+
+
+ 
+
+
+
+
+
+ {{ site.description }}
+ +
+
+ {{ site.description }}
+ +
| 
| 
|
+
+> ##### TIP
+>
+> - Robodyn includes Zero-Cross Detection circuit
+> - Supports **Phase Control** and **Burst mode**
+> - Reuse your Shelly EM or 3EM and send through MQTT grid power and voltage
+> - You can also use a SSR and ZCD module instead of the Robodyn
+> {: .block-tip }
+
+> ##### WARNING
+>
+> - Advised load not more than 2000W
+> - Robodyn has poor quality heat sink, soldering and Zero-Cross pulse
+> - Bypass mode will use the Robodyn dimmer at 100% power
+> - Not as precise as a JSY (MQTT delays)
+> - No local measurement in place to measure the routed power (statistics will be empty)
+> {: .block-warning }
+
+### The Minimalist
+
+The _Minimalist_ build uses inexpensive and easy to use components to start a router.
+
+| ESP32-DevKitC | Robodyn AC Dimmer 40A/800V | JSY-MK-194T with 2 remote clamps |
+| :----------------------------------------------------------------------: | :--------------------------------------------------------------------: | :----------------------------------------------------------------------: |
+| | | 
|
+
+> ##### TIP
+>
+> - Robodyn includes Zero-Cross Detection circuit
+> - Supports **Phase Control** and **Burst mode**
+> {: .block-tip }
+
+> ##### WARNING
+>
+> - Advised load not more than 2000W
+> - Robodyn has poor quality heat sink, soldering and Zero-Cross pulse
+> - Bypass mode will use the Robodyn dimmer at 100% power
+> {: .block-warning }
+
+### The Adventurer
+
+The _Adventurer_ build is for people who are able to mitigate the flaws of the Robodyn 24A to improve it.
+The TRIAC can be changed to a BTA40-800B RD91 fixed directly on the heat sink, and the heat sink can be upgraded.
+See the [Robodyn](#robodyn) section for more information.
+
+| ESP32-DevKitC | Robodyn AC Dimmer 24A/600V | Heat Sink | Triac BTA40-800B RD91 | JSY-MK-194T with 2 remote clamps |
+| :----------------------------------------------------------------------: | :--------------------------------------------------------------------: | :------------------------------------------------------------------: | :-------------------------------------------------------------------: | ------------------------------------------------------------------------ |
+| | 
| 
| 
| |
+
+> ##### TIP
+>
+> - Robodyn includes Zero-Cross Detection circuit
+> - Supports **Phase Control** and **Burst mode**
+> {: .block-tip }
+
+> ##### WARNING
+>
+> - Advised load not more than 2000W
+> - Robodyn has poor quality heat sink, soldering and Zero-Cross pulse
+> - Bypass mode will use the Robodyn dimmer at 100% power
+> - Requires to unsolder the heat sink and triac and put a new triac on a new heat sink
+> {: .block-warning }
+
+### The Elite
+
+The _Elite_ build is for people who want to use a Random SSR instead of a Robodyn to safely dim more power and have a better Zero-Cross Detection circuit more more precising routing.
+
+| ESP32-DevKitC | Random Solid State Relay | Heat Sink | Zero-Cross Detection Module | JSY-MK-194T with 2 remote clamps |
+| :----------------------------------------------------------------------: | :-------------------------------------------------------------------: | :------------------------------------------------------------------: | :------------------------------------------------------------: | ------------------------------------------------------------------------ |
+| | 
| | 
| |
+
+> ##### TIP
+>
+> - Dedicated ZCD circuit with a good pulse
+> - Dedicated Random SSR (models up to 100A)
+> - Supports **Phase Control** and **Burst mode**
+> - Other types of Heat Sink are available: the image above is just an example. Pick one according to your load.
