Although not AVR related, how about a .NETMF device like this?
https://www.ghielectronics.com/catalog/product/398
I use this exact model along with this TE35 touch display to control a watering system for my wife's plants.
https://www.ghielectronics.com/catalog/product/387
It has WiFi and if you use a RelayX1 module, you can just plug in this to control the relay.
I've started to mix and match AVR and .NETMF for a number of my home projects. I use AVR as the remote sensors talking via Zigbee to this module. The module then handles all of the GUI interface etc.
For the plant watering system, I have an AVR Mega328 based Arduino board with a Zigbee interface. This controls the water pump, reads the flow sensor and also the moisture sensor. This is located outdoors in a sealed box.
I also have another AVR with Zigbee that measures the water level in the reservoir and transmits this back to the GUI based on the board above.
You'll find you can get this working much faster than using an AVR (possibly Arduino based) and it has full debugging capability too.
PS.. By the time get an AVR with Wifi, display and all the IO, it will cost just as much as the board above.
Dave…
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Very funny Scotty, now beam down my clothes…
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From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf Of Riccardo Castellani
Sent: 23 September 2013 12:40
To: AVR-Chat@yahoogroups.com
Subject: [AVR-Chat] microcontroller for irrigation unit
I'm very very newby and I'd like automatic irrigation unit with display, monthly timer, 1 on/off valve; then I'd like to interface it with wifi/ethernet module to set time to start or status check.
Can you suggest me what microcontroller I can use ?
Message
Re: [AVR-Chat] microcontroller for irrigation unit
2013-09-23 by H. Carl Ott
There is also the opensprinker design. Seems to be open source. Should be able to pick up some ideas.
On Mon, Sep 23, 2013 at 3:30 AM, Dave McLaughlin <dave@embeddedcomputer.co.uk> wrote: