Using the breakout, you will be using pins 2, 3, and 5. Powered by its RJ12 communication port, the BT-1 provides wireless monitoring of system data through the Renogy DC Home smart phone App. I'm using ESP32 and ModbusMaster library. RS232 port allows the Rover PG to communicate with the BT-1 Bluetooth module, which can pair with the Renogy BT smartphone app 9. Description. Yes, this uses quite a bit of juice when you do a start up, so I was thinking of using a Raspberry Pi.Since I am not a Java tinkerer, I would like to use Python instead. Thanks!EDIT:If you could show the pinout of your RJ12 cable to the DB9 breakout, that would be great. I have a USB to serial and a serial dim board....if the USB will not drop down to the 3.3 volts needed for the Pi do I need to use a converter? Also if there are any modbus/renogy quirks I should be aware of that would also be helpful. Any data you want, you have to request. I’ll update when I have made some progress. So if you'd like to use python, it looks like there's a library made for this: github.com/corbinbs/solarshed . Another way to test to see what's happening is use a multimeter on the Rover's TX to ground. You should be able to read these: PV Voltage: 0x0107, PV Current: 0x0108, Charging Power: 0x0109. It's not that you can't get the voltage of the RS232 signal to drop down to 3.3V for the pi to read, it's that an RS232 signal uses positive and negative voltages to represent 0s and 1s. Because of that, I think that was the reason that I was unsuccessful in getting communication through my Raspberry Pi to work. You've already done the work, I don't want to mess up such a simple step. And if not, why? This check just makes sure your converter is working as expected. I had no 6pin plugs so I ground down each side of an 8pin Cat5 plug until it fit in. But it doesn't like dealing with the PWM, the reading changes from moment to moment so will require some work. The Renogy Monitoring Screen for Smart Lithium Battery Series is a high precision meter designed for Smart Lithium Iron Phosphate Batteries in off-grid energy storage systems. The RS232 connects and communicates the controller with the Renogy BT-1 Bluetooth module. Powered by its RJ12 communication port, the BT-1 provides wireless monitoring of system data through the Renogy BT/Renogy DC Home smart phone App. lindsay,I found a nodejs package that had a bunch of these listed and the name of the doc.Right now I'm running a package called EpsolarServer that I changed a bit. If you use a multimeter, you can pretty easily figure out each pin out. Thank you for the informative post. Well, I didn’t find any well documented article on google for connecting Arduino and raspberry pi over bluetooth HC-05. How to confirm your PC com port, usb-rs232 adapter and serial cable are working with a loop back test There's a bunch of undocumented quirks of the Rover's modbus. Have you found it to be accurate? Designed with a simple interface for ease of use, the controller uses multiple LED indicators to notify users of charge status and battery information. So you can always be sure that the 2 middle pins are both ground, but make sure to check the outside ones. It's written in C++. I don't know if the broadcast message using address 0 will do anything. So the Rover doesn't "push" out data. You can still see my solarthing project here: https://github.com/wildmountainfarms/solarthing, Right now, most of the info on how to set it up is on the quickstart here: https://github.com/wildmountainfarms/solarthing/blob/master/other/docs/quickstart.md. The Renogy BT-1 Bluetooth module is a great addition to any compatible Renogy solar system. Here: renogy.boards.net/thread/266/rover-modbus. I measured the voltage on what I had actually connected and I realized I had sent 15V through the pi's GPIO. The second link is the set up for running the program. I'm trying to connect the ESP32 directly to the micoprocessor of the Wanderer, since they will be located in the same box. For whatever reason in my program it takes around 4 seconds to get all of the data. I've verified a sent signal with oscilloscope,  but I get no response from the charge controller. Securing it is a nightmare. Basically Modbus is a protocol where you can request and set data. Is this document available somewhere else? Thanks Joshua, I have just put together the same setup that you are using with the RS232 to USB adapter and wire the DB9 connection.....I have everything plugged in but cannot find the files to run.....when I click on the links above it says that they have been removed from https://github.com? I mean, it displays them on the LCD...! renogy.boards.net/thread/266/rover-modbus, www.netram.co.za/4302-gravity-i2c-16x2-arduino-lcd-with-rgb-font-display-black.html, https://renogy.boards.net/attachment/download/97, https://github.com/wildmountainfarms/solarthing/raw/master/other/solar/resources/renogy_rover_modbus.docx, https://github.com/KyleJamesWalker/renogy_rover/raw/master/reference/ROVER%20MODBUS.docx, 200 Watt Eclipse Suitcase Plus 100 Watt Panel. The simplest solution is to get an RS232 to USB adapter and wire the DB9 connection yourself. Yesterday I received a Renogy Rover PG 40A charge controller and I was given the task of collecting data from it using a Raspberry Pi. So far no luck. Will Renogy be releasing the command set for communication with the Rover, or is there a download, of the command set, available somewhere. I don't have pictures, but