# Beehive monitoring using Ceech board

• Hello,

I am using Ceech board (LTC4079) with 6v pannel

I have tried to adjust potentiometer but I am not sure to well understand the values :
Vcc = 3.28V
Charge current = 0.00mA
Solar cell voltage = 5.56V
Battery voltage = 4.03V
CHRG = 542

I read CHRG = 542 but Charge current = 0.00mA
If I turn a bit the portentiometer I have :

Vcc = 3.28V
Charge current = 79.91mA
Solar cell voltage = 4.95V
Battery voltage = 4.07V
CHRG = 0

What I understand is that charge current come from solar cell and CHRG is amount send to battery, am I right ?
Is it normal to nat have a positive value in both ?

ps: for now with full wires (power and network) it looks like http://jodaille.org/snapshots/
a daily timelapse and meteo/temperature sensors

• Charge current is the current that flows into the battery. And the CHRG signal indicates when charging occurs. CHRG is an active low signal. It means that charging works when this signal is 0 or close to zero.
Here is an explanation on how the trimmer works:

The viper is on the red line. Turn it counterclockwise till it reaches the 5V mark. This is a 5V setting. The other way around is for 18V solar panel setting.

• Hello Ceech,

@ceech said:

Charge current is the current that flows into the battery. And the CHRG signal indicates when charging occurs. CHRG is an active low signal. It means that charging works when this signal is 0 or close to zero.

So I think I have turned the trimmer too much

Your board is very useful, it is very nice to be able to monitor level battery and so on !

• Hello,

now it is charging \o/
Vcc = 3.28V
Charge current = 71.65mA
Solar cell voltage = 4.71V
Battery voltage = 3.97V
CHRG = 0

it was Battery voltage = 3.90V few minutes ago

• Hello,

we have successfully transmitted data over 233 m (apiary to labo) with RFM69.

• Hello Ceech,

your board is used with six ds18b20 sensors to monitor a hive:

http://www.dheaf.plus.com/monitor/monitor_v2.htm

• Great work.