Waveshare Pico UPS-B shield
Overview
The Waveshare Pico UPS-B shield is an uninterruptible Power supply (UPS) module designed for the Raspberry Pi Pico which uses the Texas Instruments’ INA219 current/power Monitor. It communicates with the Raspberry Pi Pico over I2C
Waveshare Pico UPS-B shield
Hardware
INA219
Senses bus voltages from 0 to 26 V
Reports current, voltage and power
16 Programmable Addresses
SOT23-8 and SOIC-8 packages
Calibration registers
ETA6003
Switching charger with power path management
Up to 95% DC-DC efficiency
0mΩ power path MOSFET
Up to 2.5A max charging current
Connectivity
Raspberry Pi Pico compatible (I2C)
2 pin jst header for Li-po battery
——-+———————–+—————————+ | Name | Function | Usage | +=======+=======================+===========================+ | GP0 | None | | +——-+———————–+—————————+ | GP1 | None | | +——-+———————–+—————————+ | GP2 | None | | +——-+———————–+—————————+ | GP3 | None | | +——-+———————–+—————————+ | GP4 | None | | +——-+———————–+—————————+ | GP5 | None | | +——-+———————–+—————————+ | GP6 | I2C1_SDA ACTIVE_LOW | INA219 | +——-+———————–+—————————+ | GP7 | I2C1_SCL ACTIVE_LOW | INA219 | +——-+———————–+—————————+ | GP8 | None | | +——-+———————–+—————————+ | GP9 | None | | +——-+———————–+—————————+ | GP10 | None | | +——-+———————–+—————————+ | GP11 | None | | +——-+———————–+—————————+ | GP12 | None | | +——-+———————–+—————————+ | GP13 | None | | +——-+———————–+—————————+ | GP14 | None | | +——-+———————–+—————————+ | GP15 | None | | +——-+———————–+—————————+ | GP16 | None | | +——-+———————–+—————————+ | GP17 | None | | +——-+———————–+—————————+ | GP18 | None | | +——-+———————–+—————————+ | GP19 | None | | +——-+———————–+—————————+ | GP20 | None | | +——-+———————–+—————————+ | GP21 | None | | +——-+———————–+—————————+ | GP22 | None | | +——-+———————–+—————————+ | GP23 | None | | +——-+———————–+—————————+ | GP24 | None | | +——-+———————–+—————————+ | GP25 | None | | +——-+———————–+—————————+ | GP26 | None | | +——-+———————–+—————————+ | GP27 | None | | +——-+———————–+—————————+ | GP28 | None | | +——-+———————–+—————————+
Power Supply
3.3V ~ 5V
Components
Power switch
Power LED
Charging LED
For more information about the Waveshare Pico UPS-B:
Programming
Set --shield waveshare_pico_ups_b when you invoke west build or cmake in your Zephyr application. For
example:
Using west:
# From the root of the zephyr repository
west build -b rpi_pico --shield waveshare_pico_ups_b samples/sensor/ina219
west flash
Using CMake and ninja:
# From the root of the zephyr repository
# Use cmake to configure a Ninja-based buildsystem:
cmake -Bbuild -GNinja -DBOARD=rpi_pico -DSHIELD="waveshare_pico_ups_b" samples/sensor/ina219
# Now run the build tool on the generated build system:
ninja -Cbuild
ninja -Cbuild flash