Abstract: Switchless sensing is provided to control electronic devices of the type associated with deterrent devices.

Abstract: A kit includes a deterrent device, a grip activation system, and a housing supporting the grip activation system. The housing positions the grip activation system so that a sensing space of the grip activation system extends at least partly adjacent to a trigger guard of the deterrent device. The grip activation system includes an emitter configured to emit first electromagnetic radiation having a first wavelength; a detector configured to detect second electromagnetic radiation having the first wavelength; and a controller. The controller determines, based at least in part on the second electromagnetic radiation, that an object is present in the sensing space; and provides an activation signal to an activatable system in response to determining that the object is present in the sensing space. The activatable system can include a light source. Some examples include a housing, a grip activation system, and an activatable system.

Abstract: A kit includes a deterrent device, a grip activation system, and a housing supporting the grip activation system. The housing positions the grip activation system so that a sensing space of the grip activation system extends at least partly adjacent to a trigger guard of the deterrent device. The grip activation system includes an emitter configured to emit first electromagnetic radiation having a first wavelength; a detector configured to detect second electromagnetic radiation having the first wavelength; and a controller. The controller determines, based at least in part on the second electromagnetic radiation, that an object is present in the sensing space; and provides an activation signal to an activatable system in response to determining that the object is present in the sensing space. The activatable system can include a light source. Some examples include a housing, a grip activation system, and an activatable system.

Abstract: A kit includes a deterrent device, a grip activation system, and a housing supporting the grip activation system. The housing positions the grip activation system so that a sensing space of the grip activation system extends at least partly adjacent to a trigger guard of the deterrent device. The grip activation system includes an emitter configured to emit first electromagnetic radiation having a first wavelength; a detector configured to detect second electromagnetic radiation having the first wavelength; and a controller. The controller determines, based at least in part on the second electromagnetic radiation, that an object is present in the sensing space; and provides an activation signal to an activatable system in response to determining that the object is present in the sensing space. The activatable system can include a light source. Some examples include a housing, a grip activation system, and an activatable system.

Abstract: Switchless sensing is provided to control electronic devices of the type associated with deterrent devices.

Abstract: Switchless sensing is provided to control electronic devices of the type associated with deterrent devices.

Abstract: Switchless sensing is provided to control electronic devices of the type associated with deterrent devices.

Abstract: Laser systems are provided. In one aspect a laser system has a battery unit and a transistor having a source and a drain in series with the laser and the battery unit with the laser with the transistor having a source, and a gate that allows sufficient current to flow to the laser to allow the laser to emit light when a voltage at the gate is at a higher level and that does not allow sufficient current to flow to allow the laser to emit light when a voltage at the gate is at a lower level. A microcontroller is operable in an active mode and a reduced power mode having an activation input connected to a switch, a reduced power input connected in parallel with the capacitor and an output connected to the gate.

Abstract: Laser systems are provided. In one aspect a laser system has a battery unit and a transistor having a source and a drain in series with the laser and the battery unit with the laser with the transistor having a source, and a gate that allows sufficient current to flow to the laser to allow the laser to emit light when a voltage at the gate is at a higher level and that does not allow sufficient current to flow to allow the laser to emit light when a voltage at the gate is at a lower level. A microcontroller is operable in an active mode and a reduced power mode having an activation input connected to a switch, a reduced power input connected in parallel with the capacitor and an output connected to the gate.

Abstract: Laser systems are provided. In one aspect a laser system has a battery unit and a transistor having a source and a drain in series with the laser and the battery unit with the laser with the transistor having a source, and a gate that allows sufficient current to flow to the laser to allow the laser to emit light when a voltage at the gate is at a higher level and that does not allow sufficient current to flow to allow the laser to emit light when a voltage at the gate is at a lower level. A microcontroller is operable in an active mode and a reduced power mode having an activation input connected to a switch, a reduced power input connected in parallel with the capacitor and an output connected to the gate.