Changes

GTA04A5 schematics.

What is different to GTA04A4?

• the GPS receiver can provide a 1 second impulse to the CPU
• the infrared receiver can be powered off together with RS232 (it was alternatively before)
• some sensors have been upgraded to non-obsolete versions (e.g. BMP085 and BMA180 are EOL)
• WLAN/BT power controlled through GPIOs (so that VAUX4 is unused)
• 10-pin ZIF connector for external keyboard or other I2C devices
• it is possible to use a new earpiece (from Knowles) so that we finally can offer a case kit
• the GPS antenna switch has been redesigned
• improved headset detection hardware
• CPU will be always 1 GHz and bigger Memory
• UMTS module may have newer firmware (tbc.)
• there is a plan for a 3D printed case (approx. 50 EUR) with integrated pen for the touch
• there will be 3D data (STEP) of the PCB and components so that you can design your own case around every bit and piece