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| author | Sadeep Madurange <sadeep@asciimx.com> | 2024-11-03 16:07:28 +0800 |
|---|---|---|
| committer | Sadeep Madurange <sadeep@asciimx.com> | 2024-11-03 16:07:28 +0800 |
| commit | a4482eb71f97af2b7e9449f0bd90f483a6c2e513 (patch) | |
| tree | 44c3e3c885ae96be6d853584c2d9f5f2adb65461 /door_lock/README.txt | |
| parent | 6a97a71e2483f19a28f6b2d5ccd62854b0acfb42 (diff) | |
| download | smart-home-a4482eb71f97af2b7e9449f0bd90f483a6c2e513.tar.gz | |
Readme with electrical connections.
Diffstat (limited to 'door_lock/README.txt')
| -rw-r--r-- | door_lock/README.txt | 14 |
1 files changed, 14 insertions, 0 deletions
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. |