Some cool battery graphs
I'm checking out the Costco GC2 batteries and Iota 55A converter as well as the new 16-bit a/d for Arduino. Prior to discharging the 208AH GC2 batteries, they were top charged with 16V for about ...
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I don't know how much electronic knowledge you have. Just a cautionary note. The a/d has a 4V supply voltage. That means you can not measure voltages greater than 4V. In order to measure battery voltage you first use a resistor divider to reduce voltage to a usable range for the a/d and then multiply the a/d output by a specific factor to get the actual voltage.
You don't need any resistor divider to measure shunt voltage. This voltage is down in the millivolts. In order to measure both charge and discharge currents you need two a/d channels, operating in differential mode. The a/d you're getting has 4 channels. One channel is used to measure battery voltage and 2 channels are used to measure current.
I use a separate 9.6V Ni-CD battery (and 5.3V dc/dc converter) to power Arduino. This particular battery was used in a remote control car for grandson. I think you will get a measurement error if you connect Arduino directly to house battery. You could get an isolated dc/dc converter to get power directly from house battery.
The first step with Arduino is to write code to make a led blink. It takes a few baby steps before getting to the stage of measuring and storing data.
You don't need any resistor divider to measure shunt voltage. This voltage is down in the millivolts. In order to measure both charge and discharge currents you need two a/d channels, operating in differential mode. The a/d you're getting has 4 channels. One channel is used to measure battery voltage and 2 channels are used to measure current.
I use a separate 9.6V Ni-CD battery (and 5.3V dc/dc converter) to power Arduino. This particular battery was used in a remote control car for grandson. I think you will get a measurement error if you connect Arduino directly to house battery. You could get an isolated dc/dc converter to get power directly from house battery.
The first step with Arduino is to write code to make a led blink. It takes a few baby steps before getting to the stage of measuring and storing data.
grizzzman wrote:
Ordered 2 temp sensors and the screen. I want live and stored data.