you can use a multimeter to make sure the voltages are correct. Are you using the USB to RS232 DB9 cable and a breakout like I am? Am I able to use an RJ11 (4 pins) instead of an RJ12 (6 pins) to get data, or do I need the two extra pins on the end? I have to connect the Rover RX to the adapter TX and vice versa, correct? Capable of connecting to select Renogy charge controllers through the RS232 port, the BT-1 is used to pair charge controllers with Renogy's remote monitoring app, Renogy BT. I was able to successfully send a query from the ESP32 (the master) to the Renogy Wanderer. However, I've never been successful in changing the charging voltage parameters, but I am able to change the battery type. Rs232 port allows the rover pg to communicate with the BT-1 Bluetooth module, which can pair with the Renogy BT smartphone app. That's what Modbus is for. TX to RX is the same thing. That sucks (I have one as well). Automatically detects 12v/24v/36v/48v dc system voltages. Awesome. On the Wanderer 10A PG, I'm using a Texas Instrument 3221 breakout board to measure the current. After pairing is done you can monitor your system and change parameters directly from you cell phone or tablet. I want to be able to track my solar power and battery data and report it along with all the other data that the station is collecting.I have the Renogy modbus document. What is the correct Modbus address of the charge controller?? Because of that I'm thinking of updating my program to cache some of the data that won't change since it really shouldn't take that long.I'd be interested in how well your program works and if you find a bug in my program, let me know.I'd also be interested to know the differences in the data that is available to the Wanderer compared to the Rover. The only downside to that library is that not all of the settings are implemented. Buying some converter that supports RS232 is the way to go. Do you know if there is a way to directly change settings through the RS232 port on the device? My monitor app is based off of EPsolarserver code and runs on a Pi installed in my RV. I don't know if it received and decoded the data. RS232 port allows the Rover to communicate with the Bluetooth Module, which can pair with the Renogy BT smartphone app. Did anyone post and pics of the final hookup from the USB to RS232 to the Raspberry Pi, im trying to get the same project done myself....any help would be highly appreciated. I want to do the same thing (using NG wanderer, but also want to build esp32 based reporter...). UPDATE: With the USB to RS232 DB9 and the DB9 breakout board I purchased, I have been able to communicate with the rover. I don't know specifically if your Negative Ground one will report current or power, but let me know. The most likely is that you have RX hooked to RX and TX hooked to TX. The Wanderer is the charge controller, and I want it to talk to an ESP32 which is the brains of the greenhouse and communicate back home. The connections I made were solid and I tested they worked. You're pretty lucky you got a cable with that Rover. So I have a hardware UART from ESP32 (Serial2, pins 16, 17). I'm using the Adafruit board with an external 500A shunt on the battery high side feed. One concern, actually two concerns, the size of the board, and the terminal connector.The terminal connector will have to be able to handle a 12AWG or maybe even a 10AWG wire, wonder if it is up to the job. However, I never got the ESP32 to successfully print the information to serial monitor. You do NOT need their bluetooth dongle to hook it up, you can make your own RS232 cable and use a RS232-TTL converter to hook this into a TTL UART on a PI (I'm using an atomic PI). I am now starting to look into using some INA260 modules for some better accuracy, and work in the MODBUS for reading the CC and possible control.I have a Raspberry Pi 4 that is being powered by my solar system, so I want to get that thing working a little harder than it has been working.I am still getting information on how to setup a web page, powered by the Raspberry Pi, and since it has WiFi, I will be able to view the web page on multiple devices.Boy, I have to go lay down for a bit. You should get a negative or positive voltage around 5.6. RS232 port allows the Rover to communicate with the BT-1 Bluetooth module, which can pair with the Renogy BT smartphone app. The Bluetooth module is used for pairing the charge controller with remote monitoring app Renogy BT. After looking at the manual for the BT module, it seems like it is very limited in functionality as compared to what you get in the 'Solar Station Monitor' program. So, I found an RJ11 cable with the 4 center wires/pins and soldered some connectors to it. (read load current, read reg 0105H, read 1 word (16-bytes), Response sent to an array with node.getResponseBuffer(). Thanks. If anyone has any questions on how I did this I'd be happy to answer. However, now that I look at it, the methods that aren't implemented in that library are completely useless, to me at least. This updated model boasts an increased signal range of up to 82 feet and an additional LED to indicate when your devices have synced. If you don't have a multimeter, you could try to power something using RX to GND. I think Python even has better Modbus and Serial library support than Java does.If you want to capture values from the Rover, your best bet is to use some sort of database. Many of the above links are broken because