2 relays WIFI commutation
just 1 strap for single face PCB
This board can be powered through differents kind of powers :
from the H1 connect a LIPO battery (deepsleep available shunt GPIO16 to RST pins)
from the H1 connector DC 3V3 directly (shunt in&out AMS1117 pins and use 3V3 relays)
from the H1 connector DC input from 5V to 15V (adapt the relays' voltage)
using a AC/DC power converter HLK-PM01...
this is simple project that collect temperature and humidity from DHT11 or DHT22 and broadcast it in the network using protocol UDP
# software #
# hardware #
1) esp8266 wemos d1 mini or nodemcu
2) DHT11 or DHT22
visit my github repository to find qt app for android phone :
code source: https://github.com/salim97/My-Weather-Gadget
wiki : https://github.com/salim97/My...
Enhanced version of the ESP8266 Prototype board
- MCP1702-3302E voltage regulator, LM1117 possible
- Smaller PCB
- Identification of GPIO
[Link to the site of the maker (english)]
I got sick of wiring up ESP-12 on the simple breakout boards to external devices where you needed extra VCC and GND connections. The nodeMcu version have the built in serial and regulator that are not much good for low power.
So this is my alternative, focused around I2C and mainline I/O with VCC and GND close by, as well as options for configuring the reset pin, for wake up and external
ESP8266 programmer using test probes
test probes available over ebay:
P75-B1 Dia 1.02mm 100g Cusp Spear Spring Loaded Test Probes Pogo Pins
P50-B1 Dia 0.68mm Length 16mm 75g Spring Pressure Test Probe Pogo Pin
connect USB to TTL convert as interface :
USB to TTL Converter UART Module CH340G CH340 3.3V 5V Switch Cable
EPSOLAR VS6048 Charge Controller (CC) has a MODBUS port. Vital data is available for use M&E of the PV system to which the CC is attached.
A NodeMCU based EPSOLAR VS6048 CC Monitoring system is implemented using MAX485 to get data from two CCs attached to a 48 VDC battery system in our offgrid home.