A Feather board without ambition is a Feather board without FeatherWings! This is the Power Relay FeatherWing. It gives you power to control, and control over power.
A Feather board without ambition is a Feather board without FeatherWings! This is the Power Relay FeatherWing. It gives you power to control, and control over power.
Relay control signal. Source https://learn.adafruit.com/adafruit-power-relay-featherwing/pinouts: the relay uses a single control pin; low/floating leaves it open/unset, high closes/sets it; a bottom solder jumper selects the Feather control pin.
Common terminal on the 3-pin 5.08 mm relay output block. Source https://learn.adafruit.com/adafruit-power-relay-featherwing/pinouts: COM is the signal/load line being switched.
Normally connected relay terminal. Source https://learn.adafruit.com/adafruit-power-relay-featherwing/pinouts: NC is mechanically connected to COM when unset and disconnected when set.
Normally open relay terminal. Source https://learn.adafruit.com/adafruit-power-relay-featherwing/pinouts: NO is disconnected from COM when unset and connected to COM when set.
Reset button connection. Source https://learn.adafruit.com/adafruit-power-relay-featherwing/pinouts: reset button is connected to the Feather RST pin and shorts it to ground; it is not connected to the relay.
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| CTRL | digital input | Relay control signal. Source https://learn.adafruit.com/adafruit-power-relay-featherwing/pinouts: the relay uses a single control pin; low/floating leaves it open/unset, high closes/sets it; a bottom solder jumper selects the Feather control pin. | 3.3V logic from Feather; relay coil draw about 100 mA from the 3.3V rail when closed per Adafruit Learn | |
| COM | switch contact | Common terminal on the 3-pin 5.08 mm relay output block. Source https://learn.adafruit.com/adafruit-power-relay-featherwing/pinouts: COM is the signal/load line being switched. | Switched relay contact, not logic | |
| NC | switch contact | Normally connected relay terminal. Source https://learn.adafruit.com/adafruit-power-relay-featherwing/pinouts: NC is mechanically connected to COM when unset and disconnected when set. | Switched relay contact, not logic | |
| NO |
3.3V logic from Feather; relay coil draw about 100 mA from the 3.3V rail when closed per Adafruit Learn · Switched relay contact, not logic
Verify supply voltage and logic levels before powering up.
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| switch contact |
| Normally open relay terminal. Source https://learn.adafruit.com/adafruit-power-relay-featherwing/pinouts: NO is disconnected from COM when unset and connected to COM when set. |
| Switched relay contact, not logic |
| RST | reset | Reset button connection. Source https://learn.adafruit.com/adafruit-power-relay-featherwing/pinouts: reset button is connected to the Feather RST pin and shorts it to ground; it is not connected to the relay. | Feather reset line |