+> - All the components can be easily attached onto a DIN rail
+> {: .block-tip }
+
+> ##### WARNING
+>
+> - Bypass mode will use the SSR dimmer set at 100% power
+> {: .block-warning }
+
+### The Professional (🚧)
+
+The _Professional_ build uses a Voltage Regulator to control the power routing.
+This is probably the best reliable and efficient solution, but it is more complex to setup and wire.
+It requires an additional 12V power supply.
+
+| ESP32-DevKitC | Voltage Regulator | Heat Sink | PWM to Analog Converter | JSY-MK-194T with 2 remote clamps |
+| :----------------------------------------------------------------------: | :--------------------------------------------------------------------: | :----------------------------------------------------------------------: | :--------------------------------------------------------------------: | ------------------------------------------------------------------------ |
+| | 
| 
| 
| |
+
+> ##### TIP
+>
+> - Dedicated hardware supporting high loads
+> - Supports **Phase Control** and **Burst mode**
+> - Heat sink are bigger and better quality: bigger models are also available
+> - All the components can be easily attached onto a DIN rail
+> {: .block-tip }
+
+> ##### WARNING
+>
+> - Requires an additional 12V power supply (i.e. Mean Well HDR-15-15 12V DC)
+> - Bypass mode will use the dimmer set at 100% power
+> {: .block-warning }
+
+### Possible Upgrades
+
+Here are below what you can add to upgrade your router:
+
+| Hardware | Description |
+| :--------------------------------------------------------------------: | :------------------------------------------------------------------------------------------------------------------------ |
+| 
| A bypass relay to avoid using the dimmer when auto bypass is enabled, and an additional relay to control an external load |
+| 
| A temperature sensor to measure the water tank temperature to automatically stop or start the water heating |
+| 
| A push button to restart the router easily |
+| 
| LEDs to display the system status |
+| 
| A display to show the router information |
+| 
| A PZEM to precisely measure the routed power for each output. Only useful if you have more than one output. |
+
+### Remote JSY
+
+Here are the components below to build a remote JSY and install the [Sender](https://github.com/mathieucarbou/MycilaJSY/tree/main/examples/RemoteUDP) .ino file on a it.
+This is a standalone application that looks looks like this and will show all your JSY data, help you manage it, and also send the data through UDP **at a rate of 20 messages per second**.
+
+
+
+You can look in the [JSY project](https://oss.carbou.me/MycilaJSY/) to find more information about how to setup remote JSY and the supported protocols.
+
+| Mean Well HDR-15-5 5V DC | ESP32-DevKitC | JSY-MK-194T with 2 remote clamps |
+| :--------------------------------------------------------------------: | :----------------------------------------------------------------------: | ------------------------------------------------------------------------ |
+| 
| | |
+
+### Alternative: The Shelly Solar Diverter
+
+It is also possible to build a (limited) Solar Diverter / Router with Shelly devices and a voltage regulator.
+
+| [](./assets/img/hardware/shelly_solar_diverter_poc2.jpeg) | [](./assets/img/screenshots/shelly_solar_diverter.jpeg) |
+
+See this blog post for more information: [Shelly Solar Diverter](./blog/2024-07-01_shelly_solar_diverter)
+
+## Selecting your Hardware
+
+### ESP32 Boards
+
+Here are the boards we know are compatible and those we have tested.
+
+| **Board** | **UARTs** | **Ethernet** |
+| :--------------------------------------------------------------------------------------------------------------------------------------------------------- | :-------: | :----------: |
+| [ESP32-DevKitC](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/hw-reference/esp32/get-started-devkitc.html) (recommended - 3 UARTs) | 3 | |
+| [ESP32-S3-DevKitC-1](https://docs.espressif.com/projects/esp-idf/en/latest/esp32s3/hw-reference/esp32s3/user-guide-devkitc-1.html) (recommended - 3 UARTs) | 3 | |
+| [T-ETH-Lite ESP32 S3](https://www.lilygo.cc/products/t-eth-lite?variant=43120880779445) (recommended - 3 UARTs) | 3 | âś… |
+| [ESP-32S](https://www.es.co.th/Schemetic/PDF/ESP32.PDF) | 2 | |
+| [WT32-ETH01](https://en.wireless-tag.com/product-item-2.html) | 2 | âś… |
+
+- _Compile_ means a firmware for this board can at least be built and flashed.
