vmarzlin/valtronix-vtm0001-energymonitor

Isolated Power Energy Monitor with UART and interrupt

EnergyMonitor

valtronix-vtm0001-energymonitor's Issues

Wrong footprint for BLM18PG121SN1D ferrite beads

FB1-FB3 and FB6 are BLM18PG121SN1D in the BOM. They are using ValTronix:L_0805 footprint on the PCB but should use ValTronix:L_0603.

Wrong resistance value between 3V3D and 3V3A

The resistance R27 is a 100Ω, it should be a 10Ω.

UART signals polarity is inverted

When idle, RX and TX should be high level as we can see on the diagram below:

Source of the image: AmenophisIII, CC0, via Wikimedia Commons

The communication is not working with this issue as we can see on this capture (took on the output of an Arduino trying to communicate with this module):

Wrong footprint for 74LVC1G14 components

The reference used (in stock) is: 74LVC1G14W5-7 which is SOT-25 package.
The footprint used on PCB is: SOT-353_SC-70-5 which is smaller.

Footprint of all 74LVC1G14 components should be changed from SOT-353 to SOT-25.

Increase mounting hole diameter

Hole diameter is actually using M2 screws, should be better to use M3 (drill at 3.2 or 3.3mm)