Charging from Solar via the Expansion Board

[bradnz]

Hi

If I had a Solar panel (6V, 1W) connected to the USB port, could this load share with the SiPy AND a LiPo without any concerns? Im more concerned about the ability to charge the Battery at the same time as the battery (or the Solar panel) powering the load - not all charge ICs allow this in the right way.

[Acme1999]

@maamar

i've a strange behaviour:

main.py

from pysense import Pysense
from MPL3115A2 import MPL3115A2
from SI7006A20 import SI7006A20
from LTR329ALS01 import LTR329ALS01
from network import Sigfox
import socket
import time
import struct
import network

wlan = network.WLAN();
wlan.deinit();

while True:

py = Pysense();
mp = MPL3115A2();
si = SI7006A20();
lt = LTR329ALS01();
sigfox = Sigfox(mode=Sigfox.SIGFOX, rcz=Sigfox.RCZ1);

#temperature -10000 - 10000
temp = int(round(si.temperature()*100,2));

#humidity 10000 - 0
hum = int(round(si.humidity()*100,0));

#pressure -13000 - 8560
pres = int(round(mp.pressure(),0))-100000;

#blue light
blue = lt.light()[0];

#red light
red = lt.light()[1];

#message
message = bytes(struct.pack('>hhhhh',temp,hum,pres,blue,red));

s = socket.socket(socket.AF_SIGFOX, socket.SOCK_RAW);
s.setblocking(True);
s.setsockopt(socket.SOL_SIGFOX, socket.SO_RX, False);
s.send(message);
s.close();
py.setup_sleep(60);
py.go_to_sleep();

If i supply the pysense by usb all works fine, but if i supply it by 5V and GND (first and second pin on the top rigth corner) the Sipy sends only one message.

Do you have any suggestions?

[Acme1999]

@maamar Thanks. It works.

[maamar]

@acme1999 in the Out+ and Out- connect it to th USB vcc and gnd respectively

[Acme1999]

@maamar i've a configutation like yours, can you explain me how to connect the tp4056 to a Pysense or a Sipy? Thanks in advance.

[maamar]

Here my config,
Solar Panel 5v@400mA connected to TP4056
Batterie 3000mA connected to TP4056
and the TP4056 connected to Lopy
it works fine