EpEver Solar Monitor

Ongoing

STD EpEver Solar Monitor

License: Public Domain

Mode:

Editors' pick

Update time： 2023-11-06 04:44:19

Creation time： 2022-12-11 10:17:53

Description

Monitor your EpEver Solar Charger via MQTT using this PCB and the following components:

- Wemos D1 mini

- MAX485

- RJ45 Female Connector

- 6K7 Resistor

- Jumpers (To enable wake up after sleep)

Flash the firmware from this repo. I also got all my information from to build this PCB:

Adjust your setting and it should send all data over MQTT.

NodeRed receives the MQTT and routs the data to a InfluxDB database. Grafana reads the InflusDB and visualizes the data just beautifully :)

"Wake Up" jumper needs to be connected to be able to wake up drom deep sleep

"Debug Mode" Jumper to enable debug-mode. this sets the sleep duration to only 10 seconds

some datasheets list different pinouts for the RJ45 jack! swap A<->B if connection fails. Check voltage-level and -polarity before connecting!

Design Drawing

schematic diagram

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PCB

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BOM

ID	Name	Designator	Footprint	Quantity	BOM_Manufacturer Part
1	Wake Up	P1	CONNECTOR_PINHEADER_2.54MM:PINHEADER_1X11_P_2.54MM	1	Female headerHDR1X8-2.54
2	Debug Mode	P2	CONNECTOR_PINHEADER_2.54MM:PINHEADER_1X11_P_2.54MM	1	Female headerHDR1X8-2.54
3	6.8K	R1	RES-TH_BD2.2-L6.5-P10.50-D0.6	1	MFR0W4F6801A50
4	R-RJ45R08P-C000	RJ1	RJ45-TH_R-RJ45R08P-C000	1	R-RJ45R08P-C000
5	MAX485 Module	U1	MAX485-MODULE-SIPPY	1	MAX485 Module
6	WEMOS D1 MINI / ESP32 MINI KIT INNER	U2	WEMOS-D1-MINI-CONNECTORS-ONLY	1	Wemos_D1_mini_Pro4