+- _Tested_ means someone has verified that firmware is working or partially working on this board.
+
+### Dimmers: Robodyn, Solid State Relay or Voltage Regulator ?
+
+Here are some pros and cons of each phase control system:
+
+**Robodyn (TRIAC):**
+
+- Pros:
+ - cheap and easy to wire
+ - 40A model comes with a heat sink and fan
+ - All in one device: phase control, ZCD, heat sink, fan
+- Cons:
+ - limited in load to 1/3 - 1/2 of the announced load
+ - 16A / 24A models comes with heat sink which is too small for its supported maximum load
+ - no solution ready to attach them on a DIN rail.
+ - The heat sink often has to be upgraded, except for the one on the 40 model which is already good for small loads below 2000W.
+ - The ZCD circuit [is less accurate](https://github.com/fabianoriccardi/dimmable-light/wiki/About-dimmer-boards) and pulses can be harder to detect [on some boards](https://github.com/fabianoriccardi/dimmable-light/wiki/Notes-about-specific-architectures#interrupt-issue)
+ - You need to go over some modifications to ([improve wiring / soldering and heat sink](https://sites.google.com/view/le-professolaire/routeur-professolaire))
+ - You might need to replace the Triac or move it
+
+**Solid State Relays:**
+
+- Pros:
+ - cheap and easy to wire
+ - support higher loads
+ - can be attached to a DIN rail with standard SSR clips
+ - lot of heat sink models available
+- Cons:
+ - limited in load to 1/3 - 1/2 of the announced load
+ - require an external ZCD module, heat sink and/or fan
+
+**Voltage Regulators:**
+
+Voltage regulators include a ZCD module and a phase control system which can be controlled in many ways.
+These are the best option, but complex to setup, wire and calibrate and require an additional 12V power supply.
+
+This is the option used in the [Shelly Solar Router](./blog/2024-07-01_shelly_solar_diverter).
+
+**Heat Sink:**
+
+In any case, do not forget to correctly dissipate the heat of your Triac / SSR using an appropriate heat sink.
+Robodyn heat sink is not enough and require some tweaking (like adding a flan or de-soldering the triac and heat sink and put the triac on a bigger heat sink).
+
+It is best to take a vertical heat sink for heat dissipation.
+In case of the Robodyn 40A, you can install it vertically.
+
+### Relays: Solid State Relay or Electromagnetic Relay ?
+
+**For bypass relays used for outputs**
+
+- For bypass relays, you can use electromagnetic relays because they will be used less frequently.
+ Also, some electromagnetic relays boards have both a NO and NC output to better isolate the dimming circuit and bypass circuit.
+
+**For external Relays**
+
+- If you want to use the relays to automatically switch one of the resistance of the water tank, as described in the [recommendations to reduce harmonics and flickering](./overview#recommendations-to-reduce-harmonics-and-flickering), you must use a SSR because the relay will be switched on and off frequently.
+- If you are not using the automatic relay switching, and you either control them manually or through a Home Automation system, you can use electromagnetic relays, providing the relays won't be switched on and off frequently.
+- Use a Zero-Cross SSR for resistive loads
+- Use a Random SSR for inductive loads (pump, motors)
+
+**Also to consider:**
+
+- You should not use electromagnetic relays to switch a load on and off frequently because they have a limited number of cycles before they fail and they can be stuck.
+- Relays have to be controllable through a 3.3V DC signal.
+- It is easier to find SSR supporting high loads that can be controlled by a 3.3V DC signal than electromagnetic relays.
