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radhoo / uradmonitor_kit1

A hackable open source sensor IoT board with network interface. A DIY Geiger counter KIT to contribute readings to the uRADMonitor network.
http://www.uradmonitor.com/open-source-uradmonitor-kit1/
GNU General Public License v3.0
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Regulator voltage #12

Closed jetty840 closed 7 years ago

jetty840 commented 7 years ago

The regulator voltage of 3.0V is too low. The minimum for the ENC28J60 is 3.1V according to the datasheet, and I've noticed erratic behavior in the 2.9V - 3.0V range which is around the level of the low battery indicator. For example, at 2.95V my ENC28J60 won't startup 50% of the time.

I suggest 3.3V for the regulator if using ethernet.

radhoo commented 7 years ago

v1.2.105 and newer uses the AMS1117 3.3V regulator.