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  1. bertus

    Radio Daze

    Hello, You could have a look at SDR. http://www.arrl.org/software-defined-radio There is a online website where you can listen to the shortwave: http://websdr.ewi.utwente.nl:8901/ If you want a decent receiver, you will have to look deep in your pocket. The receivers from Yeasu and icom are...
  2. bertus

    Ultrasonic sensor cable length

    Hello, The cable between the sensor and the board can likley not be changed. The add tells me that the sensor cable is 2.5 Meters. You could use the XRL cable between the board and the arduino and keep the sensor cable as origenal. Bertus
  3. bertus

    Ultrasonic sensor cable length

    Hello, Wich ultrasonic sensor are you using? What kind of cable are you using? Could conversion at the vessel help, before sending it over the cable? Bertus
  4. bertus

    Comedy Thread

  5. bertus

    HELP! My 5 core keyboard wire have 2 black cores.

    Hello, As said, what is the brand and model of the keyboard. Also where is the cable located on the keyboard? Bertus
  6. bertus

    A Little Delayed in Starting

    Hello, Did you look at the Peter Vis basic echo page? There you will se a red line in the schematic as optional connection between analog and digital ground: Bertus
  7. bertus

    Dual dc power supply switch over led circuit.

    Hello, The BC327 and BC557 are PNP transistors. The BC557 will do to drive the led. Bertus
  8. bertus

    A Little Delayed in Starting

    Hello, The capacitors on the powersupply are decoupling capacitors. They will provide a stable working of the chip, as the chip is a digital one and can create pulses on the power line. You can read this thread on the AAC for more info: Decoupling or Bypass Capacitors, Why? Bertus
  9. bertus

    A Little Delayed in Starting

    Hello, The datasheet shows that the normal oprating voltages are between 4.5 and 5.5 Volts. As said you can use a 7805 to regulate the voltage to 5 Volts. One thing, the 7805 needs at least 7 Volts to be able to regulate. A LDO regulator like the LD1117-50 needs about 6 Volts to be able to...
  10. bertus

    A Little Delayed in Starting

    Hello, Yes, you can use two 8 pin sockets to stack an 16 pin chip. Just put them close together on the board. Bertus
  11. bertus

    A Little Delayed in Starting

    Hello, You will find more info on the PT2399 chip on the website of Peter Vis: https://www.petervis.com/guitar-circuits/pt2399/basic-echo-circuit.html On the bottom of the page there are more links. Bertus
  12. bertus

    Help needed for pulley system please

    Hello, It looks like the pulley is not correctly centered. so it swings. How are the screws arranged? When they are arranged in 120 degrees, you must be able to find a center. Could you fill the space between the axis and pulley with, for instance, some aluminium foil as shimming foil? Bertus
  13. bertus

    Help needed for pulley system please

    Hello, The video does not show. The link asks for a login. Bertus
  14. bertus

    How long will a 0.9ma nano motor unit last on a DCell?

    Hello, From the ebay page: At 1.5 Volts the motor takes 80 mA. At 3 Volts the motor takes 160 mA. Where did you get the 0.9 ma ? Bertus
  15. bertus

    Anyone know of a good, very basic, cheap electronic sketch pad?

    Hello, Also the standard kolourpaint for KDE can be used for sketching: http://www.kolourpaint.org/ In OpenSuse the linux I am using it is the standard paint program. I am using version 21.08 for making the schematics I post. The schematics symbols I take from this sheet: Bertus
  16. bertus

    How long will a 0.9ma nano motor unit last on a DCell?

    Hello, You are not clear. The title says 0.9ma. The post says 0.7 Amp. What is correct? Bertus
  17. bertus

    The mobile power bulges

    Hello, Lithium is an alkali metal, Read this page: https://ehs.stanford.edu/reference/information-alkali-metals Bertus
  18. bertus

    Dual dc power supply switch over led circuit.

    Hello, When using the diode arrangement as @Harald Kapp said, will introduce a voltage drop. The drop will be a bit lower when using shottky diodes in stead of standard diodes. (about 0.3 versus 0.7 Volts) Bertus
  19. bertus

    Lg65uj6300

    Hello, What did solve the issue? Knowing the solution, might also help others. Bertus
  20. bertus

    Mainboard with reworks need comparison to same type

    Hello, Do you have the service manual? Download it here: https://www.synthxl.com/ensoniq-sd-1/ Bertus
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