Hello,
I was wondering is there an AREF (Analog reference) input in the EL Sequencer, for calibrating the Analog input to 3.3V?
I want to connect a microphone which is driven by the 3.3V output.
Greetings. Thanks for posting.
There is an AREF pin(20) which is tied to VCC, however, it does not seem like this pin is broken out onto an interface pin on the PCB. I don’t think there is an easy way to access this pin I am afaid.
I can clearly recognize 20 numbered pin holes around the microcontroller, additionally to the 8 directly at the edge.
Could you point me to a piece of documentation about what those 20 pinholes are mapped to?
They have a distance of 2mm, instead of the usual 2,45mm, but I should be able to solder them…
They are for an xbee module. The schematic can be found at https://cdn.sparkfun.com/datasheets/Com … er_v23.pdf
/mike