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SCORPIO TECHNOLOGY SOLAR NIGHT LIGHT Manual

Protoboard project
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SOLAR NIGHT LIGHT – PROTOBOARD PROJECT
DESCRIPTION
The SOLAR NIGHT LIGHT is a simple project that turns on
3 LEDs when it gets dark. It consists of 3 parts, the light
sensing protoboard circuit, 3 x AA rechargeable Nickel
Metal Hydride Batteries to power the protoboard and a 4
volt Solar Panel to charge the batteries during the day.

SECTION 1: COMPONENTS REQUIRED

COMPONENTS REQUIRED
The following components are required and are available from Scorpio Technology
(item codes in brackets). If you wish to order a pack of 10 sets of components you
can do so by ordering NIGHTLIGHT10
Before starting we suggest that you check you have all the components using the
checklist below – tick off each component as you identify it.
 1 x Protoboard
 1 x 3 x AA Battery Holder with switch
 3 x LED White clear
 1 x Diode – 1N5817
 1 x Transistor – S9011
 1 x Transistor – SS8050
 1 x Trimpot 100K Ohm
 1 x Resistor – 680 Ohm (Bl-Gy-Br-G)
 2 x Resistor – 1K Ohm (Br-Blk-R-G)
 3 x Resistor – 18 Ohm (Br-Gy-Blk-G)
 1 x Light Dependent Resistor
 1 x Solar panel No. 17
1.2 ADDITIONAL REQUIREMENTS
The following material is to be supplied by the student / designer:
 Hookup wire in red and black (WIREHU10R and WIREHU10BL)
 Length Tinned copper wire (for wire links)
 The Nickel Metal Hydride Batteries suited to solar panel charging are available
from Bunnings: Solar Magic AA 2000maAh Ni-MH Rechargeable Batteries - 4 Pack
I/N:4352433
 Material / parts for the housing and mounting of the circuit and battery holder.
WARNING: Do NOT use Lithium Rechargeable batteries
1.3 TOOLS REQUIRED
The following tools are required. A number of these are available from Scorpio
Technology, and can be ordered separately if required (item codes in brackets):
 Soldering Iron: a good quality soldering iron, with a fine tip (SOLDIRN) and
Soldering Iron Stand (SOLDIRNSTD) or Soldering Station (SOLDSTN)
 Solder: the use of 0.71mm 60/40 solder is recommended (SOLD500)
 Assorted hand tools – depending on the choice of materials to be used
SCORPIO TECHNOLOGY
Issued:7 February 2024
A.B.N. 34 056 661 422
www.scorpiotechnology.com.au
1
(TCW)
VICTORIA PTY. LTD.
sales@scorpiotechnology.com.au
(PCB-PROTO)
(BH3AAF)
(LEDSCW5)
(DIO1N5817)
(TRAN9011)
(TRANSS8050P)
(TRIM100)
(RES680)
(RES1K)
(RES18)
(LDR)
(SOLAR17)

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Summary of Contents for SCORPIO TECHNOLOGY SOLAR NIGHT LIGHT

  • Page 1: Section 1: Components Required

    SOLAR NIGHT LIGHT – PROTOBOARD PROJECT DESCRIPTION The SOLAR NIGHT LIGHT is a simple project that turns on 3 LEDs when it gets dark. It consists of 3 parts, the light sensing protoboard circuit, 3 x AA rechargeable Nickel Metal Hydride Batteries to power the protoboard and a 4 volt Solar Panel to charge the batteries during the day.

  • Page 2: Section 2: Design

    SECTION 2: DESIGN The designer has to make a variety of decisions and determine the following:  How the SOLAR NIGHT LIGHT will be used.  The size, design and shape of the housing  The type of material to be used for the project.

  • Page 3: Section 4: Assembling The Protoboard

     Mount the Light Dependant Resistor (LDR) This type of resistor’s, resistance is controlled by light intensity. Bright light gives low resistance while darkness gives very high resistance. The LDR is the sensor that uses light intensity to control the operation of the circuit.
  • Page 4 Begin with the components that sit lowest on the Protoboard. In this case begin with the wire links. PROTOBOARD LAYOUT Carefully follow the layout of the following picture:  Every component and wire MUST be in the exact location shown. ...
  • Page 5 COMPONENTS Resistor – 1K Ohm: R1- (C1-C5), R2-(J4-F4) Resistor – 680 Ohm: R3-(E10-A10) Resistor – 18 Ohm: R4-(N17-J17), R5-(N19-J19), R6-(N21-K21) Diode D1: (N24-K24) Trimpot: (J1-L2-J3), T1-(E4-D5-E6), T2-(D13-E14-D15) WIRE LINKS N2-M2, N3-M3, N4-M4, I1-F1, I6-F6, K6-K10, I10-F10, J10-J14, I14-F14, G15-F15, B13-A13 COMPONENT WIRES LDR wires: A1 and B1 to LDR’s legs,...

  • Page 6: Section 5: Troubleshooting

     Use a Transistor Tester to check that the Transistors are operating correctly. Replace the Transistor if the transistor Tester shows it is faulty.  If this still does not enable the Solar Night Light to operate, check the charge of the batteries.
  • Page 7 REMEMBER – Dark – High Resistance Light – Low Resistance The LDR is mounted in a clear resin block with 2 leads. Like most resistors, it does not matter which way round an LDR is mounted in a circuit. If one of the resistors of the potential divider is replaced with an LDR, it is like having a variable resistor in the circuit, which alters its value when the light intensity changes.
  • Page 8 The Nickel Metal Hydride Batteries from Bunnings are specially designed for charging from Solar Panels. The connecting wires and components should be positioned according to the wiring diagram shown on page 5.

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