- Jul 11, 2004
- 21,867
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I just finished designing my first PCB design. Two layers, no ground planes allowed. I was a bit rushed in the layout and the last traces I placed are in no way optimal routed. What do you guys think?
(one of the power wires isn't connected, ignore that for the moment).
First PCB Design
Details:
Archaic 6811 microcontroller (512 bytes ram and rom)
8k external eeprom
16 bit SPI I/O Expander
graphical LCD header
2-axis accelerometer
2 x rotary encoders
power supply
programming headers
low voltage reset
Edit:
Updated PCB
I got a better LCD, so I changed the LCD header wires a bit.
I was using analog out from the accelerometer, then realized that I can't hook up a capacitive load to an ADC directly, so I just used the PWM output instead.
I also fattened up the power wires from 15 mil to 25 mil.
This got sent off to manufacturing already. It could use some changes, but I think it will be ok.
(one of the power wires isn't connected, ignore that for the moment).
First PCB Design
Details:
Archaic 6811 microcontroller (512 bytes ram and rom)
8k external eeprom
16 bit SPI I/O Expander
graphical LCD header
2-axis accelerometer
2 x rotary encoders
power supply
programming headers
low voltage reset
Edit:
Updated PCB
I got a better LCD, so I changed the LCD header wires a bit.
I was using analog out from the accelerometer, then realized that I can't hook up a capacitive load to an ADC directly, so I just used the PWM output instead.
I also fattened up the power wires from 15 mil to 25 mil.
This got sent off to manufacturing already. It could use some changes, but I think it will be ok.