.. type transistor radio plate. Dissemble and strip its windings. Wind 1500 turns primary and 1500 turns secondary with 44 SWG wire. Assemble it back. Purist may also add a layer between the two windings and ground one end to make a Faraday ...
.. Try this one from SparkFun Electronics #COM-00104; $0.95 3.7 V battery (SparkFun Electronics #PRT-08818; $4.95) Scrap wire Round flat-top metal container (I used a salvaged Kiwi Brands shoe polish container -- just to prove to some of ...
.. affair, as bringing your hand near the electrometer will probably alter its reading. The probe can be just a few inches of wire. The impressive looking probe on my meter is nothing more than a redundant adapter from an emergency mobile phone ...
.. cover Plumbing Extension Tube (12 X 1 1/4 in diameter) Hobby Box Momentary Switch 2-AA Battery Holder Epoxy Rubber grommet wire Flash cotton, flash paper and Flame Resistant Confetti Prepare the Base Drill a 1/4 hole in the center of the ...
.. from the 6-pin header to the right places on the chips. This time 'round, I used etched PCBs. You can just as well hand-wire the whole thing on perfboard. The ATTiny13/15 cradle is made with an 8-pin wire-wrap socket. I love these. It's ...
.. 16V Electrolytic Capacitor Q1 1 2N3904 NPN Transistor 2N2222, Most Small Signal Transistors U1 1 555 Timer IC MISC 1 Board, Wire, Knob For R1, 8 Pin Socket For U1 Notes R1 adjusts the position of the servo. Connect the servo to the circuit as ...
.. Lock IC S1-S12 12 SPST Momentary Pushbutton Keypad (see notes) HD1 1 12 Position Header Notes To set the combination, wire the appropriate switches to U1 pins 3, 4, 5 and 6 using the header. For example if S1 was connected to pin 3, S2 ...
.. removed the connector at the other end of the cable, as it is not important. I gave it a good pull, but certainly a pair of wire cutters will get the job done. Strip the LMR cable back so that the inner and outer conductors are staggered. ...
.. scanner: 1 stepper motor 1 ULN2003 chip 2 steel rods For the enclosure: 1 cardboard box The tools: Hot glue gun and glue Wire cutters/strippers Scissors Soldering tools Paint For the controller 1 DB25 port (recycled from previous project) ...