nsayer

Santa Clara, CA

http://www.kfu.com/~nsayer/

I like poker
Sep
16
awarded Yearling
Sep
16
awarded Yearling
Sep
9
comment Soft-power MOSFET circuit leaks - what to do?
I can have the software force the power pin low rather than float it to power-off. In !RESET it will be floating anyway, but we'll see if power-down becomes unreliable. Hopefully not. I'll post an answer recapping the changes once the new boards arrive and are tested. Thanks everyone.
Sep
9
comment Soft-power MOSFET circuit leaks - what to do?
Is it enough to use an N channel MOSFET for the microcontroller to pull !PWR low (gate to pin, source to ground, drain to !PWR)?
Sep
9
asked Soft-power MOSFET circuit leaks - what to do?
Aug
27
answered Maven dependency unpack - skip top level directory
Aug
27
revised Maven dependency unpack - skip top level directory
added 198 characters in body
Aug
27
asked Maven dependency unpack - skip top level directory
Aug
23
comment Audio amp causing microcontroller glitching - how to better decouple?
@davidcary Pull-ups for the switches are present in the microcontroller. The purpose of the diodes is to allow any one of them to turn the soft-power on while still allowing the controller to see 4 separate switches.
Aug
23
comment Audio amp causing microcontroller glitching - how to better decouple?
@BruceAbbott Hmm. That may be the answer. Maybe the TPS613221ADBVT might work better, but that means a new PCB.
Aug
22
comment Audio amp causing microcontroller glitching - how to better decouple?
When the amp is powered from the soft-power MOSFET drain (Q8) everything works fine.
Aug
22
awarded Custodian
Aug
22
revised Audio amp causing microcontroller glitching - how to better decouple?
added 299 characters in body
Aug
22
reviewed Reject suggested edit on Audio amp causing microcontroller glitching - how to better decouple?
Aug
22
comment Audio amp causing microcontroller glitching - how to better decouple?
The XC9142 is rated at 800 mA output at 3.3v - more than 2 1/2 watts.
Aug
22
comment Audio amp causing microcontroller glitching - how to better decouple?
It's an ATXMega32E5.
Aug
22
asked Audio amp causing microcontroller glitching - how to better decouple?
Aug
12
accepted LED matrix - MOSFET driver leakage?
Aug
12
revised LED matrix - MOSFET driver leakage?
added 97 characters in body
Aug
11
asked LED matrix - MOSFET driver leakage?
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