This is my first real project that I (and the rest of the internet) is building it from the ground up.
Once complete it will replace three Off/On Light Switch in the hallway and will be part of my house IoT.
The Prototype Seems to work well, but my knowledge of Power management is very limited. Any Best Practices (With Math) would be wonderful.
So the Wireless esp8266 modules control 3 relays. Thou I use a Transistor to trigger the relay, they still pull a lot of current from the 3v power supply when the coils are energized at the same time. I am fearful that the Power module will drop enough that the esp micro processer will fail.
This made me ask myself how can you determine priority within a circuit?
I want to make sure that the esp8266 is protected from voltage spikes/drops but not sure what way I can do that.
I read that a capacitor between the VCC and Ground would stop spikes and drops from effecting the esp8266, but not sure how to calculate the size?
Friends from another forum said to be careful of not over caping the power module, but not sure what math I use to do that.
this lead to even more questions:
( Question 2) Would it be better to go with a 5v 3w Power module and 5 volt relays and then step down to 3.3v for the ESP8266.
( Question 3) If I did step down, what would be best practice? A stepdown Buck, Voltage Regulator, or voltage divider ?
Here is some Reference Material
Relay Datasheet 3v
https://www.ghielectronics.com/downloads/man/20084141716341001RelayX1.pdf
http://lygte-info.dk/review/Power Mains to 5V 0.6A Hi-Link HLK-PM01 UK.html
ESP8266 – Datasheet
https://cdn-shop.adafruit.com/datasheets/ESP8266_Specifications_English.pdf
I also Included my Eagle design
Once complete it will replace three Off/On Light Switch in the hallway and will be part of my house IoT.
The Prototype Seems to work well, but my knowledge of Power management is very limited. Any Best Practices (With Math) would be wonderful.
So the Wireless esp8266 modules control 3 relays. Thou I use a Transistor to trigger the relay, they still pull a lot of current from the 3v power supply when the coils are energized at the same time. I am fearful that the Power module will drop enough that the esp micro processer will fail.
This made me ask myself how can you determine priority within a circuit?
I want to make sure that the esp8266 is protected from voltage spikes/drops but not sure what way I can do that.
I read that a capacitor between the VCC and Ground would stop spikes and drops from effecting the esp8266, but not sure how to calculate the size?
Friends from another forum said to be careful of not over caping the power module, but not sure what math I use to do that.
this lead to even more questions:
( Question 2) Would it be better to go with a 5v 3w Power module and 5 volt relays and then step down to 3.3v for the ESP8266.
( Question 3) If I did step down, what would be best practice? A stepdown Buck, Voltage Regulator, or voltage divider ?
Here is some Reference Material
Relay Datasheet 3v
https://www.ghielectronics.com/downloads/man/20084141716341001RelayX1.pdf
http://lygte-info.dk/review/Power Mains to 5V 0.6A Hi-Link HLK-PM01 UK.html
ESP8266 – Datasheet
https://cdn-shop.adafruit.com/datasheets/ESP8266_Specifications_English.pdf
I also Included my Eagle design