Hello I have finished a schematic and I need a second pair of eyes to review the schematic done. What we are trying to achieve here is to have a MSP430 to pilot a relay and two leds after a sensor piloted via UART send us a validation signale. We also have 4 keys, 3 on the pcb and one on wire. We have created a major connector to connect the sensor, one key and the two leds. The device is running using 9V commercial squared battery (non rechargeable). The sensor is powered in 3.3V, the relay on 3V, and the MCU on 3.3V. We have used BC817 NPN transistor to pilot most of the output. Does anybody see any problem ont this schematic ? Thanks for your second eye. (Please visit the site to view this file)
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