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deprecated/F1/Timelapse_keyboard/Readme.md

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+## Time-lapse as USB HID keyboard
+
+This tool allow to get precision time of events: pressing switch,
+changing distance measured by ultrasonic or infrared sensor,
+laser light disappearing on photoresistor
+
+Just connect board to any device with USB keyboard support, after some time
+(needed to establish GPS connection and precision timer setup) it will simulate
+keyboard on which somebody types time of sensors' state changing
+
+
+#### Sensors supprorted
+* SHARP GP2Y0A02YK - infrared distance-meter
+* HCSR04 - ultrasonic distance-meter
+* simple switch-button
+* photoresistor + laser
+
+To get precision time this tool use GPS module (NEO-6M)
+
+#### Connection diagram
+| Pin  | Function  |
+| :--: | :-------- |
+| PA0 | Infrared sensor data |
+| PA1 | Laser photoresistor data |
+| PA2 | GPS Rx (MCU Tx) |
+| PA3 | GPS Tx (MCU Rx) |
+| PA4 | GPS PPS signal |
+| PA5 | Trigger (button) switch |
+| PB10 | Ultrasonic "TRIG" pin |
+| PB11 | Ultrasonic "ECHO" pin |
+
+#### Powering devices
+* To power up GPS module you can use +5V or +3.3V.
+* Ultrasonic & Infrared sensors need +5V power.
+* Photoresistor should be connected to +3.3V by one pin, another pin (data) should be pulled to ground by 1kOhm resisror