Multisensor node using Ceech board

[ceech]

@rollercontainer The potentiometer is adjusting the voltage at which the solar panel is operating at its maximum power. It is so called MPPT. Just set it to the solar panel's nominal voltage.
When the voltage on the solar panel is reduced (is in shade or we want to extract too much from it), the charger reduces the charging current in order to prevent the solar panel from collapsing entirely.

[rollercontainer]

D'oh! I thought, the wiper of the trimmer is at the flat side, but its opposite to the flat, got it finally. Now pimatic is showing a current (0.74A).

[Fraid]

Hi everyone, I'm new to arduino, and I bougth Ceech board.
Can someone please let me know how to upload sketch on this board? I read it's compatible with arduino but I can't find any wiring schema.
Also where is A7/CHRG ? Because my board go from analog A0 to A5.
And I bought the following one :
http://www.ebay.com/itm/331838940273?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

I just want a solar/battery powered sensor. And I have anduino nano.
Thank

[alexsh1]

@Fraid-DIRON welcome to the forum! This is beginners question and I would suggest you browse www.arduino.cc
You will find tons of international on that web-site concerning programming Arduino in general. This is how I was learning it.

Concerning Ceech's board, it is programmed the same way as any Arduino Pro or Arduino Pro Mini - with a help of FTDI USB to TTL converter (there are many on eBay) connected to the 6 angled pins on the board.

This link is for Pro Mini, but Pro (Ceech's board) is programmed in exactly the same way:
https://www.arduino.cc/en/Guide/ArduinoProMini

[Fraid]

@alexsh1 said:

FTDI
Ohh thank you @alexsh1 , and my bad, you made me realize that Ceech's board as the ATMega. Now that make more sense the A7 is the analog pin 7 that is linked with the CHRG of LTC4067. Anyway Thanks :D !

[alexsh1]

@Fraid-DIRON No worries

[rollercontainer]

Can someone explain, why the charger isnt charging all the time or at least earlier? BattVoltage is 3.96V on the right end. Is the cell considered full?

[ceech]

@rollercontainer For some reason current started to drop. Once it reached C/10 (around 10mA), charger stopped charging. This is a programmed function.
I can see two reasons why the current started to drop. Voltage readings might be off for one. Or the battery doesn't accept charge above 4V. Its internal resistance might risen.

Late charge start might indicate wrong voltage readings. If we assume that in the morning the voltage is 4.2V, then at 11 o'clock the voltage dropped just enough for the charger to start charging (also a programmed feature).

[MikeF]

I've built nodes using two versions of the Ceech board intended for solar cells - one with the LTC4079 charger, the other with the earlier LTC4067 charger.

I now want to use one of these as a pulse power sensor without sleep (as per MySensors example sketch), so it needs to be on non-battery power, i.e., from a 5V USB charger. If I remove the battery, which input should I connect the 5V to: the battery input or the solar input?

[alexsh1]

@MikeF Definitely the solar input. (Battery max voltage is 4.2V fully charged)

[ceech]

On the board with the LTC4079 there is a voltage regulator behind the input, so you can use battery connector. On the board with the LTC4067 use the VIN pin on the bottom connector.

[jumping]

Hello,
I use a My Sensors 2.0 version of "Multisensor node using @ceech board" but I have this error:

TSP:MSG:SEND 5-5-0-0 s=255,c=3,t=11,pt=0,l=12,sg=0,ft=1,st=ok:JMP-LightLux
TSP:MSG:SEND 5-5-0-0 s=255,c=3,t=12,pt=0,l=3,sg=0,ft=0,st=ok:1.0
TSP:MSG:SEND 5-5-0-0 s=10,c=0,t=13,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 5-5-0-0 s=11,c=0,t=13,pt=0,l=0,sg=0,ft=0,st=ok:
TSP:MSG:SEND 5-5-0-0 s=1,c=0,t=16,pt=0,l=0,sg=0,ft=0,st=ok:
Request registration...
TSP:MSG:SEND 5-5-0-0 s=255,c=3,t=26,pt=1,l=1,sg=0,ft=0,st=ok:2
TSP:MSG:READ 0-0-5 s=255,c=3,t=27,pt=1,l=1,sg=0:1
Node registration=1
Init complete, id=5, parent=0, distance=1, registration=1
BH1750 lux: 387TSP:MSG:SEND 5-5-0-0 s=1,c=1,t=37,pt=3,l=2,sg=0,ft=0,st=ok:387

Batt: 3.74V ; 414.08mA 
Solar: 0.00V ; 0.00 mA; charge: Yes
BattPct: 61% 
TSP:MSG:SEND 5-5-0-0 s=10,c=1,t=38,pt=7,l=5,sg=0,ft=0,st=ok:3.738
TSP:MSG:SEND 5-5-0-0 s=10,c=1,t=39,pt=7,l=5,sg=0,ft=0,st=ok:0.414
TSP:MSG:SEND 5-5-0-0 s=11,c=1,t=38,pt=7,l=5,sg=0,ft=0,st=ok:0.000
TSP:MSG:SEND 5-5-0-0 s=11,c=1,t=39,pt=7,l=5,sg=0,ft=0,st=ok:0.000
!TSP:MSG:SEND 5-5-0-0 s=255,c=3,t=0,pt=1,l=1,sg=0,ft=0,st=fail:61

after that the node doesn't send data to gateway.
Do you have some ideas to solve the problem?
thanks