I know I’m a bit slack in updates on the blog. If you haven’t noticed I now have a twitter account http://www.twitter.com/madeinoz so you can follow what I’m doing when it’s not getting updated here.
However since the blog is way over due for an update here is what’s been happening in a nutshell.
I have finally gotten off my butt and done a redesign (hah and you thought the project had died a slow death, it may have stalled slowed, but certainly not dead!)
Features worthy of note in the new design (in no particular order):
- 3V design, will run from x2 AA Alkaline or single CR123A 3V battery.
- Fairly compact board, 30mm x 70mm. (without battery) slightly lalonger on 2.4ghz design due to antenna.
- Onboard on/off switch to save batteries when not in use.
- FTDI 3.3v breakout cable port for connecting to either RS232 or USB using the FTDI cable.
- Onboard ISCP port for programming.
- Personality daughter boards. Will allow users to create their own hardware modules, i.e. sound trigger, light trigger, LCD UI, or whatever they like etc
- Atmega168V processor, low cost, low voltage design = longer battery life.
- Can run Arduino bootloader, so developers have access to Arduino development libraries.
- I’ve designed 2 different boards. One using the RFM12B module at either 433Mhz or 915Mhz. The second board I’m going to try a 2.4GHZ design using Microchips FCC certified MRF24J40MA 802.15.4 module, this is purely experimental so I don’t have any testing done yet, but I have some of these modules and would like to try them out, also being FCC certified will be an added benefit. (not to mention I’ll be using these for a mesh sensor network project I have planned around the house)
- RFM12B board design has external SMA antenna.
- Base PCB board designs are done and I’m fairly happy with them so far, I’m just finishing a basic personality modules which I can used for testing and maybe another one so I can make up the max designs I can have on a single panelized board (may as well get the most designs I can get fabricated when I send it off to GoldPheonix). I’ve done some initial Eagle3D runs to get an idea of the boards and so I can post them on the blog, but I really need to learn how to create components in Eagle3D as it leaves unknown components blank, i.e. the RF modules and therefore looks incomplete. (anyone that can help me here please contact me)
Still To Do:
- Panelize boards
- Send to GoldPheonix for PCB fabrication.
- Assemble and test.
I’ve also been playing with learning Alibre, a fantastic 3D design package (they have a free version) so I can get some ideas for building enclosures design for these boards.