OSH Park
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emitter sub-circuit
by
TEMdude.
2
layer board of
0.36x0.50
inches
(9.17x12.70
mm).
Shared on
November 16th, 2016 14:11.
Wearable bluetooth-enabled Arduino Pulse Oximeter. (hackaday.io/project/7798)
photo detector sub-circuit
by
TEMdude.
2
layer board of
0.49x0.45
inches
(12.45x11.46
mm).
Shared on
November 16th, 2016 14:11.
Wearable bluetooth-enabled Arduino Pulse Oximeter. (hackaday.io/project/7798)
5V 1000mA Submodule
by
TimKostka.
2
layer board of
0.40x0.35
inches
(10.16x8.92
mm).
Shared on
November 16th, 2016 02:37.
An incredibly small 5V switching regulator module!
Specifications:
Board size: 0.40"x0.35"
Input: 6-20V (3-4S LiPo)
Output: 5V @ up to 1A
Efficiency: 85.35% @ 1A (measured)
Components:
U1: LM53601LQDSXTQ1
L1: DFE252012F-4R7M=P2
C6, C7: GRM21BR71A106KA73L
C3: 885012205067
C2: GRM155R70J105KA12J
C8: GRM31CR71E106KA12L
C1, C4: GRM155R71H104KE14D
Cost:
Boards: $0.70 for 3 at OshPark
Components: $6.66 at Mouser plus S/H (that’s a bit ominous…)
Total cost: $7.36 for 1 module
Assuming you can solder it all yourself…
Not the cheapest, but probably the smallest!
ProMini-Node-v1.0.kicad_pcb
by
dlarue.
2
layer board of
1.38x2.59
inches
(34.98x65.68
mm).
Shared on
November 15th, 2016 21:45.
LoRaWAN Arduino ProMini-RFM95W node
4Way swithc.brd
by
Debolestis.
2
layer board of
0.68x0.82
inches
(17.32x20.78
mm).
Shared on
November 15th, 2016 19:46.