Hi everybody, I have just finished this low cost version of APM2.5 because it's difficult to buy a original board in my country, so I decided to build my own hardware with two layers PCB :)
I have solved some bugs in hw such as:
I also added a filter for AVCC for better adc result:
Modified PPM Encoder which is more simple in connection than original:
with one 3.3V SPI extension to connect with other 3.3V SPI device
The hardware worked well. data from sensor:
Next test, set up it to frame with full supports for a quadcopter and...fly
This version costs about $53, nice price, hah ^^
Some pictures (Dimension: 56mm x 56mm)
Bottom, I'd like to change original name for my new board? Is it OK?
I'm considering to open this hardware after I finished all test for this board. Someone can tell me any legacy problem when I share my Altium design to open source community?
Note: xtPilot is a modified hardware based on the APM2.5 open-hardware project.