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2 votes

Grounding sensors to large bodies

You can design SMD signal diodes on FPC strips with 3M thermal tape instead of thermistors then use analog Mux to an INA differential amp to reduce EMI with a 0.1 mA and use the diode thermometer ...
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1 vote

Port expander with high side switch ground dilemma

I think this will not work at all because of the very special input stage of the TBD62786. It's input signal is relative to VCC, not to GND. To control it by the I2C expander you must connect VCC of ...
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1 vote

Port expander with high side switch ground dilemma

With a constant current source, you would rather connect different LED channels in series than in parallel. To turn them off, you'd short them out individually with a MOSFET (given that the driver can ...
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1 vote

2 layer PCB grounding

On a PCB, copper is free, so setting one layer as ground plane doesn't cost extra, and it is better for signal integrity. That said, the datasheets of your radio modules probably mention something ...
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1 vote

2 layer PCB grounding

By convention, most signals are thought of as being relative to ground, although this is only a convention and there’s nothing that makes the integrity of the ‘low’ supply rail any more important than ...
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