Power issues with Icomsat v1.1 GSM/GPRS Shield
hello everyone,
i'm doing project related sensor reading (sensors connected shield - http://imall.iteadstudio.com/im121211001.html) , outputting readings thingspeak server http posts (using shield - http://imall.iteadstudio.com/im120417009.html) connected arduino uno r3.
the problem i'm having power issues icomsat shield, usb/serial connection arduino-computer not enough power sim900 module in gsm shield decently (sometimes disconnects after few seconds).
after searching on few forums, came conclusion icomsat shield can take 2a (current), way more connection can offer, connected additional power souce arduino (mustang alkaline 9v battery), notice sim900 disconnects (although more rarely), when i'm using 2 shields (sensor shield + gsm shield) pilled in arduino.
is possible shield "steal" current other shield?
i notice if connect sensors (for exemple dht11 sensor and/or shinyei ppd42) sim900 module disconnects after while.
i'm having difficulties understanding how current evolves when connecting shields/sensors, , right power source use, since (for tested), powering arduino + gsm shield 9v battery not enough make running successfully.
i'm doing project related sensor reading (sensors connected shield - http://imall.iteadstudio.com/im121211001.html) , outputting readings thingspeak server http posts (using shield - http://imall.iteadstudio.com/im120417009.html) connected arduino uno r3.
the problem i'm having power issues icomsat shield, usb/serial connection arduino-computer not enough power sim900 module in gsm shield decently (sometimes disconnects after few seconds).
after searching on few forums, came conclusion icomsat shield can take 2a (current), way more connection can offer, connected additional power souce arduino (mustang alkaline 9v battery), notice sim900 disconnects (although more rarely), when i'm using 2 shields (sensor shield + gsm shield) pilled in arduino.
is possible shield "steal" current other shield?
i notice if connect sensors (for exemple dht11 sensor and/or shinyei ppd42) sim900 module disconnects after while.
i'm having difficulties understanding how current evolves when connecting shields/sensors, , right power source use, since (for tested), powering arduino + gsm shield 9v battery not enough make running successfully.
9v battery little square ones? few hundred mah.
you'll have better luck battery pack of 6 aas, cs, ds, or better 7.4 lipo cell (gets regulated down 5v on boards, yes?).
can high capacity lipos, 6000mah (6 ah).
if 5vs connected in parallel, strongest source end driving connected circuits.
you'll have better luck battery pack of 6 aas, cs, ds, or better 7.4 lipo cell (gets regulated down 5v on boards, yes?).
can high capacity lipos, 6000mah (6 ah).
if 5vs connected in parallel, strongest source end driving connected circuits.
Arduino Forum > Using Arduino > Networking, Protocols, and Devices (Moderator: fabioc84) > Power issues with Icomsat v1.1 GSM/GPRS Shield
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