The HA-Breakout circuit board provides flexible connectivity between your product/project and the LooUQ CTA device of your choosing, such as our LTE CAT-M1 IoT modem.
The HA-Breakout provides a standard 3.7/4.2 volt LiPo battery charger/manager circuit that provides power to the CTA device. Additionally, the HA-Breakout provides standard breadpoint spaced project connections via a 2.54mm (0.1 inch) pitch header connector or via a cable connection. Both straight-thru and right-angled headers are included in the kit to allow for easy breadboard configurations.
The CTA physical connection is completed by inserting the CTA on to the right-angled CTA connector, then pushing the CTA down on to the two snap-guides located at the top of the board. See the video below for a demonstration of this process.
Breakout/Breadboard Header Connections
|5V||CTA In||Power in; tied to the V-BUS pin of the micro-USB connector. Should not exceed 6 volts.|
|GND||CTA In||Power and signal ground|
|MOSI||CTA In||SPI bus Master-Out, Slave-In communications channel|
|MISO||CTA Out||SPI bus Master-In, Slave-Out communications channel|
|~CS||CTA In||SPI bus chip-select (also referred to as slave-select)|
|CLK||CTA In||SPI bus clock signal|
|~IRQ||CTA Out||Interrupt request, signals that an interrupt condition should be serviced|
|AuxTx||CTA In||Auxiliary or secondary data stream, UART data transmit (host to CTA)|
|AuxRx||CTA Out||Auxiliary or secondary data stream, UART data receive (CTA to host)|
|PwrKey||CTA In||Pulsed signal to toggle CTA power, see CTA for timing requirements|
|Reset||CTA In||Pulsed signal to reset CTA|
|Sleep||CTA In||Control signal to hold CTA in sleep (power conservation) state|
|Status||CTA Out||Status signal indicates that the CTA is powered on and in a ready state|
|Conn||CTA Out||Connected signal indicates that the CTA has established a connection and is data transmit ready|
|Event||CTA Out||New event ready signal, indicates that the CTA has a recent change (see CTA documentation for specifics)|
Note: Pin labels prefixed with ~ indicate that the signal is active low.
|USB (power-in)||Optional method to power the HA-Breakout and CTA. USB VBUS pin is tied directly to the 5V header pin.|
|Battery||JST PH-2 style LiPo battery connector. Some CTA devices, such as the LooUQ LTEM1 IoT modem require a LiPo battery connection to support temporary spikes in power demand.|
Note: LiPo capacity of at least 1200 mAh are recommended based on the configured charge rate of 505mA (2C).
|GNSS Antenna Power||Power for active GNSS antennas (3v-5v, typically 8-18mA). Not used for passive GNSS/GPS antennas.|
- J6 Sourced from 5V/USB (left)
- J3 Sourced from battery (right)
Upper pin - Ground, Lower pin - Power