Elenco Deluxe Snap Rover&reg - Manual (Page 5)

(Part designs are subject to change without notice).
The base grid is a platform for mounting parts and wires. It
functions like the printed circuit boards found in most electronic
products, or like how the walls are used for mounting the electrical
wiring in your home.
The blue snap wires are just wires used to connect other
components, they are used to transport electricity and do not affect
circuit performance. They come in different lengths to allow orderly
arrangement of connections on the base grid.
The red, black, white, orange, yellow, green, gray, and purple
jumper wires make flexible connections for times when using the
snap wires would be difficult. They also are used to make
connections off the base grid. The different colored wires all work
the same way, and are interchangeable. Wires transport electricity
just like pipes are used to transport water.
The batteries (in the Rover body) produce an electrical voltage
using a chemical reaction. This “voltage” can be thought of as
electrical pressure, pushing electrical “current” through a circuit just
like a pump pushes water through pipes. This voltage is much lower
and much safer than that used in your house wiring. Using more
batteries increases the “pressure” and so more electricity flows.
The slide switch (S1) connects (ON) or disconnects (OFF) the
wires in a circuit. When ON it has no effect on circuit performance.
It turns on electricity just like a faucet turns on water from a pipe.
The press switch (S2) connects (pressed) or disconnects (not
pressed) the wires in a circuit, just like the slide switch does.
Resistors, such as the 100 Ω (R1), 1K Ω (R2), 10K Ω (R4), and
100K Ω (R5) resistors , “resist” the flow of electricity and are used
to control or limit the electricity in a circuit. Note that “K” means
1000, so R4 is really 10,000
Ω . Increasing circuit resistance
reduces the flow of electricity.
The LED (D4) is a light emitting diode, and may be thought of as a
special one-way light bulb. In the “forward” direction (indicated by
the “arrow” in the symbol) electricity flows if the voltage exceeds a
turn-on threshold (about 3V); brightness then increases. A high
current will burn out the LED, so the current must be limited by
other components in the circuit. LEDs block electricity in the
“reverse” direction.
The 1 μ F (C7) and 100 μ F (C4N) capacitors are components that
can store electrical pressure (voltage) for periods of time, higher
values have more storage. Because of this storage ability they
block unchanging voltage signals and pass fast changing voltages.
Capacitors are used for filtering and delay circuits.
The Deluxe Receiver (RX2) is a complex module containing a
radio receiver circuit, a specialized radio decoder integrated circuit,
and other supporting components. It includes resistors, capacitors,
inductors, and transistors that are always needed together. This
was done to simplify the connections you need to make, otherwise
this circuitry would not fit on the base grid. A description for this
module is given here for those interested, see Project #1 for a
connection example:
(–)
(+)
Deluxe Receiver:
(+) - power from batteries
(–) - power return to batteries
LBUT - left button function (active low)
RBUT - right button function (active low)
L – - left backward motor drive
L+ - left forward motor drive
R – - right backward motor drive
R+ - right forward motor drive
ABC switch - selects radio channel
-4-
About Your Snap Circuits ® Parts
L–
(+)
(+)
L+
R–
R+
LBUT
RBUT
!
Only connect this part as
shown in the projects!
Warning to Snap Circuits ® owners: Do not use parts from other Snap Circuits ® sets with this kit. The Snap Rover ® uses higher
voltage which could damage those parts. Page 44 and our website www.snapcircuits.net has approved circuits that you can use.
!