Make: DIYSUPERHUMAN
a
d
m
l
n
o
g
u
v
w
f
e
i
k
b
h
p
q
r
s
t
cj
a. 1μF
b. 1μF
c. 1μF
d. 1μF
e. 1μF
f. 0.1μF
g. 1μF
h. 160kΩ
i. 16kΩ
j. 750kΩ
k. 160kΩ
l. 750kΩ
m. 16kΩ
n. 110kΩ
o. 110kΩ
p. 160kΩ
q. 200Ω
r. 200Ω
s. 200Ω
t. 200Ω
u. 100kΩ pot
v. 100kΩ pot
w. 10kΩ
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
ABCDEFGHIJ KLMNOPQRS
A
B
KEY
Pink: + 3.3V
Gray: ground
Red: wire to power
Light blue: wire to ground
Green: wire
Purple: to battery ground
Brown: to crank ground
Dark blue: to switch
7 6 5 4 3 2 1
Op-amp1 Op-amp4
Op-amp2 Op-amp3
LM324
8
9
10
11
12
13
14
VSensor
Vref = Vdd/2 = 1.65V
750K
3. 3
750K
3. 3
3. 3
3. 3
110K
1μf 160K
16K
1μf 160K
16K
VBandPass
Op-amp1
Op-amp3 Vref
160K
Vref
Op-amp2
1μf
110K
VLowPass
1μf
0.1μf
1μf
C
Garrick Orchard; Damien Scogin (C)
72 Make: makezine.com/29
