YaSolR ?

YaSolR is an ESP32 firmware for Solar Router compatible with nearly any existing hardware components. It supports most hardware used in routers like:

• F1ATB
• Routeur solaire “Le Profes’Solaire”
• etc

If you already have a Solar Router at home based on ESP32, built by yourself or someone else, there is a good chance that YaSolR will be compatible.

YaSolR is a software that will run on your Solar Router.

YaSolR does not come with hardware. But this website will help you pick and build your router.

Please go to the overview page to know how a solar router works.

Benefits

YaSolR is one of the most optimized and powerful Open-Source Solar Router firmware available:

• 12-bits resolution with linear interpolation for a precise TRIAC control
• 3-Phase support
• Custom dimmer library optimized for ESP32 (🚧)
• Dimmer range remapping like Shelly Dimmers
• Frequency auto-detection (support any frequency: not only 50/60Hz)
• Harmonics can be lowered to comply with regulations thanks to several settings
• Independent or Sequential Outputs
• PID Controller optimized and customizable
• PID Tuning web interface
• Precise Power Calibration
• Precise Zero-Cross Detection with ZC pulse analysis
• RMT Peripheral used for DS18 readings
• SafeBoot partition for recovery and system update
• SSL/TLS MQTT Support
• Up to 20 measurements / second with a remote JSY
• Up to 25 measurements / second with a local JSY

This is a big Open-Source project following best development practices. YaSolR is:

• flexible by allowing you to pick the hardware you want
• easy to use with one of the best easy-to-use and responsive Web Interface, REST API and MQTT API
• compatible with Home Assistant and other home automation systems (Auto Discovery)
• compatible with EV Charging Box like OpenEVSE
• compatible with remote dimmer, relay, temperature, measurement (ESP-Now / UDP)
• compatible with many hardware components:
  • ESP32 Dev Kit
  • ESP32 S3 Dev Kit
  • ESP32s
  • Lilygo T Eth Lite S3 (Ethernet support)
  • WT32-ETH01 (Ethernet support)
  • Random and Zero-Cross SSR
  • Standalone Zero-Cross Detection modules
  • Robodyn 24A / 40A
  • Voltage Regulators (Loncont LSA or LCTC)
  • DS18 Temperature Sensors
  • etc

Detailed Features

• Routing Outputs
  • Dimmer (required)
  • Bypass Relay (optional)
  • Temperature (optional)
  • Measurement device (optional)
  • Additional Features
• Grid Power Measurement
  • JSY-MK-194T
  • Remote Grid Measurement
  • 3-Phase Support
• 2x Relays
• Monitoring and Management
• MQTT, REST API and Home Automation Systems
• Online / Offline modes
• PID Control and Tuning
• Remote Capabilities
• Virtual Excess and EV Charger Compatibility

Routing Outputs

YaSolR supports up to 2 outputs. A routing output is connected to a resistive load and controls its power by dimming the voltage. Each output is composed of the following components:

• Dimmer (required)
• Bypass Relay (optional)
• Temperature (optional)
• Measurement device (optional)
• Additional Output Features

Dimmer (required)

A dimmer controls the power sent to the load. Example of supported dimmers:

Dimmer Type	Phase Control	Burst Fire Control (🚧)
Robodyn 24A	✅	✅
Robodyn 40A	✅	✅
Random SSR	✅	✅
Zero-Cross SSR (🚧)	❌	✅
Voltage Regulator	✅	✅

Bypass Relay (optional)

A bypass relay allows to force a heating at full power and bypass the dimmer at a given schedule or manually. Keeping a dimmer on generates heat so a bypass relay can be installed to avoid using the dimmer.

If a bypass relay is installed, the dimmer will be used instead and will be set to 0-100% to simulate the relay.

Electromagnetic Relay	Zero-Cross SSR	Random SSR

Temperature (optional)

Measuring the temperature of the water tanker is important to ve able to trigger automatic heating based on temperature thresholds, or stop the routing if the temperature i reached.

This can also be done:

• using a remote temperature sensor through MQTT
• using a remote temperature sensor through ESP-Now (🚧)
• using one of the supported sensor:

DS18B20

Measurement device (optional)

Each output supports an optional measurement device to measure the power routed to the load.

• JSY-MK-194T: has 2 clamps, and is used to monitor the aggregated routed output power (sum of the two outputs) and the grid power with the second clamp.
• PZEM-004T V3: can monitor each output independently. It cannot be used to measure the grid power.

