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. 2017 Jul 19;17(7):1653. doi: 10.3390/s17071653

Figure 4.

Figure 4

Small Open General purpose Sensor (SOGS) daughterboard example configuration. This diagram shows the base board, an expansion board (through the digital Raspberry Pi header) and instrument boards (through the analogue headers). Multiple boards can be stacked through the digital header, and up to four different analogue instruments can be connected. Each instrument board connector carries power and eight analogue signals.