PiXtend V2 -L- Hardware Manual
5.6. Error LED “L1“-Signals.............................................................................................62
6. Technical Data & Connection Notes................................................................................63
6.1. Overview - Connections & Functions.......................................................................63
6.2. Information about the overall system.......................................................................64
6.2.1. Thermal consideration.......................................................................................65
6.2.2. Power supply.....................................................................................................68
6.2.3. The connection to Raspberry Pi........................................................................72
6.2.4. Power supply - Raspberry Pi 7“ touch display..................................................76
6.2.5. Retain System...................................................................................................77
6.2.6. Terminal blocks..................................................................................................78
6.2.7. Mechanics.........................................................................................................79
6.3. PiXtend V2 -L- Microcontroller..................................................................................81
6.4. Digital inputs and outputs.........................................................................................88
6.4.1. Digital inputs......................................................................................................88
6.4.2. Digital outputs....................................................................................................93
6.4.3. Relay outputs.....................................................................................................98
6.4.4. GPIOs as digital inputs and outputs................................................................103
6.5. Analog Inputs & Outputs.........................................................................................108
6.5.1. Analog Inputs...................................................................................................109
6.5.2. Analog Outputs................................................................................................121
6.6. Special Inputs and Outputs....................................................................................125
6.6.1. PWM / servo-outputs.......................................................................................125
6.6.2. DHT11/22, AM2302 Sensors...........................................................................129
6.7. Serial interface........................................................................................................130
6.7.1. RS232..............................................................................................................131
6.7.2. RS485..............................................................................................................134
Manual & automatic mode of the RS485 interface:.......................................................137
6.7.3. CAN.................................................................................................................138
6.8. Real-Time-Clock.....................................................................................................142
7. List of Figures.................................................................................................................143
8. Table directory................................................................................................................146
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