+- Also, SSR with a DIN Rail clip are easy to install.
+- On the other hand, SSR can be more affected by harmonics than electromagnetic relays and they are more expensive.
+
+### How to choose a Solid State Relay ?
+
+- Make sure you add a **heat sink** to the SSR or pick one with a heat sink, especially if you use a Random SSR instead of a Robodyn
+- **Type of control**: DA: (DC Control AC)
+- **Control voltage**: 3.3V should be in the range (example: 3-32V DC)
+- Verify that the **output AC voltage** is in the range (example: 24-480V AC)
+- Verify the **SSR amperage**: usually, it should be 2-3 times the nominal current of your resistive load (example: 40A SSR for a 3000W resistance).
+ For induction loads, it should be 4-7 times the nominal current.
+- **Zero Cross SSR** (which is the default for most SSR): for the bypass relay or external relays with resistive loads, or when using Burst modulation routing algorithm
+- **Random SSR**: if you chose to not use the Robodyn but a Random SSR for Phase Control, or external relays with inductive loads (pump, motors)
+
+## Where to buy ?
+
+Here is the non exhaustive list where to find some hardware to build your router.
+Links are provided for reference only, you can find them on other websites.
+
+- [ESP32 Boards](#esp32-boards-1)
+- [Robodyn](#robodyn)
+- [Random and Zero-Cross SSR](#random-and-zero-cross-ssr)
+- [Voltage Regulators](#voltage-regulators)
+- [Electromagnetic Relay](#electromagnetic-relay)
+- [Measurement Devices](#measurement-devices)
+- [Temperature Sensors, LEDs, Buttons, Displays](#temperature-sensors-leds-buttons-displays)
+- [Mounting Accessories](#mounting-accessories)
+
+### ESP32 Boards
+
+| | |
+| :--------------------------------------------------------------------------- | :-------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| | ESP32-DevKitC ([ESPRESSIF Official Store](https://fr.aliexpress.com/item/1005004441541467.html)) - Any version will work: 32 NodeMCU, 32s, 32e, 32ue, etc |
+| 
| ESP32-S3-DevKitC-1/1U ([ESPRESSIF Official Store](https://fr.aliexpress.com/item/1005003979778978.html)) |
+| 
| [LILYGO T-ETH-Lite ESP32-S3](https://www.lilygo.cc/products/t-eth-lite) (Ethernet) |
+| 
| [WT32-ETH01](https://fr.aliexpress.com/item/1005004436473683.html) v1.4 (Ethernet) |
+| 
| [WiFi Pigtail Antenna](https://fr.aliexpress.com/item/32957527411.html) for ESP32 boards supporting external WiFi antenna |
+
+### Robodyn
+
+| | |
+| :--------------------------------------------------------------------- | :-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| | [Robodyn AC Dimmer 24A/600V](https://www.aliexpress.com/item/1005001965951718.html) Includes ZCD, supports **Phase Control** and **Burst mode** |
+| | [Robodyn AC Dimmer 40A/800V](https://fr.aliexpress.com/item/1005006211999051.html) Includes ZCD, supports **Phase Control** and **Burst mode** |
+| | Triac BTA40-800B RD91 [here](https://fr.aliexpress.com/item/32892486601.html) or [here](https://fr.aliexpress.com/item/1005001762265497.html) if you want / need to replace the Triac inside your Robodyn |
+| | [Heat Sink for Random SSR and Triac](https://fr.aliexpress.com/item/1005004879389236.html) (there are many more types available: take a big heat sink placed vertically) |
+
+> ##### IMPORTANT
+>
+> 1. It is possible to switch the TRIAC of an original Robodyn AC Dimmer with a higher one, for example a [BTA40-800B BOITIER RD-91](https://fr.farnell.com/stmicroelectronics/bta40-800b/triac-40a-800v-boitier-rd-91/dp/9801731) | [LCTC Random Solid State Relay (SSR) that can be controlled by a 3.3V DC signal](https://www.aliexpress.com/item/1005004084038828.html), ([Other LCTC vendor link](https://fr.aliexpress.com/item/1005004863817921.html)). Supports **Phase Control** and **Burst mode**, See [How to choose your SSR ?](#how-to-choose-your-ssr-) below |
