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Builder's Guide for Camera Axe 5 Shield

A video demonstrating the assembly of a Camera Axe 5 Shield:

Required Tools

  • Soldering iron and solder
  • Wire cutters

Parts List

IMG_1984.jpg Picture of all the parts. A detailed list of parts follows.
IMG_1985.jpg Custom Circuit Board

Source files for the circuit board:
Schematic
Eagle Files
IMG_1986.jpg LCD and Backlight
IMG_1987.jpg 2 30 Ohm Resistor
IMG_1988.jpg 7 150 Ohm Resistor
IMG_1989.jpg 15 1K Ohm Resistor
IMG_1990.jpg 5 2.2K Ohm Resistor
IMG_1991.jpg 9 1 uF Capacitor
IMG_1992.jpg 8 Schottky Diode
IMG_1993.jpg 2 PNP Transistor
IMG_1994.jpg NPN Transistor
IMG_1996.jpg 9 Push Button
IMG_1997.jpg 2 16P DIP Socket
IMG_1998.jpg LTV-847 Optoisolator (Left)

74hc4050 Buffer Chip (Right)
IMG_2001.jpg 4 3.5 mm Jack
IMG_1999.jpg 2 Red/Green LED
IMG_2002.jpg Break Away Header Strip




Assembly Instructions

IMG_2003b.jpg Put the seven 150 ohm resistors into the circuit board as shown. Bend the wires sticking through the back outwards a little to hold them in place. Flip the board over and solder them into place. Then use wire cutters to clip off the extra wires sticking out the back.
IMG_2004b.jpg Put the fifteen 1K ohm resistors into the circuit board as shown. Bend the wires sticking through the back outwards a little to hold them in place. Flip the board over and solder them into place. Then use wire cutters to clip off the extra wires sticking out the back.
IMG_2005b.jpg Put the five 2.2K ohm resistors into the circuit board as shown. Bend the wires sticking through the back outwards a little to hold them in place. Flip the board over and solder them into place. Then use wire cutters to clip off the extra wires sticking out the back.
IMG_2006b.jpg Put the eight diodes into the circuit board as shown. Make sure the black band on the diode matches the band printed on the circuit board. Bend the wires sticking through the back outwards a little to hold them in place. Flip the board over and solder it into place. Then use wire cutters to clip off the extra wires sticking out the back.
IMG_2007b.jpg Put the two 30 ohm resistors into the circuit board as shown. Bend the wires sticking through the back outwards a little to hold them in place. Flip the board over and solder them into place. Then use wire cutters to clip off the extra wires sticking out the back.
IMG_2008b.jpg Put the two 16 pin sockets into the circuit board as shown. Make sure the notch on the socket matches the notch printed on the circuit board. The notch will help you align the microchips when you install it later. Flip the board over and hold the sockets, tack two corners pins for each socket to keep them in place then solder the rest of the pins.
IMG_2009b.jpg Put the nine 1 uF capacitors into the circuit board as shown. Bend the wires sticking through the back outwards a little to hold them in place. Flip the board over and solder them into place. Then use wire cutters to clip off the extra wires sticking out the back.
IMG_2010b.jpg There is a flat side to for these LEDs and that should line up with the flat line printed on the circuit board.

Put the two LEDs into the circuit board as shown. Bend the wires sticking through the back outwards a little to hold them in place. Flip the board over and solder them into place. Then use wire cutters to clip off the extra wires sticking out the back.
IMG_2011b.jpg Put the nine buttons into the circuit board as shown. They will snap into place when it is properly installed. Flip the board over and solder them into place.
IMG_2012b.jpg Put the two PNP transistors into the circuit board as shown. Make sure the flat sides of the transistors match the image on the board. Bend the wires sticking through the back outwards a little to hold them in place. Flip the board over and solder them into place. Then use wire cutters to clip off the extra wires sticking out the back.
IMG_2013b.jpg Put the one NPN transistor into the circuit board as shown. Make sure the flat side of the transistor match the image on the board. Bend the wires sticking through the back outwards a little to hold it in place. Flip the board over and solder it into place. Then use wire cutters to clip off the extra wires sticking out the back.
IMG_2014b.jpg Use your wire cutters to cut the breakaway strip into 2x 6 pin pieces and 2x 8 pin pieces. Then put one into the board as shown and solder a single pin. Repeat until all four pieces are in the board as shown. Now connect the Camera Axe Shield to your Arduino board so that you know the headers are lined up properly, and then solder the rest of the pins. Then gently disconnect the Arduino board from the Camera Axe Shield.
IMG_2015b.jpg Put the four 3.5mm jacks into the circuit board as shown. Flip the board over and solder them into place.
IMG_2017b.jpg Put the LTV-847 optoisolator and the 74hc4050 into their respective sockets. The circuit board has printed on it which one goes into each socket. Make sure you put the chips in the correct way with the notch on the chip lining up with the notch on the socket.
IMG_2018.jpg There are three pieces of clear film. Remove the one off the backlight and the one on the inside of the LCD screen. These need to be removed now because in the next step the LCD will be soldered to the backlight and these would get sandwiched between those pieced. I usually leave the plastic film on the top of the LED in place until assembly is complete to reduce fingerprints and scratching.
IMG_8552.jpg Assemble the backlight and LCD screen as shown.
IMG_2019b.jpg Put the backlight and LCD onto the circuit board. Make sure it's on the correct side by ensuring that it is on top of these words on the circuit board: "Covert These Words with the LCD". Solder a few pins on the corners to hold it in place and then solder the rest of the pins.
IMG_2020b.jpg Once the LCD/backlight are soldered to the circuit board, solder the 6 pins in this picture from the LCD to the backlight. These are the pins that provide power and ground to the backlight.

Congratulations you're done!
IMG_2024.jpg Plug your Arduino board into the Camera Axe Shield and you're done with Assembly.

You still need to program your Arduino with the Camera Axe software. Check out the Programming programming page about how to load the Camera Axe software.
Below are some pictures of a Camera Axe circuit board for your reference.

IMG_2021_s.jpg
Larger Version

IMG_2022_s.jpg
Larger Version

IMG_2023_s.jpg
Larger Version




Troubleshooting

Problem Possible Solution
Anything Try resetting the settings to the defaults by holding down the Activate button when the power is turned on. This resets the unit to the default settings and can fix various issues.
The backlight turns on and off randomly or when touched Double check to make sure that this step from the build guide was completed - "Once the LCD/backlight are soldered to the circuit board, solder the 6 pins in this picture from the LCD to the backlight. These are the pins that provide power and ground to the backlight." See above for image.
Not getting accurate readings when nothing is plugged into the second sensor port.

Readings fluctuate when nothing is plugged into a sensor port.

In the 4.0.1 software the sensor pins float instead of using the internal pull-up resistors in the Atmel chip. This basically means that if nothing is plugged into a sensor port the values will not be valid and will change sporadically.
Does not turn on unless you load the software. This is actually a problem with the Arduino Uno R2 boards. There is an easy fix by using a diode. Read this thread for full details.
Menu goes crazy and I can't do anything. The Arduino does not have a very good filter so instead of using a switching power supply I recommend using batteries or a linear power supply so the power is smoother. Also make sure you aren't touching any of the solder points on the board.