I have a fair understanding of how pokeys work and ardunio. Some homework is needed - good support for this sort of stuff is found at many sites… This site is more about using Kicad to Build your design… Just need to set their Range (with respect to Digital Range (example: 5v/256 = 0.02v each increment… Or, as the Arduino example shows, 5/1023 = 0.005v/increment) Pots use a range of voltages (depends on device/Resistance…) and both Arduino and Pokey (pretty much all devices) can use typical Pots. Draw a hand sketch of what’s needed (before making the schematic, this will save time)… Both Arduino and Poky have Vin and Vout so, be sure you don’t mix them (In/Out and Voltage levels) as you seem to currently be doing.Your image shows Voltage incorrectly hooked up! Jumpers/Switch… Rather than my posting what/how to do it, you will gain a firm/better understanding by reviewing Info Here.Build simple BreadBoard circuit with them. Best to start Simple to gain understanding…ĮDIT: The Arduino IDE has several good Example Sketches that are very usable for testing your knowledge.Once plugged in, it’s difficult to unplug due to so many Pins…ĪDDED: Example of Ganged Pins on UNO (for higher current output) Last Screenshot There’s a Mega board (shield) in the stock Templates panel. If your attached gizmo’s (sensor’s, etc) can live with 3.3v and/or 5v at 40mA (per pin) then, best to use them on the Board for convenience and power the Arduino from a Wall-Wart/other supply to the Barrel jack or Vin. Each output pin can supply not more than 40mA BUT, you can Gang them to provide multiples of 40mA).IOREF is for I/O Ref (not for powering).AREF is for Analog Ref (not for powering).3.3V and 5v are Output voltages to supply your attached gizmo’s.Powering in from USB is ok for low-level draw but, can cause issues with other pins (especially if output pins) best to avoid. Yes, Power from External (7 - 12 volts to VIN or Barrel-Jack). I’ve made well over 200 projects with Arduino’s (Uno, Nano, Mega, Teensy and Atmel-Chips(328, Tiny 13, 84, 85)). A properly configured shield can read the IOREF pin voltage and select the appropriate power source or enable voltage translators on the outputs for working with the 5V or 3.3V. This pin on the board provides the voltage reference with which the microcontroller operates. A 3.3 volt supply generated by the on-board regulator. Supplying voltage via the 5V or 3.3V pins bypasses the regulator, and can damage your board. The board can be supplied with power either from the DC power jack (7 - 12V), the USB connector (5V), or the VIN pin of the board (7-12V). This pin outputs a regulated 5V from the regulator on the board. You can supply voltage through this pin, or, if supplying voltage via the power jack, access it through this pin.ĥV. The input voltage to the board when it’s using an external power source (as opposed to 5 volts from the USB connection or other regulated power source). If using more than 12V, the voltage regulator may overheat and damage the board. If supplied with less than 7V, however, the 5V pin may supply less than five volts and the board may become unstable. The board can operate on an external supply of 6 to 20 volts. Leads from a battery can be inserted in the GND and Vin pin headers of the POWER connector. The adapter can be connected by plugging a 2.1mm center-positive plug into the board’s power jack. The power source is selected automatically.Įxternal (non-USB) power can come either from an AC-to-DC adapter (wall-wart) or battery. The Mega 2560 can be powered via the USB connection or with an external power supply. Then the question is which 5 V should I use? External or internal from Arduino? I think this should be solved by +Analog being connected in parallel on the shield to either 3.3V on pokeys or 5 volts on Arduino. If I use Pokeys, it wants 3.3V for Potentiometers, while Arduino wants 5 V. What do I do with the rest of the Power Pins? I should connect 7-12 Volts on the VIN pin I think I drew 5 Volt input on all 5 Volts. In this thread I am making a shield for Arduino and/or Pokeys:īut I have started to question my thinking about Power Distribution.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |