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Step 5Assemble control box and battery box
The battery box is the smaller box to the left of the control box, with the screws facing out so if the 9volt were to drain it could be changed without prying open the box!!!
(hot glue the battery box to the control box, drill a small hole between the 2 boxes for the 2 wires)
sorry for not having detailed pics but I forgot to take some during construction (gimme a break this is my first instructable)
the best way to do this is to cut 14 long pieces of wire (mine were arm length and just barely long enough) and label them on both ends with masking tape and marker as follows:
control box end of wire () ATmega328 end of wire
5v+ () 5v+
5v- () 5v-
9v+ () 9v+
9v- () 9v-
potentiometer () analog 3
button () digital 6
speaker () digital 5
LCD pin 4 () digital 12
LCD pin 5 () digital 11
LCD pin 6 () digital 2
LCD pin 11 () digital 7
LCD pin 12 () digital 8
LCD pin 13 () digital 9
LCD pin 14 () digital 10
install the components in the control box and solder all the labeled wires, solder the 5+ and 5- wires to ALL power and grounds! (+ to pin 2 and 15 on LCD, to one lead on button, one lead on both potentiometers, and pos lead on led, - to neg led lead, neg potentiometer leads, and pin 1 and 16 on LCD) dont forget to solder the smaller 10k pot to the lcd pin 3 for the contrast. Solder the battery strap ground to the 9v- wire, positive from the battery to the main power switch, and from the switch to the 9v+ wire. feed all 14 wires through a hole drilled in the lid of the box, dont screw the control box down yet, we will need to adjust the contrast on the lcd first, I hot glued the contrast pot to the inside of the control box as well as the speaker, and lcd.
(hot glue the battery box to the control box, drill a small hole between the 2 boxes for the 2 wires)
sorry for not having detailed pics but I forgot to take some during construction (gimme a break this is my first instructable)
the best way to do this is to cut 14 long pieces of wire (mine were arm length and just barely long enough) and label them on both ends with masking tape and marker as follows:
control box end of wire () ATmega328 end of wire
5v+ () 5v+
5v- () 5v-
9v+ () 9v+
9v- () 9v-
potentiometer () analog 3
button () digital 6
speaker () digital 5
LCD pin 4 () digital 12
LCD pin 5 () digital 11
LCD pin 6 () digital 2
LCD pin 11 () digital 7
LCD pin 12 () digital 8
LCD pin 13 () digital 9
LCD pin 14 () digital 10
install the components in the control box and solder all the labeled wires, solder the 5+ and 5- wires to ALL power and grounds! (+ to pin 2 and 15 on LCD, to one lead on button, one lead on both potentiometers, and pos lead on led, - to neg led lead, neg potentiometer leads, and pin 1 and 16 on LCD) dont forget to solder the smaller 10k pot to the lcd pin 3 for the contrast. Solder the battery strap ground to the 9v- wire, positive from the battery to the main power switch, and from the switch to the 9v+ wire. feed all 14 wires through a hole drilled in the lid of the box, dont screw the control box down yet, we will need to adjust the contrast on the lcd first, I hot glued the contrast pot to the inside of the control box as well as the speaker, and lcd.
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