Differences

This shows you the differences between two versions of the page.

--- pi:temperature [2017/12/03 13:56] – [18B20 (digital)] slack
+++ pi:temperature [2019/11/07 17:58] (current) – external edit 127.0.0.1
@@ Line 2: / Line 2: @@
 ===== 18B20 (digital) =====
+Wiring:
+  * Waterproof:
+    * Red: 3.3V
+    * Yellow: 4.7 k pull-up (5.1k fine) and gpio pin nominated in ''/boot/config.txt''
+    * Black: ground
+  * Kit module:
+    * 1 (labelled ''-''): ground
+    * 2: 3.3V
+    * 3 (labelled ''S''): 4.7k pull-up and signal
+Wire as many as you like in parallel.  There are limits to numbers and to wiring length, but they're not simple.
 At the end of ''/boot/config.txt'' (replace 21 with pin number):