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SliderSwitcher
Digital copies of color slides can be made without the
SliderSwitcher
by manually advancing the projector and
releasing the camera shutter. To automate the process so
entire trays of slides can be processed unattended, you can
use the remote control capabilities of the camera and
projector. You will need cables that plug into the projector
remote port and the camera remote port or remote
controls for each.
The
SliderSwitcher
will complete the circuit that causes the
projector to advance one slide or the camera to take a
photo. Wires from the two relays in the
SliderSwitcher
must be connected to the remotes or remote cables for the
camera and projector. Relay #1 (the first to blink) will
operate the camera and the other operates the projector.
To test the
SliderSwitcher
itself, plug the Arduino Nano into power using the included phone charger and USB cable or
power it from a computer USB port. When the Arduino is powered, red LEDs on both the Arduino and the relay module
(inside the red housing) should be lit. Red LEDs on the relay module should blink in turn and simultaneously a blue LED
on the Arduino should blink. If LEDS are not blinking, check the wired connections. With each blink, one relay is
completing a circuit for 1/10 of a second. Your job is to connect the first relay to the camera and the second relay to the
projector so the circuit completions trigger the desired action.
The terminal block for connections to the camera and projector is hidden in the enclosure (to protect you from shocks
from the projector). To access the blocks the relay module and Nano must be unscrewed and removed. Make sure the
connected projector is turned off when accessing the block.
The sketch loaded on the Arduino Nano is here:
https://create.arduino.cc/editor/cfastie/7574b135-027f-4461-a4bd-
. You will need an account, but at that site you should be able to edit the sketch and download
the new version directly onto your
SliderSwitcher
.
A USB data cable (for PCs: USB A male to USB mini B) is required for loading a new sketch (not included, the USB cable
with the
SliderSwitcher
is for power only). The online Arduino editor will detect when the Arduino is connected via USB
to your computer. At the Arduino editor y
ou must select “Arduino Nano” and then “ATmega168”
(the included Nano is
the unusual ATmega168 version with half the memory of the standard 328p chip).
