yefj
Advanced Member level 4
Hello, i have 4 types of components on my board shown bellow
power supply :
Mini Power Supply Module HW-131 Breadboard Power Module 3.3V/5V Power Supply Module for Arduino MB102 Breadboard
The first one is the Nodemcu ,i have two of those with the pinout map shown bellow.
The second is : LM35DZ TO-92 LM35 Precision Centigrade Temperature Sensor with the datasheet shown bellow
.
from the data sheet we can see that it needs at least 4 volts.
The third component is : MCP3421 I2C SOT23-6 Delta-Sigma ADC with the data sheet shown bellow.
The 4th type is EFR32fg14 expantion header : from page 9 of the data sheet shown bellow.
On the bottom side of the board i have USB connection which produces 3.3V and 5V simultaniosly.
And i have the Brain wires which is the EFR32 expansion header which controlles the ADC and it has 3.3V and 5V.
So i have 2 different independant power sources. and i have a senson which needs 5 V the ADC which need 3.3 and NODE MCU which is powered by micro USB .
I dont want to power the NODEMCU devices by microusb,i want to use the general power sources(either from efr32 expantion header or the bottom power supply on the board)
another problem is the GND of all of them.
How do you recommend connecting the SUPPLY and GND of all the devices on the board bellow?
Thanks.
power supply :
Mini Power Supply Module HW-131 Breadboard Power Module 3.3V/5V Power Supply Module for Arduino MB102 Breadboard
Mini Power Supply Module HW-131 Breadboard Power Module 3.3V/5V Power Supply Module for Arduino MB102 Breadboard
Mini Power Supply Module HW-131 Breadboard Power Module 3.3V/5V Power Supply Module for Arduino MB102 Breadboard
www.cafago.com
The first one is the Nodemcu ,i have two of those with the pinout map shown bellow.
The second is : LM35DZ TO-92 LM35 Precision Centigrade Temperature Sensor with the datasheet shown bellow
.
from the data sheet we can see that it needs at least 4 volts.
The third component is : MCP3421 I2C SOT23-6 Delta-Sigma ADC with the data sheet shown bellow.
The 4th type is EFR32fg14 expantion header : from page 9 of the data sheet shown bellow.
On the bottom side of the board i have USB connection which produces 3.3V and 5V simultaniosly.
And i have the Brain wires which is the EFR32 expansion header which controlles the ADC and it has 3.3V and 5V.
So i have 2 different independant power sources. and i have a senson which needs 5 V the ADC which need 3.3 and NODE MCU which is powered by micro USB .
I dont want to power the NODEMCU devices by microusb,i want to use the general power sources(either from efr32 expantion header or the bottom power supply on the board)
another problem is the GND of all of them.
How do you recommend connecting the SUPPLY and GND of all the devices on the board bellow?
Thanks.
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