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
|Power in; tied to the V-BUS pin of the micro-USB connector. Should not exceed 6 volts.
|Power and signal ground
|SPI bus Master-Out, Slave-In communications channel
|SPI bus Master-In, Slave-Out communications channel
|SPI bus chip-select (also referred to as slave-select)
|SPI bus clock signal
|Interrupt request, signals that an interrupt condition should be serviced
|Auxiliary or secondary data stream, UART data transmit (host to CTA)
|Auxiliary or secondary data stream, UART data receive (CTA to host)
|Pulsed signal to toggle CTA power, see CTA for timing requirements
|Pulsed signal to reset CTA
|Control signal to hold CTA in sleep (power conservation) state
|Status signal indicates that the CTA is powered on and in a ready state
|Connected signal indicates that the CTA has established a connection and is data transmit ready
|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.
|Optional method to power the HA-Breakout and CTA. USB VBUS pin is tied directly to the 5V header pin.
|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