I picked up a wireless GameBoy link at the mall last night. Only $9.99, so I ripped it open. Photos of the guts here:
!@#$ing nice! Thanks for the pics.
U1 is a wavecom part. I’ve seen similar ones in the pre-WiFi (mid-1990s) wireless home networking products.
U7 is a power amplifier attached to the antenna trace.
That’s all I know. Very cool.
-Nathan
Nathan:
CC2400 is from Chipcon.com. Mouser has them for $3.98. If I remember, the CC2420 comes with an onboard MCU.
I looked at these last year, but they require too many discretes to make it work for the real estate I have to work with.
I’m trying to fit everything into a 1.25" diameter package. I think I can do it with two boards stacked.
Good thing I stumbled onto your site, and found the Nordic parts. I was googling ADXL320. My prototype uses ADXL311’s, and I saw that they were not recommended for new designs.
I’m also going to try a couple of the STLIS3L02 parts from Digikey. They have all three axis in one chip, but are way more expensive ($20). It would lower the overall length of the end product a bit.
Oops. It’s the lower frequency Chipcon 1010 that comes with onboard MCU. The 2420 is ZIGBEE.
Chipcon - right.
Seems like a nice tight layout. You may have issues making it smaller - esp if you are soldering it by hand.
The STLIS3L02 part you mentioned doesn’t come up on digikey - is there an error in there somewhere? We are waiting for the Analog devices triple axis accel (ADXL330?). We are always interested in others.
-Nathan
Sorry Nathan. LIS3L02, not STLIS3L02
Data sheet says to add a buffer amp for each channel. Spec says it can only drive 100k ohms. Might get by driving an A/D directly though.