In my previous post, I introduced the Nanode - a low cost, internet connected Arduino board.
I mentioned at the end of the post that Ken had been working on two new products – the Nanode RF and the Wi-Node and I wanted to go into more detail about those here.
Firstly the Nanode RF – discussed by Ken here, here and here. The Nanode RF is an evolution of the existing Nanode 5 board. It features a number of improvements and additional features. It will be available from December 2011 for around £30 to £35 depending on the build option (around £30 for the basic kit including RFM12B module and SRAM, going to up around £35 with the RTC, micro SD slot and super capacitor).
Ken has also announced that the Nanode RF PCB will at some point start to be sent out in all basic Nanode kits as it contains a number of improvements and the only thing it lacks over the Nanode 5 is the screw terminals for easy connection of external power and serial – both of which are available elsewhere on the board. Users can then at a later date chose to effectively upgrade their Nanode to be a Nanode RF module and/or the other optional features of the Nanode RF.
The Nanode RF brings the following changes/improvements:
- Four – better spaced mounting holes.
- Fully sealed vias for better soldering – less chance of solder shorts
- Improved screenprint for better identification of connections.
- Extra LED – for monitoring RF activity – or whatever.
- 3V3 operation – but retains 5V compatibilty for use with Arduino shields.
- mini B USB connector for powering at 5V.
- Removal of screw terminals.
The Nanode RF brings the following new features:
- A Hope RF RFM12B transceiver for 2 way communications with other boards.
- A microSD card for general datalogging storage, storing applications and webpages
- A realtime clock IC with alarm function which also holds a unique ID – or MAC address
- An 8 pin socket (under the H logo) to allow you to add non volatile RAM for program download
- An 8 pin SOIC footprint to accept an alternative memory device – instead of micro SD card
- Super capacitor for maintaining SRAM and RTC non-volatility.
I was lucky enough to get a pair of Nanode RF prototype boards and have documented the full build process in a Nanode RF Pictorial Build Guide. You can see the photos I used to create the build guide here. I’ve also started collecting as many links and as much information about both the Nanode and Nanode RF as possible on my Nanode Information Page.
The Wi-Node is a dual purpose product. It can either be a “backpack” to extend the functionality of a Nanode 5 board, or it can be used as a remote wireless node which can communicate to either a Nanode 5 with Wi-Node connected or a Nanode RF.
The Wi-Node includes:
- ATmega microcontroller 16MHz
- 868MHz wireless transceiver Hope RF RFM12B (433MHz or 915MHz as options)
- 32K x 8 nonvolatile SRAM with super capacitor for non volatile backup
- Real Time Clock with super capacitor non volatile backup – using the cool Microchip MCP79411 – which contains a unique ID – i.e. MAC address
- Micro SD card for datalogging
- 4 analogue/digital inputs – tolerant to 16V
- 4 high current drive outputs – 1000mA for motors, relays steppers etc
- Analogue inputs and digital drives brought out to 3.5mm pitch screw terminals
- Serial interface/expansion/programming port
- Battery operation where needed 2x AA 3V 2500mAh
- 62 x 23 x 103 mm case
- 5V Solar power option
- Compatible with Nanode, Arduino and shields
The initial Wi-Node PCB’s should be arriving shortly and i’ll be writing up a pictorial build guide as soon as I receive some. The actual Wi-Node kits will be available from December and priced around £17.50. The basic kit will include all the standard build components and an RFM12B RF module. Optional extras of RTC, SD Card Socket and Motor Drive will be available for around an extra £7.50.
Another useful extra arriving soon is a low-cost Nanode branded programming adapter which saves buying an expensive FTDI cable.