+| 
| [Zero-Cross Solid State Relay (SSR) that can be controlled by a 3.3V DC signal](https://fr.aliexpress.com/item/1005003216482476.html) Supports **Burst mode**, See [How to choose your SSR ?](#how-to-choose-your-ssr-) below |
+| 
| [Heat Sink for SSR](https://fr.aliexpress.com/item/32739226601.html) (there are many more types available: take a big heat sink placed vertically) |
+
+| **Zero-Cross Detection** | ZCD module is required with SSR. |
+| :------------------------------------------------------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
+| | [Very good ZCD module for DIN Rail from Daniel S.](https://www.pcbway.com/project/shareproject/Zero_Cross_Detector_a707a878.html) (used in conjunction with a Random SSR) |
+
+**Other SSR:**
+
+- [Zero-Cross SSR DA](https://fr.aliexpress.com/item/1005002297502716.html)
+- [Zero-Cross SSR DA + Heat Sink + Din Rail Clip](https://www.aliexpress.com/item/1005002503185415.html) (40A, 60A, very high - can prevent closing an electric box)
+- [Zero-Cross SSR 120 DA](https://www.aliexpress.com/item/1005005020709764.html) (for very high load)
+
+### Voltage Regulators
+
+| | |
+| :----------------------------------------------------------------------------------------- | :----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| | [Loncont LSA-H3P50YB](https://fr.aliexpress.com/item/32606780994.html) (also available in 70A and more). Includes ZCD, supports **Phase Control** and **Burst mode** |
+| 
| [LCTC Voltage Regulator 220V / 40A](https://fr.aliexpress.com/item/1005005008018888.html) or [more models without heat sink but 60A, 80A, etc](https://fr.aliexpress.com/item/20000003997748.html) (also available in 70A and more). Includes ZCD, supports **Phase Control** and **Burst mode** |
+| | [3.3V PWM Signal to 0-10V Convertor ](https://fr.aliexpress.com/item/1005004859012736.html) or [this link](https://fr.aliexpress.com/item/1005006859312414.html) or [this link](https://fr.aliexpress.com/item/1005007211285500.html) or [this link](https://fr.aliexpress.com/item/1005006822631244.html). Required to use the voltage regulators to convert the ESP32 pulse signal on 3.3V to an analogic output from 0-10V (external 12V power supply required) |
+| | [Heat Sink 10-60A for Voltage Regulators](https://fr.aliexpress.com/item/1005001541419957.html) |
+
+### Electromagnetic Relay
+
+| | |
+| :--------------------------------------------------------------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| 
| 1-Channel 5V DC / 30A Electromagnetic Relay on DIN Rail Support: [here](https://fr.aliexpress.com/item/1005004908430389.html), [here](https://fr.aliexpress.com/item/32999654399.html), [here](https://fr.aliexpress.com/item/1005005870389973.html), [here](https://fr.aliexpress.com/item/1005005883440249.html) |
+| | 2-Channel 5V DC / 30A Dual Electromagnetic Relays on DIN Rail Support: [here](https://fr.aliexpress.com/item/1005004899369193.html), [here](https://fr.aliexpress.com/item/32999654399.html), [here](https://fr.aliexpress.com/item/1005005870389973.html), [here](https://fr.aliexpress.com/item/1005005883440249.html), [here](https://fr.aliexpress.com/item/1005001543232221.html) |
+
+### Measurement Devices
+
+| | |
+| :----------------------------------------------------------------------- | :-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| 
| [JSY-MK-194T with 1 fixed tore and 1 remote clamp](https://www.aliexpress.com/item/1005005396796284.html) Used to measure the grid power and total routed power |
+| | [JSY-MK-194T with 2 remote clamps](https://fr.aliexpress.com/item/1005005529999366.html) Used to measure the grid power and total routed power |
