how to make your cigarette lighter wearable


let cigarette lighter wearable




from picture, see kind of big, anyway it! cool lighter attractive. different traditional cigarette lighter, kindled arc, controlled flame bottom-touch. touch bottom uses function touch gpio of firebeetle board-esp32. what's more, watch too.

hardware in need:
high-voltage booster coil arc lighter ×1
npn triode×1
51Ω resister×1
1kΩ resister×1
1n4007 diode×1
powerful triode×1
esp32 wifi & bluetooth module×1
firebeetle covers-proto board×1
firebeetle covers-24×8 led matrix×1
3.7v lithium cell×1

hardware connection
schematic , drawing, shown below

soldering electronic components firebeetle covers-proto board according image , connects control pin of lighter d3 of firebeetle covers-proto board wire. can connect d3 of firebeetle board-esp32 directly, compatibility of firebeetle series great! connecting vcc vcc (covers-proto board), gnd gnd (firebeetle covers-proto board).
p.s sorry if not understand drawing.     

1. connecting touch wares.

firebeetle board-esp32 has touch function , chose t3 (a4) , t5 (mclk/io12) connected. (if confused reference pins, firebeetle board-esp32 user manual you.)
2. connecting led light board, firebeetle board-esp32 , soldered expansion board, shown below.



about connection, put pin , female pin , put lithium cell between them.
crust assembly
the curst printed overlord 3d printer, can click here download source document.
firstly, let touch-sensitive wires go through bottom assembling holes reserved before respectively, shown below.


secondly, heating screws , spring washer heat gun fix them crust easier , more convenient (this touch bottom).


caution:
do not touch spring washer hand.
fix spring washer crust, ensuring connection between plate , wires.

caution: 2 output wires of high voltage coil should go through crust.


thirdly, fixing whole crust hot melt adhesive. connecting wristband , cigarette lighter magic tapes respectively, shown below.


fourthly, download program cigarette lighter.
click here download source code.
finally, down!
read reference: esp32 projects - let cigarette lighter wearable



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