ZigBee module
Project definition
Main task is to create universal ZigBee module for Wireless Sensor Networks. Our target is to desing cheap and recongugure platform for various procesors(Atmel, Texas Instruments, ARM7 and etc). Currtenly now, we have in progress our first design of main board with AVR ATmega88 processor and Freescale MC13192 radio.
Developing phase
29.11.2007 Project comeback! Due to some studdy responsibilities, I have to stop this project. Now I have enough time to comeback to this projet. I wrote my own test application (the reference one seems not working for me) and begin again. Now I can receve message from another zigbee design: Tmote sky. From incredible long distance - 4cm. Soon i will go to test sending data from minibee to Tmote. I thing that I have big problem with soldering or antena is not working.
29.6.2007 Finally now i have enough time to do something with radio. I destroyed one ATmega MCU (I have no idea why). Today I have two working DPS with radio. Im going to test them next week. I found one problem with timing - original application shoud using 57kbps baudrate, but its worikng somewhere around 17kbps.
6.6.2007 First radio is probably working. I can talk with him via SPI interface. Now I'm going to study radio datasheet for sending wireless messages.
24.4.2007. MCU is working but i cant wakeup radio. Im waiting for crystalic resonators from krystaly.cz.
28.3.2007 PCBs are re-soldered, but not working. I thing that its bad crystal rezonators.
24.3.2007 I had bought wrong CPU unit. Its necessarily to use ATmega88-20AU. Due to using 16MHz and 3.3V.
23.3.2007 First soldered layout is done so Im going to test it.
21.3.2007 I have big problems with sub-manufactuer. They are not able to transfer to me soldered PCB layouts. Unfortunately I havent contract with them... I had sent PCB to Pragoboard - PCB producer. Im expecting them on 22.3. After recieve Im going to solder them manually.
5.2.2007 PCB design is done. PCB was passed on to the manufacturer Cybertex.
x.1.2007 Im finishing PCB design, which is copy of MiniBee from Anteeo systems (see link below).