+| | Peacefair PZEM-004T V3 100A Openable (with clamp) [official](https://fr.aliexpress.com/item/33043137964.html), [with connector](https://fr.aliexpress.com/item/1005005984795952.html), [USB-TTL Cable](https://fr.aliexpress.com/item/1005006255175075.html). Can be used to measure each output individually and more precisely. Several PZEM-004T can be connected to the same Serial port. |
+| | [Shelly EM](https://www.shelly.com/en-fr/products/product-overview/shelly-em-120a/shelly-em-2x-50a) (or any other alternative sending data to MQTT) |
+
+### Temperature Sensors, LEDs, Buttons, Displays
+
+| **Temperature Sensors, LEDs, Buttons** | |
+| :-------------------------------------------------------------------- | :---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| | [DS18B20 Temperature Sensor + Adapter](https://fr.aliexpress.com/item/4000143479592.html) (easier to use to install in the water tank - take a long cable) |
+| | Push Buttons [Amazon](https://www.amazon.fr/dp/B0C2Y46BK6) (16mm) [AliExpress](https://fr.aliexpress.com/item/4001081212556.html) (12mm) for restart, manual bypass, reset |
+| | Traffic lights Lights module for system status [AZ-Delivery](https://www.az-delivery.de/en/products/led-ampel-modul), [AliExpress](https://fr.aliexpress.com/item/32957515484.html) |
+
+| **Screens** | |
+| :----------------------------------------------------------------- | :---------------------------------------------------------------------------------------------- |
+| 
| [SSD1306 OLED Display 4 pins 128x64 I2C](https://www.aliexpress.com/item/32638662748.html) |
+| | [SH1106 OLED Display 4 pins 128x64 I2C](https://www.aliexpress.com/item/1005001621782442.html) |
+| 
| [SSD1307 OLED Display 4 pins 128x64 I2C](https://www.aliexpress.com/item/1005003297480376.html) |
+
+### Mounting Accessories
+
+| | |
+| :------------------------------------------------------------------------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| 
| [Electric Box](https://www.amazon.fr/gp/product/B0BWFGVV4S) |
+| 
| [Extension boards](https://www.amazon.fr/dp/B0BCWBW4SR) (pay attention to the distance between header, there are different models. This one fits the ESP32 NodeMCU above) |
+| 
| [DIN Rail Mount for PCB 72mm x 20mm](https://fr.aliexpress.com/item/32276247838.html) for the ZCD module above to mount on DIN Rail. [Alternative link](https://fr.aliexpress.com/item/4000272944733.html) |
+| 
| [DIN Rail Mount for ESP32 NodeMCU Dev Kit C](https://fr.aliexpress.com/item/1005005096107275.html) |
+| 
| [Distribution Module](https://fr.aliexpress.com/item/1005005996836930.html) / [More choice](https://fr.aliexpress.com/item/1005006039723013.html) |
+| 
| [DIN Rail Clips for SSR](https://fr.aliexpress.com/item/1005004396715182.html) |
+| | AC-DC 5V 2.4A DIN Adapter HDR-15-5 [Amazon](https://www.amazon.fr/Alimentation-rail-Mean-Well-HDR-15-5/dp/B06XWQSJGW), [AliExpress](https://fr.aliexpress.com/item/4000513120668.html). Can be used to power the ESP when installed in an electric box on DIN rail. Also if you need, a 12V version s available: [HDR-15-15 12V DC version](https://www.amazon.fr/Alimentation-rail-Mean-Well-HDR-15-5/dp/B07942GFTH?th=1) |
+| 
| [3D Print enclosure for JSY-MK-194T](https://www.thingiverse.com/thing:6003867). You can screw it on an SSR DIN Rail to place your JSY on a DIN Rail in this enclosure. |
+| 
| [Dupont Cable Kit](https://fr.aliexpress.com/item/1699285992.html) |
+| 
| [100 ohms 0.1uF RC Snubber](https://www.quintium.fr/shelly/168-shelly-rc-snubber.html) (for Robodyn AC dimmer and Random SSR: can be placed at dimmer output) |
+
+## Default GPIO pinout per board
+
+The hardware and GPIO pinout are heavily inspired by [Routeur solaire PV monophasé Le Profes'Solaire](https://sites.google.com/view/le-professolaire/routeur-professolaire) from Anthony.