PZEM-004T V3	JSY-MK-194T

Additional Output Features

• Bypass Automatic Control / Manual Control: Automatically force a heating as needed based on days, hours, temperature range, or control it manually
• Dimmer Automatic Control / Manual Control: Automatically send the grid excess to the resistive load through the dimmer (or manually control the dimmer yourself if disabled)
• Independent or Sequential Outputs with Grid Excess Sharing: Outputs are sequential by default (second output activated after first one at 100%). Independent outputs are also supported thanks to the sharing feature to split the excess between outputs. This feature is available in Dimmer Automatic Control mode.
• Dimmer Duty Limiter: Set a limit to the dimmer power to avoid routing too much power
• Dimmer Temperature Limiter: Set a limit to the dimmer to stop it when a temperature is reached. This temperature can be different than the temperature used in auto bypass mode.
• Statistics: Harmonic information, power factor, energy, routed power, etc
• Automatic Resistance Detection: if a JSY or PZEM is installed, automatically discover and save the resistance value of the connected load.
• Dimmer Range Remapping: Remap the dimmer duty to a different range (e.g. 10-80%). Some dimmers (especially voltage regulator controlled through a PWM-analog conversion), are working between 1-8V so remapping the duty is necessary.
• Zero-Cross Pulse Analysis: YaSolR will analyze ZC pulses from the Zero-Cross Detection and display the average pulse length and period

Grid Power Measurement

Measuring the grid power is essential to know how much power is available to route. YaSolR supports many ways to measure the grid power and voltage:

Mono-phase:

• MQTT (Home Assistant, Jeedom, Shelly EM, etc)
• JSY-MK-194T (25 measurements / second)
• Remote JSY-MK-194T through UDP (20 measurements / second)
• Remote JSY-MK-194T through ESP-Now (🚧)

3-Phase:

• MQTT (Home Assistant, Jeedom, Shelly 3EM, etc)
• JSY-MK-333 (🚧)
• Remote JSY-MK-333 through UDP (🚧)
• Remote JSY-MK-333 through ESP-Now (🚧)

Relays

YaSolR supports up to 2 relays to control external resistive loads or contactors.

• Supports NO / NC relay type
• Automatic Control / Manual Control: You can specify the resistive load power in watts connected to the relay. If you do so, the relay will be automatically activated based on the excess power.

Monitoring and Management

Dashboard:

• Charts: Live charts (grid power, routed power, THDi, PID tuning, etc)
• Health: configuration mistakes are detected as much as possible and issues displayed when a component was found to not properly work.
• Languages (i18n): en / fr
• LEDs: Support LEDs for visual alerts
• Manual Override: Override anything remotely (MQTT, REST, Website)
• GPIO: A GPIO section shows the view of configured pins and activated pins, to report issues, duplications or invalid pins.
• Restart, Factory Reset, Config Backup & Restore, Debug Logging
• Statistics: Harmonic information, power factor, energy, routed power, grid power, grid frequency and voltage, etc
• Web console: View ESP logs live from a Web interface
• Web OTA Firmware Update: Update firmware through the Web interface

Hardware:

• Display: Support I2C OLED Display (SSD1307, SH1106, SH1107)
• Push Button: Support a push button to restart the device
• Temperature Sensor: Support a temperature rensor for the router box (DS18B20)

MQTT, REST API and Home Automation Systems

The router exposes a lot of statistics and information through MQTT and REST API and provides a very good integration with Home Assistant or other home automation systems. The router can be completely controlled remotely through a Home Automation System.

• REST API: extensive REST API support
• MQTT: extensive MQTT API (with TLS support)
• Home Assistant Integration: Activate Home Assistant Auto Discovery to automatically create a YaSolR device in Home Assistant with all the sensors

Online / Offline modes

• Access Point Mode: router can work in AP mode without WiFi and Internet
• Admin Password: to protect the website, API and Access Point
• Captive Portal a captive portal is started first time to help you connect the router
• Ethernet & Wifi: ESP32 boards with Ethernet and WiFi are supported
• NTP support to synchronize time and date with Internet. If not activated, it is still possible to manually sync with your browser.
• Offline Mode: The router can work without WiFi, even the features requiring time and date.

PID Control and Tuning

The router uses a PID controller to control the dimmers and you have full control over the PID parameters to tune it.

Demo on Youtube:

Virtual Excess and EV Charger Compatibility

Thanks to power measurement, the router also provides these features:

• Virtual Excess: Expose the virtual excess (MQTT, REST API, web) which is composed of the current excess plus the routing power
• EV Charger Compatibility (i.e OpenEVSE): Don’t prevent an EV charge to start (router can have lower priority than an EV box to consume available production excess)

A measurement device is required to use these features.