From a4482eb71f97af2b7e9449f0bd90f483a6c2e513 Mon Sep 17 00:00:00 2001 From: Sadeep Madurange Date: Sun, 3 Nov 2024 16:07:28 +0800 Subject: Readme with electrical connections. --- door_lock/README.txt | 14 ++++++++++++++ 1 file changed, 14 insertions(+) create mode 100644 door_lock/README.txt (limited to 'door_lock') diff --git a/door_lock/README.txt b/door_lock/README.txt new file mode 100644 index 0000000..1e6046f --- /dev/null +++ b/door_lock/README.txt @@ -0,0 +1,14 @@ +ELECTRICAL CONNECTIONS + +Following connections puts the atmega328p in a configuration that +mirrors the configuration of an Arduino Uno. + + 1. Pin 1 of the IC connects to the 5V via a 10k resistor to prevent + the atmega328p from resetting. + 2. A 16MHz crystal oscillator connects to pins 9 and 10, and each pin + of the crystal oscillator connects to ground via 22pF capacitors. + 3. Pins 7, 20 and 21 (counted clockwise from the bottom left of the + IC) connect to 5V. + 4. Pins 8 and 22 connect to ground. + +Now connect the PWM line of the servo to pin 15 of the IC. -- cgit v1.2.3