nut. A TSOP4856 was soldered to the spaced-out brass nuts which had a gap between each. The loads of the TSOP4856 were trimmed to allow them to curve around the nuts once assembled. All three were soldered with the same orientation to they are electrically parallel.

Solder on three sides of three nuts

 Soldered nuts from another angle

IR sensor soldered to nuts

IR sensors trimmed

Sensors soldered to nuts

Another angle

Another hole was drilled in the jar lid large enough to fit the telephone cord. Once inserted through the hole the phone cord sheath was stripped away 1/2" (12mm) and the tips of the wire were stripped 1/8" (5mm) and tinned.

 Hole for phone cord

Phone cord inserted, stripped, and tinned

The 10uF capacitor was soldered between the Vcc and GND terminals of the TSOP4856 leads. This capacitor was to filter power which may pick up interference between the sensor and the controls model. The capacitor was polarity sensitive so care was taken to attach the negative terminal to the center pin of the TSOP4856.

 Capacitor installed

Another angle

The 100 Ohm resistor was soldered to the end of the yellow phone wire and the other end was soldered to the Vcc terminal of the TSOP4856 array. The red phone wire was soldered to the signal wire of the TSOP4856 array. The black wire was soldered to the IN terminal of the NeoPixel. The positive and negative terminals of the NeoPixel were soldered to the Vcc and GND terminals of the TSOP4856 array.

 Resistor in line with power wire

Red wire on signal wire from TSOP4856 array

 NeoPixel with unsoldered power leads

NeoPixel bent into position at end of bolts

The TSOP4856 leads were bent in order to make them sit closer to the brass nuts and reduce the overall diameter. This was necessary to fit everything inside the clear jar. The nylon bolt was inserted through the jar lid and a steel nut was threaded on but not tightened. The array of components was eased onto he bolt which was spun to move the array down. Once the bolts were threaded into all three nuts the steel washer was sighted to the base of the lid with pliers.

Component array held by nylon bolt

Hot glue was applied to the entry point of the phone cord. The jar was screwed onto the lid to complete the receiver.

 Hot glue holding phone cord

Completed receiver module

Another angle

To do:
  • Reprogram for NeoPixels and color screen
  • Design case for processor and attachments
  • Build two test units
  • Make instructions for all parts

Journal Page 1

Journal Page 2

Journal Page 3

The rest of the posts for this project have been arranged by date.

A list showing of all the final posts of COMPLETED projects.

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2014-10-28 (Tu)