Cell Simulator

This cell-sim is designed to mimic a LiPo battery pack for develpoment of the surrounding electronics, like a BMS.

• 16 channels
• Open-Source hardware design, you can embed onto your own HIL setup
• ⚡️ 0-4.5V and 0-500mA per channel
• DMM muxed to each channel for arbitarily precise measurment
• Open-circuit simulation on each channel
• 📏 16bit ADC feedback for voltage and current
• 🔌 USB w/ Python software interface (+ 100MBit Ethernet + WiFi waiting for firmware support)

Design overview

Getting Started

1. Install python if you don't have it already
2. Install the requirements pip install -r requirements.txt
3. Connect the board via USB
4. Power the board with the 12V input (supply: 1A minimum, 3A recommended)
5. Run the example python script python example_set_voltages.py
6. Voltages should be set to 3.5V, then rainbow from 1V to 4V across the 16 channels and current should be close to 0A.

You should see something like this:

Notes

1. To get best low noise performance, use a quality power supply for the input supply.

Firmware

Update Firmware

We use PlatformIO to build and upload the firmware via USB.

1. Install PlatformIO: https://platformio.org/install
2. Connect the board via USB (might need to accept connection popup on Mac)
3. Run pio run -t upload or install the PlatformIO VSCode extension and use the upload button.