# Resources A Definitive List of Resources for OpenEnergyMonitor Hardware, Firmware and Software **emonTx4** - [Documentation](emontx4/index.md) - [Github repository](https://github.com/openenergymonitor/emontx4) - [Hardware files](https://github.com/openenergymonitor/emontx4/tree/main/hardware) - [Firmware](https://github.com/openenergymonitor/emontx4/tree/main/firmware) **emonVs** - [Documentation](emontx4/voltage_sensors.md) - [Github repository](https://github.com/openenergymonitor/emonVoltageSense) - [Hardware files](https://github.com/openenergymonitor/emonVoltageSense/tree/main/v1.1) **emonPi** - [Documentation](emonpi/index.md) - [Hardware & Firmware](https://github.com/openenergymonitor/emonpi) - [Forum Category](https://community.openenergymonitor.org/c/hardware/emonpi) **emonTx v3** - [Documentation](emontx3/index.md) - [Hardware & Firmware](https://github.com/openenergymonitor/emontx3) - [Other emonTx firmware examples](https://github.com/openenergymonitor/emonTxFirmware) - [Forum Category](https://community.openenergymonitor.org/c/hardware/emontx) **RFM69Pi** - [Documentation](/emonbase/rfm69-pi.md) - [Hardware & Firmware](https://github.com/openenergymonitor/rfm2pi) - [Forum Category](https://community.openenergymonitor.org/c/hardware/rfm69pi) **emonESP** - [User Guide](emontx3/esp8266.md) - [Firmware](https://github.com/openenergymonitor/emonesp) - [Forum Category](https://community.openenergymonitor.org/c/hardware/emonesp) **emonTx V2** - [Build Guide](https://github.com/openenergymonitor/emontx2/blob/master/buildguide.md) - [Hardware & Firmware](https://github.com/openenergymonitor/emontx2) - [Forum Category](https://community.openenergymonitor.org/c/hardware/emontx) **emonTx Arduino Shield** - [User Guide](https://github.com/openenergymonitor/emontx-shield) - [Hardware & Firmware](https://github.com/openenergymonitor/emontx-shield) - [Forum Category](https://community.openenergymonitor.org/c/hardware/emontx) **emonTH V1** - [User Guide](https://docs.openenergymonitor.org/emonth2/index.html) - [Hardware & Firmware](https://github.com/openenergymonitor/emonth) - [Forum Category](https://community.openenergymonitor.org/c/hardware/emonth) **emonTH V2** - [User Guide](https://docs.openenergymonitor.org/emonth2/index.html) - [Hardware & Firmware](https://github.com/openenergymonitor/emonth2) - [Forum Category](https://community.openenergymonitor.org/c/hardware/emonth) **emonGLCD** - [Build Guide](https://github.com/openenergymonitor/EmonGLCD/tree/master/buildguide) - [Hardware & Firmware](https://github.com/openenergymonitor/emonglcd) - [Forum Category](https://community.openenergymonitor.org/c/hardware/display) **MQTT WiFi Relay** - [User Guide](https://github.com/openenergymonitor/ESP8266_Relay_Board) - [Hardware & Firmware](https://github.com/openenergymonitor/ESP8266_Relay_Board) - [Forum Category](https://community.openenergymonitor.org/c/hardware/wifi-relay) **Optical Pulse Sensor** - [Optical Pulse Sensor Docs](https://docs.openenergymonitor.org/emonpi/pulse_counting.html) **OpenEVSE** - [User Guide](https://docs.openenergymonitor.org/emonevse/index.html) - [Build Guide](http://openevse.dozuki.com/Guide/OpenEVSE+50A+Charging+Station/8) - [WiFi Gateway User Guide & FW](https://github.com/openevse/ESP8266_WiFi_v2.x/) - [OpenEVSE Controller FW](https://github.com/OpenEVSE/open_evse) - [OpenEVSE Controller Hardware](https://github.com/OpenEVSE/OpenEVSE_PLUS) - [OpenEVSE Safety Features](https://openev.freshdesk.com/support/solutions/articles/6000113537-openevse-safety-features) **Emoncms** - [Emoncms GitHub](https://github.com/emoncms/emoncms) - [Forum category](https://community.openenergymonitor.org/c/emoncms) **emonSD Pre-built SD card** - [emonSD download](emonsd/download.md) - [Forum category](https://community.openenergymonitor.org/c/emonsd) **emonHub** - [emonHub GitHub](https://github.com/openenergymonitor/emonhub) - [emonHub Documentation](emonhub/index.md)