Adds link

20231125150622-turbo_streams.org

@@ -3,7 +3,7 @@
 :END:
 #+title: Turbo Streams
 #+date: 2023-11-25 15:06 PM
-#+updated:  2024-05-21 08:49 AM
+#+updated:  2024-12-30 15:36 PM
 #+filetags: :rails:
 
  [[https://turbo.hotwired.dev/handbook/streams][Turbo streams]] are part of the Turbo library, which itself is part of [[https://hotwired.dev/][Hotwire]].
@@ -170,7 +170,10 @@
   #+end_src
 
   *NOTE* the status ~see_other~ ([[https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/303][303]]) which is used in response to a PUT or POST
-  where the redirect is meant to be a GET. See also https://github.com/hotwired/turbo/issues/84
+  where the redirect is meant to be a GET.
+  See also
+  - https://github.com/hotwired/turbo/issues/84
+  - https://turbo.hotwired.dev/handbook/drive#redirecting-after-a-form-submission
 * turbo_stream_from (turbo streams over WebSocket connection)
    This method is used in the view templates to generate a
    ~turbo-cable-stream-source~ HTML tag with a couple data attributes describing

20241115143211-leds.org

@@ -3,7 +3,7 @@
 :END:
 #+title: LEDs
 #+date: 2024-11-15 14:32 PM
-#+updated:  2024-11-19 15:23 PM
+#+updated:  2024-12-03 12:51 PM
 #+filetags: :electronics:arduino:
 
 * Resistors
@@ -20,3 +20,21 @@ common resistor values:
 | RED 1.8V, 20mA    | 82 Ohm  | 100 Ohm | 180 Ohm | 220 Ohm | 390 Ohm | 560 Ohm |
 | WHITE 3.2V, 20mA  | 5.6 Ohm | 27 Ohm  | 100 Ohm | 150 Ohm | 330 Ohm | 470 Ohm |
 | YELLOW 2V, 20mA   | 68 Ohm  | 100 Ohm | 180 Ohm | 220 Ohm | 390 Ohm | 560 Ohm |
+
+Ohms Law: v = ir
+
+1 red LED on 5v circuit
+#+begin_src ruby
+r = (5.0 - 1.8) / 0.02
+#+end_src
+
+#+RESULTS:
+: 160.0
+
+3 blue LEDs in parallel on 5v circuit
+#+begin_src ruby
+r = (5.0 - 3.2) / (3 * 0.02)
+#+end_src
+
+#+RESULTS:
+: 30.000000000000004