PwrTool 500 is a power shunt and battery monitor. It is built on the FLIP_C3 development board, providing GPIO expandability, and is equipped with a powerful 5V, 2A buck converter, a 16-bit current sensing ADC, a temperature/humidity sensor, and a 45W MOSFET for external control. What makes the PwrTool 500 stand out is its ability to provide both high-side and low-side shunt functionality in a single tool, and it can monitor currents up to 500A in 12-48V systems.
After receiving PwrTool 500, users can start using it immediately without complicated setup. PwrTool 500 can seamlessly integrate with Home Assistant. Users can customize its functionality through ESPHome, or if they are not satisfied with the existing features, they can access more options with Arduino or ESP-IDF compatible code.
Users can place PwrTool 500 and similar products anywhere in a DC system. For instance, placing it on the battery allows for monitoring its condition and state of charge through coulomb counting. Using two shunts to separate the load and input provides a clearer understanding of the power flow and sources.
Most shunts of this type are only for the "low-voltage" or "cold" side, with the shunt itself inserted into the ground path of the system. In this case, sometimes intercepting the ground path can result in inaccurate readings. Therefore, to improve the user experience, an option has been built in to switch the polarity of PwrTool 500.
6-60 VDC system voltage: Compatible with all lithium and lead-acid batteries
500 A peak / 300 A constant current shunt
45 W N-Channel MOSFET
This project is built by Chloe Parfitt, and will crowdfund on CrowdSupply, check PwrTool 500 for more info.
Welcome to support it if you are interested.
