New NEST board for lighting and home automation applications
Finaly the requested NEST board useful for lighting and home automation applications will be ready on sale around mid Jan 2012. The NEST board can be used to turn on/off the loads or to dim the lights.
Two inputs are also available to monitor the switches or other digital signals. Nest board is compatible with Flyport WiFi and Flyport Ethernet
It has the following specs:
- Four Relays 220V/5A (for lamps or loads up to 1KW)
- One Dimmer 250W – optoisolated (to adjust the brightness of the lamps)
- Two inputs (dry switch or 0-5V or 0-10V)
The schematic is ready, now we design the PCB and then straight to prototypes! Download the schematic from Scribd
The product will be on sale around mid Jan 2012.
How do you intend to drive the dimmer? Doesn’t the zero crossing circuit prevent the efective use of dimmer?
You can connect directly a Lamp Bulb (250W max). The zero crossing circuit is onboard
I’m sorry, my question was not detailed enough. I am working on some Home automation boards with Open Picus for blinds and light control.
I am planning to use a Solid State Relay for turning the lights and controling the blinds.
However, I don’t yet have the best solution to control the brightness of the lights. Zero crossing circuit prevents dimming with phase control. Even if I use a triac without zero crossing circuit, I still have to detect sync the uController with the mains frequency to accuratelly dim the lights.
Regards, Tomaz