There follows a series of photos covering the build of board #2. Board #1 was build very quickly to perform initial design proving tasks and not all connectors or features were available. Board #2 was built with all the correct connectors with the exception, at the time of the extended shield connectors, uSD socket and the real-time clock chip and associated components.
The bare pcb, we’ve got to start somewhere!
Resistors and diode added:
Capacitors and crystal:
Main dip socket and xbee sockets:
The rest of the header sockets:
Electrolytic caps, reset switch, LEDs and voltage regulator (Note this regulator is wrong type and pinout is different to one specified in schematic, hence reason why it looks to be wrong way round to that on the silk screen):
Added ATMega1284P, Wiznet and RN-XV module to show options available:
End view showing LEDs and connectors. Green is power LED, other is a Blue LED connected to PWM capable output:
After the photos were taken the RFM12B module was added and bootloader programmed onto the new ATMega1284P. Further tests are being carried out to prove the design and locate any flaws and improvements that can be made.
Using the an atmega1284p, and wiznet 5200 based ethernet modules, the max1284 represents a cost effective arduino compatible ethernet enabled gateway. With 128k of flash, and 16k of ram restrictions imposed by previous solutions based around the atmega328 are removed.
More pictures, and full specifications after the break. (more…)