SMART BMS CELL BALANCER · ESP32 CYD · CUSTOM FIRMWARE
The first published ESP32 CYD firmware for smart battery cell balancing and equalization. Touchscreen interface, sub-GHz radio coordination, intelligent power management — all running on custom-written firmware purpose-built for this niche.
The very first ESP32 CYD firmware written, monetized, and published on the open market for smart BMS cell balancing and equalization. Custom code from scratch — not a fork, not a library wrapper. Original firmware built for this specific niche.
── THE UNIT ──
One device. Four core components. Custom firmware. Everything you need for intelligent battery cell balancing, equalization, and BMS protocol decoding — in a touchscreen package.
ESP32 CYD touchscreen BMS tool with sub-GHz radio mesh, intelligent power management, and the first custom cell-balancing firmware written for ESP32 in this space.
HARDWARE + FIRMWARE
$450
MONTHLY SERVICE
$50/mo
Firmware updates · Cloud sync · Priority support
ORDER NOW →ESP32 CYD
Peripherals & interface. 2.8" ILI9341 touchscreen, dual-core 240 MHz, Wi-Fi + BLE, driving all I/O and real-time cell monitoring.
RFM69HCW
Radio & coordination module. 915 MHz sub-GHz link for multi-unit mesh, long-range telemetry, and coordinated balancing across packs.
ZX-052
Power management. Efficient buck/boost regulation, battery charging, and voltage rail management for the entire board.
SMART CELL BALANCER
Active equalization with per-cell voltage monitoring. Custom firmware-driven balancing algorithm with configurable thresholds and auto-cutoff.
── HARDWARE STACK ──
Four modules working as one. ESP32 CYD at the center, orchestrating radio, power, and cell balancing through custom firmware.
HARDWARE LAYERS
── CUSTOM FIRMWARE ──
Purpose-built firmware — not a fork, not a wrapper. Original code written from scratch for smart BMS cell balancing on the ESP32 CYD platform. First of its kind, published and monetized.
⚖️ ACTIVE CELL EQUALIZATION
Per-cell voltage monitoring with active charge redistribution. Firmware-driven balancing algorithm equalizes cells in real time, not just passive bleed resistors.
📊 TOUCHSCREEN DASHBOARD
Full GUI on the ESP32 CYD 2.8" display. Live cell voltages, balance status, temperature, radio mesh status — all interactive via capacitive touch.
📡 RADIO MESH COORDINATION
RFM69HCW-driven 915 MHz mesh network. Coordinate multiple balancer units across battery packs. Auto-discovery, encrypted links, long-range telemetry.
🛡️ SMART CUTOFF & PROTECTION
Automatic shutoff below configurable thresholds. Over-voltage, over-current, thermal shutdown, and reverse polarity — all firmware-enforced. Safety isn't optional.
🔄 OTA FIRMWARE UPDATES
Over-the-air updates via Wi-Fi. New features, improved algorithms, and bug fixes pushed directly to your unit. No cables, no reflashing.
🔓 BMS PROTOCOL DECODER
Built-in protocol decoding for Milwaukee, DeWalt, Makita, Ryobi, Bosch, and more. Read raw BMS data, cell voltages, cycle counts, and error codes directly.
── BMS PROTOCOL DECODER ──
Decode raw BMS communication data right on the touchscreen. See exactly what your battery's PCB is saying.
── CELL SAFETY ──
Not all cells can be saved. The firmware monitors voltage levels in real time and automatically adjusts balancing — or shuts down — before things get dangerous.
All safety thresholds are firmware-enforced and configurable via the touchscreen. Over-voltage, over-current, thermal shutdown, short-circuit, and reverse polarity protection are built into every layer. Auto-cutoff at 2.0V and 50°C.
── SUPPORTED BRANDS ──
The BMS protocol decoder speaks the language of every major tool battery on the market.
── PRICING ──
Hardware, firmware, touchscreen interface, radio module, power management, and smart cell balancer — all in one box.
$450
$50/mo
── THE FIRST CODE ──
The first successfully published and monetized ESP32 CYD firmware for smart BMS cell balancing. Custom-written from scratch. Get your unit and be part of the beginning.