This is going to be snappy as I have lots to do and don't want to bore Russell. So from the top then!
1) Insert MSGEQ7
2) Connect Caps (Left 33pf, right 100nf). The left wire of thee right cap goes to Ground Pin 6 of the MSGEQ7. The 33pf's right wire connects to Oscillator Pin 8 (connection will be broken with resistor)
3) Connect 3rd Cap, which sits "over" the second cap. The left wire goes to Input Pin 5
4) Insert 220K resistor between 33pf and Pin 8
5) Insert second 100nf cap. Pin 1 Positive and Pin 2 Negative
6) Connect Positive and Negative Pins to the power rail via Cap.
7) Next is soldiering two jump wires the positive and ground connection on this little Stereo Jack Input.
8) You see 5 Pins, Ground is the centre pin, closest to the input. The two at the top here (actually on the right) are Negative, and the bottom two are positive. TRS stands for Tip, Ring, Sleeve. Tip is positive, Ring is Negative and Sleeve is ground.
9) Here is the Input with jumpers soldiered on. (And a slightly burnt desk :/)
10) Here is the TRS taped down to the BB with leccy tape. The positive connects through Cap 2 to Input Pin 5, Ground to the Ground Rail.
11) 3 N Channel MOSFET Transistors are added to the board. N Channels have three pins, Gate, Drain and Source from left to right.
12) Each source Pin is connected to the ground top rail of the breadboard.
13) The 220k resistor is now connected to the bottom power rail - live to left, ground to right.
14) Here is another angle to show the exact connection, the ground wire connects to the 33pf capacitor left wire, not the resistor.
15) Here we connect the ground of the MSGEQ7 to the bottom ground rail.
16) Next I insert the 1K potentionmeter and 10K resistor. They are not connected.
17) Here, the ground rails are connected together, a button is attached via soldiered jump wires. The live rail is connected to the positive of the button, the negative back to above the 10K resistor. I have also attached the bottom live rail to the right pin of the potentiometer.
18) Here, I attach a jumper to the central pin of the potentiometer for data transfer to the arduino, I have also connected the jumper from the left of the 10K resistor to the bottom ground rail.
19) Here the left pin of the potentiometer is connected to the bottom ground rail.
20) Here are the connections for the arduino attached to the gate pins of the MOSFETs
21) Finally, I attach the live 12v top rail connector which feeds the LED strip power.
So as far as I am aware, that should be the breadboard and circuit good to go, next post is about all the connections from the Arduino to the Breadboard, there will be a tutorial just like this for that too. Hopefully these can go towards helping people do this in the future too! Cheers
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ReplyDeleteCheck your wiring with regards to pin 8 of the MSGEQ7, I think you may have misread my fritzing.
ReplyDeleteCheck this post: http://nuewire.com/info-archive/msgeq7-by-j-skoba/
In particular, this diagram: http://nuewire.com/wp-content/uploads/2011/07/schem1.png
Lays out how the MSGEQ7 should be wired up more clearly than my fritzing diagram.
Whenever you're having trouble with a particular component in a circuit, it's generally a good idea to reference the datasheet and example circuits.
That makes sense about the power for sure, I will make sure to get the connection reattached asap.
ReplyDeleteI terms of the circuit around pin 8, I have read that post as well in my research. The 5v positive runs through the 220k resistor, then down into pin 8. Behind it is the capacitor hooked back to the ground base rail. Is it the the cap is the wrong way round? I have been reading and I thought these small ones didnt have a polarity? Looking between your fritzing and JSkoba's diagram I really cantfigure out where I have gone wrong. Switching the cap round is the only thing I can think of tbh. Pretty stuck!