Turn-key PCB assembly services in prototype quantities or low-volume to mid-volume production runs

Universal Remote

We all have faced the problem of managing multiple remotes while using our home theater. Although there are commercially available universal remote, this project will allow you to make your own universal remote controller and hence will teach you the working of a remote. In short, it learn the required signal of different remotes all at once, store them and can transmit them based on the input received from the user on the remote. A typical NEC protocol is used to implement the remote control but with a little modification you could also use RC-5 protocol Presently, it only has the capacity to store 9 buttons due to the keypad being used, however, you could replace with a touch screen based LCD to store more signals and increase the attractiveness of the project. The microcontroller used for this project is Atmega1284 mounted on a custom PCB. When the device is in input mode, microcontroller is used to detect IR signal to store the signal of your remote. When the device is in output mode, microcontroller detects user input and generates… Continue reading

Wireless Christmas Lights Controller

remote Christmas lights controller

This project is from the hot currently trending topic of IOT which stands for internet of things. Majority of the semiconductor companies are concentrating on IOT based products and hence are designing the required controllers. This project features a remotely programmable relay controller which can be used to control Christmas lights and also automate the lights of the house wirelessly. It features a Web based state machine in the AtMega chip so that the relays will operate in whatever sequence with whatever timing you want – all by themselves. The advantage of using a web based state machine allows you to have a set of relays connected to the end of a piece of Ethernet cable that can be accessed from a web browser anywhere from your house and with little tweaking you can access ti from your office too. For those who are not aware off, A state machine is one of the simplest controllers that knows the current state and predicts the future state accordingly .State machines are driven by a table called a state table.  Essentially what… Continue reading

Multi remote control works with IR and RF

universal remote control center

One remote control idea isn’t new one. There are plenty universal remotes available but they usually made for IR channel. Being electronics nerd you probably have several wireless technologies around the house. And you probably won’t find a universal remote for this. The only way is to make your own. Kalle spent some time in putting such thing together. The remote control center is based on Atmega88 microcontroller. it can send and receive data from several transmitters including nRF20L01, simple 433MHz module, and IR. The first one is great for sending packet data as it already has built in packet analysis feature. 433MHz module is used for simple turn on/off remote devices and IR takes care of infrared controlled devices like TV, stereo. So far remote controller accepts commands from PC based software via COM port. But final goal seems to be smart phone control which is still a work in progress. (translated) Continue reading