+Please read all the information there first.
+He did a very great job with some videos explaining the wiring.
+
+Most of the features can be enabled or disabled through the app and the GPIO pinout can be changed also trough the app.
+
+Here are below the default GPIO pinout for each board.
+
+**Tested boards:**
+
+| **FEATURE** | **ESP32** | **NodeMCU-32S** | **esp32s3** | **wt32_eth01** | **T-ETH-Lite** |
+| :-------------------------------- | :-------: | :-------------: | :---------: | :------------: | :------------: |
+| Display CLOCK (CLK) | 22 | 22 | 9 | 32 | 40 |
+| Display DATA (SDA) | 21 | 21 | 8 | 33 | 41 |
+| JSY-MK-194T RX (Serial TX) | 17 | 17 | 17 | 17 | 17 |
+| JSY-MK-194T TX (Serial RX) | 16 | 16 | 16 | 5 | 18 |
+| Light Feedback (Green) | 0 | 0 | 0 | -1 | 38 |
+| Light Feedback (Red) | 15 | 15 | 15 | -1 | 46 |
+| Light Feedback (Yellow) | 2 | 2 | 2 | -1 | 21 |
+| OUTPUT #1 Bypass Relay | 32 | 32 | 40 | 12 | 20 |
+| OUTPUT #1 Dimmer (Robodyn or SSR) | 25 | 25 | 37 | 2 | 19 |
+| OUTPUT #1 Temperature Sensor | 18 | 18 | 18 | 15 | 3 |
+| OUTPUT #2 Bypass Relay | 33 | 33 | 33 | -1 | 15 |
+| OUTPUT #2 Dimmer (Robodyn or SSR) | 26 | 26 | 36 | -1 | 7 |
+| OUTPUT #2 Temperature Sensor | 5 | 5 | 5 | -1 | 16 |
+| Push Button (restart) | EN | EN | EN | EN | EN |
+| RELAY #1 | 13 | 13 | 13 | 14 | 5 |
+| RELAY #2 | 12 | 12 | 12 | -1 | 6 |
+| System Temperature Sensor | 4 | 4 | 4 | 4 | 4 |
+| ZCD (Robodyn or ZCD Sync) | 35 | 35 | 35 | 35 | 8 |
+| PZEM-004T v3 RX (Serial TX) | 27 | 27 | 11 | -1 | -1 |
+| PZEM-004T v3 TX (Serial RX) | 14 | 14 | 14 | -1 | -1 |
+
+- `-1` means not mapped (probably because the board does not have enough pins)
+
+**Potential compatible boards, but not tested yet:**
+
+| **FEATURE** | **esp32-poe** | **ESP32-C3-DevKitC-02** | **lolin32_lite** | **lolin_s2_mini** | **m5stack-atom** | **m5stack-atoms3** |
+| :-------------------------------- | :-----------: | :---------------------: | :--------------: | :---------------: | :--------------: | :----------------: |
+| Display CLOCK (CLK) | 16 | 6 | 22 | 9 | -1 | -1 |
+| Display DATA (SDA) | 13 | 7 | 19 | 8 | -1 | -1 |
+| JSY-MK-194T RX (Serial TX) | 33 | 20 | 17 | 39 | -1 | -1 |
+| JSY-MK-194T TX (Serial RX) | 35 | 21 | 16 | 37 | -1 | -1 |
+| Light Feedback (Green) | -1 | -1 | 0 | 3 | -1 | -1 |
+| Light Feedback (Red) | -1 | -1 | 15 | 6 | -1 | -1 |
+| Light Feedback (Yellow) | -1 | -1 | 2 | 2 | -1 | -1 |
+| OUTPUT #1 Bypass Relay | 4 | 2 | 32 | 21 | -1 | -1 |
