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make_your_own_arduino [2018/12/01 14:11]
sdh7
make_your_own_arduino [2019/07/25 17:02]
sdh7
Line 24: Line 24:
   * Basics of soldering in case anyone is a new solderer.   * Basics of soldering in case anyone is a new solderer.
   * Resistors ​   * Resistors ​
-    * 1K (bigger, brown-black-red)+    ​* Resistors resist the flow of current.  
 +    ​* 1K (bigger, brown-black-red) ​- this one keeps the LED from burning out and/or being blindingly bright
     * 10k (smaller, brown-black-orange)     * 10k (smaller, brown-black-orange)
   * IC socket   * IC socket
Line 30: Line 31:
     * Tack first pin in, then adjust fit as needed     * Tack first pin in, then adjust fit as needed
   * Capacitors   * Capacitors
 +    * Capacitors store a charge. ​
     * 18pF (2) (have black splotch across the top) - in the XTL & Caps area just above the microcontroller.     * 18pF (2) (have black splotch across the top) - in the XTL & Caps area just above the microcontroller.
 +      * These along with the crystal make up the timing circuit for the microcontroller.
     * .1 uF (3) - two in the top left corner, one just above the microcontroller. The one in the lower left corner can be ignored unless you want to add a 2.1mm power input and 7805 voltage regulator.     * .1 uF (3) - two in the top left corner, one just above the microcontroller. The one in the lower left corner can be ignored unless you want to add a 2.1mm power input and 7805 voltage regulator.
 +      * These function as "​decoupling capacitors"​ and smooth out any irregularities in the power
   * Switch - RST   * Switch - RST
   * LED - Square Hole + (long lead)   * LED - Square Hole + (long lead)
Line 37: Line 41:
   * Programming header   * Programming header
     * tack in pin and adjust if necessary     * tack in pin and adjust if necessary
-  * Microcontroller 
-    * ORIENTATION CRITICAL 
   * Jumpers (somewhat optional, and notice that they are zero-ohm resistors!)   * Jumpers (somewhat optional, and notice that they are zero-ohm resistors!)
     * NOTE: The Diavolino does not have any protection from multiple voltage sources. You *must* be a little careful when powering it. If using USB power, TURN THE BATTERY PACK OFF!     * NOTE: The Diavolino does not have any protection from multiple voltage sources. You *must* be a little careful when powering it. If using USB power, TURN THE BATTERY PACK OFF!
     * USBV Jumper - if you don't want to use the battery pack, or want it to be powerable via USB, install this jumper.     * USBV Jumper - if you don't want to use the battery pack, or want it to be powerable via USB, install this jumper.
     * Regulator jumper- if you want to use a 5V wall power supply, you can install this jumper. If you want to use a 9V (or greater) power supply, DO NOT INSTALL THIS JUMPER.     * Regulator jumper- if you want to use a 5V wall power supply, you can install this jumper. If you want to use a 9V (or greater) power supply, DO NOT INSTALL THIS JUMPER.
-  * Battery Pack (optional) 
-    * Use the holes near the solder points for strain relief on the cables 
-    * Pack can be foam-taped to the underside of the board, if you want 
   * Headers   * Headers
     * Solder these carefully- proper alignment is important!     * Solder these carefully- proper alignment is important!
     * Tack one pin of each on, then adjust as necessary     * Tack one pin of each on, then adjust as necessary
 +  * Microcontroller
 +    * ORIENTATION CRITICAL
 +  * Battery Pack (optional)
 +    * Use the holes near the solder points for strain relief on the cables
 +    * Pack can be foam-taped to the underside of the board, if you want
   * Power on test   * Power on test
     * Apply power (via batteries or USB)     * Apply power (via batteries or USB)
make_your_own_arduino.txt · Last modified: 2019/07/25 17:02 by sdh7