Abstract: A hydroponic device includes a water tank, a drain pan, a hydroponic module and a light emitting diode module. The water tank delivers water to the drain pan via a drain pump. The water is then dispensed to each pot body of the hydroponic module. Each pot body includes an inner pot and an outer pot. Water inside the inner pot will flow to the outer pot through the draining hole. Water will flow out of an overflow outlet and re-enter the water tank if the water level is higher than the overflow outlet. The light emitting diode module is disposed above the hydroponic module.

Abstract: A method and device for establishing link are provided. The method for establishing link is applied to an Ad-Hoc network includes: generating, by a first electrical device, a first part of a service set identifier according to a user's name and a network-card address; generating a second part of the service set identifier according to the first part of the service set identifier, a private key and a first algorithm; generating the service set identifier according to the first part of the service set identifier and the second part of the service set identifier; generating a link password according to the service set, the private key and a second algorithm; and establishing, by a second electrical device, a link with the first electrical device according to the service set identifier, the private key, the first algorithm and the second algorithm.

Abstract: A method and device for establishing a Bluetooth connection are provided. The method includes: generating, by a first electrical device, a first part of a Bluetooth identifier according to a user's name and a Bluetooth network-card address; generating a second part of the Bluetooth identifier according to the first part of the Bluetooth identifier, a private key, and a first algorithm; generating the Bluetooth identifier according to the first part of the Bluetooth identifier and the second part of the Bluetooth identifier; generating a password according to the Bluetooth identifier, the private key and a second algorithm; transmitting, by a second electrical device, a Bluetooth pairing request according to the Bluetooth identifier, the private key, the first algorithm, and the second algorithm; and responding, by the first electrical device, the Bluetooth pairing request to establish the Bluetooth connection with the second electrical device.

Abstract: A method and device for establishing a Bluetooth connection are provided. The method includes: generating, by a first electrical device, a first part of a Bluetooth identifier according to a user's name and a Bluetooth network-card address; generating a second part of the Bluetooth identifier according to the first part of the Bluetooth identifier, a private key, and a first algorithm; generating the Bluetooth identifier according to the first part of the Bluetooth identifier and the second part of the Bluetooth identifier; generating a password according to the Bluetooth identifier, the private key and a second algorithm; transmitting, by a second electrical device, a Bluetooth pairing request according to the Bluetooth identifier, the private key, the first algorithm, and the second algorithm; and responding, by the first electrical device, the Bluetooth pairing request to establish the Bluetooth connection with the second electrical device.

Abstract: A method and device for establishing link are provided. The method for establishing link is applied to an Ad-Hoc network includes: generating, by a first electrical device, a first part of a service set identifier according to a user's name and a network-card address; generating a second part of the service set identifier according to the first part of the service set identifier, a private key and a first algorithm; generating the service set identifier according to the first part of the service set identifier and the second part of the service set identifier; generating a link password according to the service set, the private key and a second algorithm; and establishing, by a second electrical device, a link with the first electrical device according to the service set identifier, the private key, the first algorithm and the second algorithm.