Continue to Site

Welcome to our site!

Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Register Log in
  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Recent content by AllenPitts

  1. A

    What is correct names for GOOD user friendly circuit drawing program?

    Hello gary350, Nigel Goodwin, MaxHeadRoom78, Papabravo, For The Popcorn, ZipZapOuch, ChrisP58, alec_t, bill_L, ChristianThomas, and the ETO forum, What is correct names for GOOD user friendly circuit drawing program? In this sentence the verb to be 'is', singular, is used with the noun...
  2. A

    ATtiny85 upload on Sparkfun Tiny Programmer 11801 250502

    Hello ETO forum, Although the Tiny Programmer 11801 has been used successfully a couple of times before, on Tuesday, April 29 after the sketch is compiled in Arduino IDE V 2.3.5, when the sketch is sent to the Tiny Programmer the IDE returns: "Failed programming: uploading error: exit status 1...
  3. A

    Seeed XIAO SAMD21 with PIR 250303

    Hello rjenkinsgb and the ETO forum, "so you could some extra circuitry to switch a higher voltage to the gate." Perhaps a transistor between the output pin 4 and the load transistor, Q2, could allow the 5v coming from the 7805 to drive the Q2 gate. Please accept a request to review the...
  4. A

    Seeed XIAO SAMD21 with PIR 250303

    Hello ETO forum, Have built and installed a half dozen closet lights that use PIRs (motion detectors) to turn three 12 volt lamps on for a minute.=, schematic attached. The timer is a microcontroller called XIAO SAMD21 A couple of the closet lights have failed, not because they won't come on...
  5. A

    What is correct names for GOOD user friendly circuit drawing program?

    Hello Gary350, Tried several Eagle, LTSpice. The easiest one to learn found is DipTrace. Allen PItts
  6. A

    Seeed XIAO SAMD21 to MOSFET 241028

    Hello ETO forum, This is not an Arduino microcontroller question but the Seeed XAIO SAMD21 is Arduino compatible, that is, it runs sketches written in the Arduino IDE so it is hoped that this query will fit in this category. Working with the Seeed XAIO SAMD21 to operate a MOSFET AUIRF540Z...
  7. A

    ATtiny85 Reliability 240816

    Hello danak, Nigel Goodwin, and the ETO forum, It has taken a while to get back to this post because an out-of-state wedding was attended last weekend. 240819.1 danak Schematic of the Closet system using 555 timer marked 220923 attached herewith. 240819.2 Nigel Goodwin The cap used in the...
  8. A

    ATtiny85 Reliability 240816

    Hello ETO forum, For about a year, beginning in 2021, a 555 timer was used to receive a signal from a PIR and saturate a transistor that turned on four twelve-volt LEDs to light a closet, staircase or other small space. After a few months it was noticed that about a quarter of the...
  9. A

    PIR to NeoPixel 240207

    Hello Mr. Goodwin and the EOT forum, Thanks for your excellent post. Because knowledge and experience with electronics is yours the explanation is prefaced with 'simply'. Because I am an architect, not an EE perhaps it could be understood that this is not, at least for me, simple. The phrase...
  10. A

    PIR to NeoPixel 240207

    Hello ETO forum, Working on light object that uses a PIR to trigger a microcontroller, which operates a Adafruit Neopixel 16 ring. Presently the LED display operates when triggered by the PIR for a minute as timed by the ATtiny85 microcontroller. An improvement to the system would be for the...
  11. A

    Star LED 230826

    Hello dandak, for the popcorn, Jverive and the ETO forum, Because I am an architect who has stumbled into the world of lighting using LEDs, not an electrical engineer, my ignorance of the terminology makes it a little difficult to understand some of the replies, It is written: 'The recognition...
  12. A

    Star LED 230826

    Hello danak and the ETO fotum, The reply from dananak is much appreciated. It must be admitted that I am a bit red-faced because the table provided in dananak's post from http://www.vollong.com/Product/?306-37.html was read but was not really sure what was meant by 'Drive Voltage(V)'. If the...
  13. A

    Star LED 230826

    Hello EOT forum, Working on using LEDs in residential architectural lighting. In 2013 it was discovered that the first LEDS that were encountered in the electronics domain, 5 mm thru hole light emitting diodes, were indicators not illuminators. In search of LED illuminators the 1156 was exposed...
  14. A

    AC Adapter Polarity 230816

    Hello Popcorn and the ETO forum. Found the ridges. Excellent answer. Thanks. Allen Pitts
  15. A

    AC Adapter Polarity 230816

    Hello ETO forum, The context is a twelve volt circuit that uses a PIR sensor to trigger a microcontroller, ATtiny85, to turn on 12 volt LEDs to come on for a minute. The circuit is powered by a 12 volt, two amp AC/DC adapter, a wall wart. The adapter is small enough (3"x1.5"x 1") that the...
See more

Latest threads

New Articles From Microcontroller Tips

Back
Top