MadLab FUNKY DRUMMER User manual

C1
(10u)
Battery
snap www.madlab.org
©MadLab®2017
FUNKY DRUMMER
Identify the different components using the spotter chart.
1
Fit and solder all the resistors (R1 to R15) to the circuit board. Identify the
resistors by the coloured stripes on the body. They can be fitted either way
around.
2
Solder the light-dependent resistors (LDR1 to LDR4). Be careful with
these components as excessive heat can melt the plastic.
5
Solder the chip sockets (IC1 and IC2) matching the notch in the socket to
the notch on the board. Do not solder the chips directly to the board.
3
Solder the pushbuttons (S1 to S6) either way around.
7
Solder the transistor (TR1) matching the half-circle shape of the transistor
to the half-circle shape on the board.
8
Fit and solder the electrolytic capacitors (C1, C2, C3 and C8) to the board
putting the shorter leg into the hole with the – sign. The shorter leg also
has a stripe on the side of the body. Also solder the tantalum capacitor
(C6) so that the shorter leg is by the – sign. Fit and solder the remaining
ceramic (C4, C5 and C9) and polyester (C7) capacitors either way around.
4
Solder the jack socket (AUDIO), first cutting off the five small plastic
lugs on the underside so it fits flush on the board.
10
Bend the legs of the regulator (REG) at right angles and solder it such
that the metal heatsink is flat on the board and the side with the writing
is facing upwards.
9
programmable rhythm machine with 40 drum sounds
MLP114 1/7/17
REG
(LD33V)
IC2 socket
continued overleaf
Solder the light (LED) to the board putting the shorter leg into the hole
with the line. The shorter leg also has a flattened edge on the rim.
6
IC2
(dsPIC33F)
R9
(10k)
(brown, black, orange, gold)
R1
(0R)
(black)
R15
(0R)
(black)
R10
(0R)
(black)
R4
(100R)
(brown, black, brown, gold)
R2
(10k)
(brown, black, orange, gold)
R3
(10k)
(brown, black, orange, gold)
R8
(1R)
(brown, black, gold, gold)
R11
(150k)
(brown, green, yellow, gold)
R12
(150k)
(brown, green, yellow, gold)
R13
(150k)
(brown, green, yellow, gold)
R14
(150k)
(brown, green, yellow, gold)
R5
(470R)
(yellow, purple, brown, gold)
R6
(47R)
(yellow, purple, black, gold)
R7
(150R)
(brown, green, brown, gold)
C8
(220u)
C3
(220u)
C7
(100n)
Jack socket
IC1 socket
IC1
(MCP4921)
LED
(red)
LDR1 LDR2 LDR3 LDR4
TR1
(ZTX689B)
11 Solder the power socket (POWER). Optionally also fit the PP3 battery
snap (BATTERY). Push the battery snap leads up through the larger
holes in the board from the metal side of the board. Fit the metal tip of
the red lead into the BATT + hole and the metal tip of the black lead
into the BATT – hole. Solder the metal tips to the tracks on the board
then pull the wire loops back.
C2
(100u)
Power socket
C6
(10u)
S2S1 S3 S4 S5 S6
C9
(100n)
C4
(100n)
C5
(100n)
Carefully bend the legs of the chips inwards a little with your fingers.
Fit the chips into their sockets matching the small notch in the chip to
the notch in the socket.
12
Attach rubber feet to the corners of the board.
13

HOW TO USE
A particular drum sound can be associated with each of the four touch pads.
Pressing the associated pushbutton (S1 to S4) selects a touch pad (LDR1 to
LDR4) to change. Then pressing the +or –pushbuttons selects a particular drum,
stepping forwards or backwards through the 40 available drum sounds. Finally
pressing the same pushbutton again fixes the association.
Pressing CONTROL + VOLUME increases the volume, SHIFT + VOLUME
decreases the volume. Pressing CONTROL + SHIFT + VOLUME toggles gain x 2
(double output voltage).
Settings are saved to non-volatile memory. CONTROL + SHIFT + RESET restores
all settings to the factory defaults. Note that user rhythms are not restored though.
Funky Drummer can output an audio signal on its jack socket which has a
maximum peak-to-peak of about 2 volts. This is more than capable of producing a
loud sound in a pair of 32-ohm impedance headphones.
The sensitivity of the touch pads can be adjusted by pressing and holding down
one of the pushbuttons during power up (until the self-test has completed). Six
settings are available and are suitable for different ambient light levels.
Either connect a mains power supply (5-9V regulated dc, 300mA,
centre +) to the power socket or a battery to the battery snap. The
software includes a power-on self-test. The LED should flash twice if
Funky Drummer is working correctly.
14
Connect headphones or powered speakers (with a 3.5mm jack plug) to
the audio output socket. Tap the touch pads (LDRs) and you should
hear different drum sounds.
15
CONTROL + SHIFT + DEMO plays all the preset rhythms in turn. Any pad
pushbutton (S1 to S4) exits demo mode.
Record Mode
CONTROL or SHIFT + RECORD selects record mode and allows the user rhythms
to be edited.
The LED flashes at the start of the rhythm loop and a metronome click sounds on
each beat of 4 beats.
The touch pads record drum sounds at the current point in the rhythm loop.
Recording is at one quarter speed, and a maximum of 64 drums events per beat
can be recorded.
Pressing one of the pad pushbuttons (S1 to S4) exits record mode and stores the
rhythm as one of the 4 user rhythms.
Rhythm Mode
Pressing CONTROL + RHYTHM plays the current rhythm or selects the next
rhythm if a rhythm is already playing. Pressing SHIFT + RHYTHM plays the
current rhythm or selects the previous rhythm if a rhythm is already playing. 12
preset rhythms and 4 user rhythms are available.
The LED flashes at the start of the rhythm loop. Pressing any pad pushbutton (S1
to S4) stops the rhythm playing.
CONTROL + TEMPO increases the rhythm tempo (with auto repeat), SHIFT +
TEMPO decreases the tempo (with auto repeat).
8beat #1 8beat #2 8beat #3 8beat #4
jazz shuffle reggae samba
disco #1 disco #2 elec pop pattern #1
user #1 user #2 user #3 user #4
Table 2 - rhythms
closed hihat open hihat high tom #1 high tom #2 high tom #3
low tom #1 low tom #2 snare #1 snare #2 snare #3
snare #4 bass #1 bass #2 bass #3 high conga
low conga high bongo low bongo high agogo low agogo
crash cymbal taiko timpani timbale china cymbal
cabasa brush #1 brush #2 snap clap
cowbell triangle gunshot scratch whistle
kalimba rimshot chicken bubble quijada
Table 1 - drums