Matrix-orbital LCD2041 Legacy Manuale Utente Scaricare il pdf (Pagina 15)

Figure 17: Bypassing 240 ohm Resistor

NOTE The GPOs do not have any over current or over / under voltage protection so care

must be taken when using them. For instance if the external device is a relay it must be fully

clamped using a diode and capacitor to absorb any generated back electro-motive force or

“EMF”.

Figure 18: Clamping a Relay

3 Displaying Text

This chapter describes the various text-display commands in detail. Before issuing commands to the

LCD2041 please read sections 6.2 and 6.3.

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Matrix-orbital LCD2041 Legacy Manuale Utente Pagina 15