+| OUTPUT #1 Dimmer (Robodyn or SSR) | 2 | 1 | 25 | 10 | -1 | -1 |
+| OUTPUT #1 Temperature Sensor | 5 | 0 | 18 | 18 | -1 | -1 |
+| OUTPUT #2 Bypass Relay | -1 | 9 | 33 | 33 | -1 | -1 |
+| OUTPUT #2 Dimmer (Robodyn or SSR) | -1 | 8 | 26 | 11 | -1 | -1 |
+| OUTPUT #2 Temperature Sensor | -1 | 5 | 5 | 5 | -1 | -1 |
+| Push Button (restart) | EN | EN | EN | EN | EN | EN |
+| RELAY #1 | 14 | -1 | 13 | 13 | -1 | -1 |
+| RELAY #2 | 15 | -1 | 12 | 12 | -1 | -1 |
+| System Temperature Sensor | 0 | 4 | 4 | 4 | -1 | -1 |
+| ZCD (Robodyn or ZCD Sync) | 36 | 3 | 35 | 35 | -1 | -1 |
+| PZEM-004T v3 RX (Serial TX) | -1 | -1 | -1 | -1 | -1 | -1 |
+| PZEM-004T v3 TX (Serial RX) | -1 | -1 | -1 | -1 | -1 | -1 |
+
+- `-1` means not mapped (probably because the board does not have enough pins)
+- This mapping table might contain errors
+
+**Minimal requirements:**
+
+- a pin configured to the ZCD system: either the ZC pin of the Robodyn or any pin from any other ZC detection module
+- a pin configured to the Phase Control system: PSM pin for the Robodyn or DC + side of the Random SSR
+
+The website display the pinout configured, the pinout layout that is live at runtime and also displays some potential issues like duplicate pins or wrong pin configuration.
+
+[](./assets/img/screenshots/gpio.jpeg)
+
+## Pictures of some routers
+
+> _TO BE COMPLETED_
diff --git a/docs/buy.md b/docs/buy.md
new file mode 100644
index 0000000..dde5157
--- /dev/null
+++ b/docs/buy.md
@@ -0,0 +1,57 @@
+---
+layout: default
+title: Buy
+description: Buy
+---
+
+# Buy YaSolR Pro
+
+OSS and Pro firmware are the same, except that the PRO version relies on commercial (paid) libraries and provides some additional features based on a better dashboard.
+
+**The Pro version is only 25 euros** and gives access to all the perks of the Pro version below:
+
+| Feature | OSS (Free) | PRO (Paid) |
+| -------------------------------- | :--------------------------------------------------------------: | :--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------: |
+| Dashboard | Overview **only** | Full Dashboard as seen in the screenshots |
+| Manual Dimmer Control | Home AssistantHost | ";
+ S += ""+SelectPin+SelectOut+" | "; + S += "Ordre On | Répétition(s) | "; + S += "Temporisation(s) | "; + S += "
Port | ";
+ S += ""; + S += " | Ordre Off | ";
+ S += ""; + S += " | "; + S += " |
| '+M[i][1]+' | '+M[i][2]+' | '; + } + S+='
| '+E[i][1]+' | '+E[i][2]+' | '; + } + S+='
| Etat Action(s) | Forçage | |||
|---|---|---|---|---|