AtlWrk

Member Since: May 10, 2011

Country: United States

  • Sort of. The two capacitors are necessary when a voltage switch is used like this. When using the 115V setting the switch reconfigures the bridge and input capacitors into a voltage doubler circuit. Because of this everything else downstream doesn’t have to be reconfigured for a lower input (compared to the 230V input). They appear in series but there is a connection to the common point coming from the input (switch) in the doubler configuration. (I believe it’s called a Delon circuit). Creative trick.

  • This is also great for in-circuit programming of surface mount Attiny85 chips without wasting real estate on a 6pin header that’s bigger than the chip itself. :-)

  • The datasheet labels them “wash tight” (versus open, vented or “dust shield, unsealed”) so yes they should be dust and water resistant (not proof)

  • If the relay pictured is what they actually have in stock then yes, this is a SPST relay. (1 form A, normally open)

  • Perhaps in the next design iteration add pads on the back for the 6 pin SMD female header that FTDI Basics use? There’s plenty of real estate and it would be nice to not have the connector overhang the board.

  • I finally noticed the datasheet lists “Integrated amplifier for driving 16 Ω speakers” in the features section at the very top.

  • 20 pins –> ATtiny2313

  • Will shorting the tweezers destroy the microcontroller or is there inherent protection in the 328p?

  • Whether it’s an AC or DC load makes a BIG difference in choosing a relay–particularly when it’s an inductive DC load (e.g. a motor). DC loads are harder on the contacts so relays are typically rated much lower for DC than for AC, if at all.

  • Laser printers, by virtue of design, cannot print directly on conductive substrates. :(

No public wish lists :(