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Wearable LED Controller

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Wearable LED Controller
Wearable LED Controller
Labs Project
Based on a Labs project | September 2017 | Find it here
In the animal world, the males of the species don't have it easy finding a partner – they sometimes have to prove in fierce (mock) fights with competitors who is the strongest, or need to show their prettiest side and/or need to sing as beautiful as possible… In comparison, Homo Sapiens, and then particularly Homo Electronicus, has it much easier these days – he calls in the support of his semiconductor friends.

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Materials

Gerber file

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PCB

Component list

Component list
Resistors (all SMD0805, 5%, 0.1 W)
R1,R2 = 22 Ohm
R3,R5,R9,R10 = 10 kOhm
R4 = 330 Ohm
R6 = 220 Ohm
R7 = 680 kOhm
R8 = 220 kOhm
Capacitors
C1,C2 = 47 pF, 50 V,C0G/NP0, SMD0805
C3 = 100 µF/16 V, tantalum, SMD2312
C4 = 100 nF, 50 V, X7R, SMD0805
C5,C6 = 22 pF, 50 V, C0G/NP0, SMD0805
C7 = 470 µF/10 V, 0,16 Ohm, SMD electrolytic
C8,C9 = 10 µF/16 V, tantalum, SMD1206
C10 = 1 µF, 50 V, ±10%, X5R, MC Series
Inductors
L1 = 4.7 µH, 1,72 A, 1,65 A, shielded, 0.082 Ohm, WE-TPC Series
Semiconductors
IC1 = Atmega32U4-AUR, 16 MHz, 32 kB, 25 kB, 44-pin
IC2 = MCP1642B-ADJI/MS, 650mV-5.5V in, 1.8V-5,5V out, 0.8 A out
LED1 = LED low power, green, SMD, 20 mA, 2.1 V
Miscellaneous
X1 = crystal 16 MHz, 30 ppm, 18 pF, SMD 5 x 3,2 mm
S1,S2,S3 = pushbutton, not illuminated, circuit board mount
K1 = micro-USB connector type B, USB 2.0, female
K2 = 3-way circuit board terminal block, pitch 0.2”
K3 = pin header 6-way, 2 rows, pitch 0.1”
S4,S5 = slide switch SPDT, on-on, through-hole
BAT = battery holder, AA x 2, through-hole

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