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servalproject / openwrt

OpenWRT distribution for Serval Mesh Extenders
https://developer.servalproject.org
GNU General Public License v2.0
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Fix bootstrap pull-up/pull-down resistance on rev2 PCB #12

Open gardners opened 7 years ago

gardners commented 7 years ago

Some of the bootstrap lines are marginal, in particular, the one that controls whether the Atheros 9331 boots from its internal ROM (wrong) or serial flash (correct).

We added a 2K resister in parallel to the existing resistor to fix this problem. This suggests that the current pull-up/down resistors for the bootstraps should be reduced to around this size.

gardners commented 7 years ago

The WR703N used 10K resisters, rather than the 49K resisters on the rev2 PCB (http://squonk42.github.io/TL-WR703N/). We should therefore move to 10K resisters for all of these.