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
| Pin Label | Direction | Description |
|---|---|---|
| 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.
Additional Connectors
| Function | Description |
|---|---|
| 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 |
Active GNSS Power Source
