I'm getting close to sending off my first fab-project - I'd be greatful if anyone could give it the once-over to see if I've missed anything
It's very simple - basically a generic LED driver/sequencer for model projects. There are 8 outputs, each using a ULN2803 darlington for additional power.
The Atmega is fed 5v through a LDO regulator, but the LED supply is taken from the unregulated side - this allows running off 4.5v if necessary without losing a large drop over the reg, but still using the reg to provide polarity reversal protection.
There is space for a series resistor in each output on the board for simple deployments - where more than one LED per output is needed, they can be added at the LED end and the on-board res can be omitted or bypassed by shorting the jumper pads on the bottom side.
There are 0.1u SMD decoupling caps under the 168, and a 1u tant for the regulator - is that sufficient?
2 inputs are brought out to JP1 to allow for 4 jumper selectable options. I've also brought out an ICSP jumper but may be doing the programming in my Arduino. Seemed wise to include it though.
Routing was significantly tidied up after autorouting.
Any feedback greatly received!