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  1. HarryA1

    Who is caching electronics-lab?

    I noticed that Firefox was caching this site. For example coming here today I see member a count of 94,515. If I force the browster to refresh I get a count of 94,520.  I have dorked around with the Firefox browser to find how or where it was caching the site; to no avail. I tried Opera and Edge...
  2. HarryA1

    Weeding out good post from the bad.

    When a post is made the forum software often displays key technical words in the post description. This would suggest that one could use that software to detect post that are legitimate from others. Of course the the devil is in the details. Invision's Zendesk maybe open to support on something...
  3. HarryA1

    Error code 2S119/1

    When I try to login with my desktop computer I get this error code. Forum is unhappy with my desktop computer. I can login via my laptop okay. [contact us] does not work also - can not enter a message.
  4. HarryA1

    For sale 5.75$ power supply.

    I would think these 5 volt and 5 or 8 ampere power supplies would be useful for micro-controllers, etc. https://www.sciplus.com/8a-5vdc-power-supply-65520-p
  5. HarryA1

    Electronics Lab from 2007

    From back in the old days: https://web.archive.org/web/20070926045222/http://www.electronics-lab.com/forum/index.php
  6. HarryA1

    Arduino + Visual Basic

    You can use the serial commucations control in VB (Visual Basic) to commucate with an Arduino board. This allows one to make a more formal interface to the board. The serial comm control is found in project/component/Microsoft Comm Control 6.0 in the VB visual studio. Selecting it adds it to...
  7. HarryA1

    HarryA's modem is down

    I lost my modem  so I am down until this weekend or Monday. I will help answer questions then. I am using the library's wi-fi today.
  8. HarryA1

    How to edit ones profile?

    How does one edit their Public Profile? I can see it under Profile but not how to change it.
  9. HarryA1

    Light font?

    Is it me or is the forum running out of toner? The font seems to be getting lighter over time. I can not adjust the browser to improve it. Also at login there is no physical response; the login area is down below the screen so one thinks nothing happened. Just trying to be helpful 😀
  10. HarryA1

    Win 30,000$ helping NASA

    Help NASA explore the moon and win up to 30,000$. See: https://www.herox.com/crowdsourcing-projects/government
  11. HarryA1

    RF Wireless Charging Technology

    Over the air wireless charging transmitter.  Nikola Tesla would be proud of them. see:  https://www.energous.com/company/about-energous/ Energous stock traded at a volume of 123,210,608 shares today; the average trade per day is 671,390. Symbol is : watt
  12. HarryA1

    In the bowels of: Sonic Sensor

    In the photography is the "Ultrasonic HC-SR04 distance measuring transducer sensor". "HC-SR04 consists of ultrasonic transmitter, receiver, and control circuit. When triggered it sends out a series of 40KHz ultrasonic pulses and receives echo from an object. Power supply: 5V DC; quiescent...
  13. HarryA1

    In the bowels of: TV IR Sensor

    In the photography is the remote control receiver module from a VIZIO television. At the lower center is IR sensor and to the right of the sensor marked by red is the power on white LED. This photography shows the output from the module  when a remote control button is pressed and held. The...
  14. HarryA1

    In the bowels of: LED tube lamp

    The photographs show the working end of a 24 inch LED tube light. This type of light only requires connections to one end. No ballast is required for this light. The light yellow device at the lower right is the transformer. Next to it is a yellow capacitor. On the bottom the larger three...
  15. HarryA1

    In the bowels of: Laptop battery

    For those who have not peeked in to a laptop battery the photo shows the interior of one. The battery is made up of 6 lithium ion cells of 3.7 voltages each in three pairs. Connected to each pair are connections for balanced charging. This battery does not have thermistors for monitoring...
  16. HarryA1

    In the bowels of: gas range

    For you folks that have not worked on a gas range /kitchen cook stove. In the photo the igniter at the top draws current through the gas valve below. The igniter draws current slowly at first as it heats up to typically 3.5 amperes. Only then does the heater (white windings) in the valve heat...
  17. HarryA1

    spam prevention?

    Why don't you all use the spam prevention tools? https://invisioncommunity.com/features/spam/ On my forum one must answer a question that any kayak or canoe paddler would know to register. Got read of the damn Russians!
  18. HarryA1

    Antediluvian chips

    Free to good home for 5$ shipping and handling. Save them from the land fill! Some are old enough to be your parents! Antediluvian? You will have to look it up.
  19. HarryA1

    Practical High Quality (transistors)

    "50Pcs NPN Transistor TO-92 2N2222A 2N2222 Brand New Practical High Quality"  (Ebay) Does "Practical High Quality" mean hfe's of almost  100 ???
  20. HarryA1

    Capacitors?

    I am thinking these are color coded capacitors. Photography of part of an early computer.
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