OverMiners

Hardware for the Kaspa community

Open-source Kaspa miner hardware for hobbyists and lottery hunters. Built on commodity ESP32 boards, flashed with our firmware, and monitored via OverManager.

Important: OverMiner Nano and Lite are ultra-low hashrate devices. Mining will only produce valid shares on the OverBuild Labs Solo Mining Pool, which is specifically modified to accept fractional difficulty. Do not expect other pools to support the low difficulty required by these devices. Hardware terms & disclaimers.

OverMiner Nano

Available • v1.0.0

Pocket-sized Kaspa lottery miner with a touchscreen

Price: ~$15 hardware (DIY firmware flash)

Hardware

Board: ESP32-2432S028R (Cheap Yellow Display)
Display: 2.8" 240×320 resistive touchscreen
Connectivity: WiFi 2.4GHz + Bluetooth (unused)
Memory: 4 MB flash, no PSRAM
Power: USB-Micro (power + flashing)
Hashrate: ~1 KH/s (kHeavyHash, lottery-tier)

Features

Stratum to any Kaspa pool
Captive-portal first-time setup (no app needed)
Built-in web UI with live stats, config, and OTA firmware updates
mDNS announcement for OverManager auto-discovery
Persistent lifetime share and block counters
NTP-synced event log

Works with: OverManager

GitHub Download .bin Setup guide & specs

By purchasing or building, you agree to our Terms & Disclaimers.

OverMiner Lite

Coming Soon

7" touchscreen Kaspa miner and companion display

Hardware

Board: ESP32-S3-WROOM-1
Display: 7" 800×480 capacitive touchscreen
Connectivity: WiFi 802.11 b/g/n + BT 5.0
Memory: 4 MB flash + 8 MB PSRAM
Power: DC 5V-2A
Hashrate: ~1.15 KH/s (kHeavyHash, lottery-tier)

Features

Active kHeavyHash mining
Real-time network hashrate, difficulty, block height, and KAS price
Built-in WiFi setup wizard
Lottery mining configuration via Web UI
Persistent display dashboard

Works with: OverManager

Connect any OverMiner to our pool

All lottery-tier devices use the same stratum endpoint.

Pool URL

stratum+tcp://pool.overbuildlabs.com:5558

Wallet Address

your_kaspa_wallet_address

Worker Name (optional)

OverMinerNano1, OverMinerLite1, etc.

Password (default)

kaspa123 — changeable via the device's web UI

More models coming

Future OverMiner devices will be featured here as they are ready for production. OverMiner K1 under research and development.