This is intended as an attempt of the Arduino Shot timer project (bare bones)
start point is the excellent project - https://code.google.com/p/arduino-shot-timer/
intent is to use the Arduino standard Atmel ATMega328 Micro
-
Parallel LCD (4x20)
-
i2c eeprom to act as non volatile memory (1m write cycles as opposed to internal 50k)
-
rotary encoder for navigation / config
-
powered by 9v Alkaline
-
intended to fit inside plastic 50rnd 9mmp ammo case
-
future
-
communication / connectivity
- BLE / BT / Wifi = to smart phone for scorer
- NFC - tag reader for competitor / acceptance
-
power
- 3.7 lipo (rechargeable)