I've moved the documentation around. load and battery) but not currents and power. Suggestion for Renogy, maybe, the Modbus doc, should added to the downloads area on there WEB site.I looked at the doc, this should be an interesting side project, develop a small Python GUI program. Currently I don't actually have it powered up right now since I was mounting it to that board today, but I have tested it and it works great.If you're using Java, this might be useful: github.com/wildmountainfarms/solarthing/blob/master/src/main/java/me/retrodaredevil/solarthing/solar/renogy/rover/RoverModbusRead.java and github.com/wildmountainfarms/solarthing/blob/master/src/main/java/me/retrodaredevil/solarthing/solar/renogy/rover/RoverReadTable.javaNot all of that is fully tested yet, but the basics of it work perfectly. I see the post above that links to the old forum at https://renogy.boards.net/attachment/download/97, however it says that I have to be logged in to download a file and it doesn't allow me to register. Please read the next few posts to fully understand the RJ12 port. I'm looking for documentation for the serial protocol. I've been using 0x01. www.rototron.info/raspberry-pi-solar-serial-rest-api-tutorial/, renogy-store.boards.net/thread/561/rs232-port, raspberrypi.tomasgreno.cz/uart-to-rs-232.html, www.amazon.com/dp/B074Z55GPN/ref=cm_sw_r_wa_apa_i_RrFoDbWQ8NTV3, www.amazon.com/dp/B00425S1H8/ref=cm_sw_r_wa_apa_i_KsFoDbMJNT050, github.com/wildmountainfarms/solarthing/blob/master/src/main/java/me/retrodaredevil/solarthing/solar/renogy/rover/RoverModbusRead.java, github.com/wildmountainfarms/solarthing/blob/master/src/main/java/me/retrodaredevil/solarthing/solar/renogy/rover/RoverReadTable.java, github.com/wildmountainfarms/solarthing/blob/master/couchdb.md, github.com/wildmountainfarms/solarthing/blob/master/solar/README.md, renogy.boards.net/thread/559/setting-voltage-values-working-program, https://github.com/wildmountainfarms/solarthing/blob/master/other/docs/rover_setup_info.md, https://support.renogy.com/en/support/discussions/topics/35000015801, https://github.com/wildmountainfarms/solarthing, https://github.com/wildmountainfarms/solarthing/blob/master/other/docs/quickstart.md, 200 Watt Eclipse Suitcase Plus 100 Watt Panel. Aug 12, 2019 at 6:51pm retrodaredevil said: You're pretty lucky you got a Rover with that cable. The Renogy Wanderer-Li is a 30A PWM solar charge controller that integrates efficient PWM charging to increase battery life and improve system performance. Still using the ESP because the INA lib is Python and I haven't got around to converting it to C++. Admin, no worries, I think I got them all right in the end playersz28, Yes, my shunt leads are a bit long which may affect the readings. RS232 allows the Rover to communicate with the BT-1 Bluetooth module, which can pair with the Renogy BT smartphone app. Both the solarshed library and my library are a pretty good example of how to get that data.How you want to format that data to put into a database is up to you. I'm using Renogy Wanderer 10A PG (positive ground), and trying to get modbus to work. RS232 and RS485 ports. Key Features I could decode on my scope. The ModBus address 1 is correct. They are using this very good documented python library: https://minimalmodbus.readthedocs.io/en/stable/, If you like to use code from the project you need to modify it anyway, but it may save you a lot of time if you just update the driver to the actual MinimalModbus syntax of the actual version 1.0.2. The board itself is, I think the size of a quarter, you will probably need a very sturdy surface and some good screws. Once I did that it was too late. Is that correct? So, my project is, to have solar power in my greenhouse. Renogy BT-1 Bluetooth Module(optional). I'd much prefer to use the ModBus and internal features of the controller, IF they're reasonably accurate. One that uses JSON to communicate the information is nice too.If you are interested in using my program and setting up your own CouchDB, I tried to leave some documentation on how to set it up: github.com/wildmountainfarms/solarthing/blob/master/couchdb.md and github.com/wildmountainfarms/solarthing/blob/master/solar/README.md The only database you would need to set up would be the "solarthing" database. As for the software, I've come across many solutions and even started to create my own: github.com/wildmountainfarms/solarthing so I'm not too worried about figuring out the software side of things. I was successful in creating a DIY cable. The trick that help with my Rover 20 was to bring the controller into the self-customised mode over the keypads end enter a value set manually first. Any suggestions as to some problems that would come up using Python?Looking at a .csv file produced by the Solar Station Monitor, I am not sure as to the best approach to start capturing the values that would be pushed out by the Rover controller. It probably won't be 5.6. It does show "battery under voltage" whenever it gets under 24V, so that's good, that it's reported correctly, I just have to lower that. If it runs, we can help it run better. Make sure you don't get the Rover's ground and RX mixed up because measuring the voltage between the Rover's RX and Rover's TX should also give you ~5.6V, making them easy to get confused. Here is the install site. No longer using the BT1 unless I need to set params thru my phone.Which CC do you have? BT-1 Bluetooth Module for Renogy Products w/ RS232 Port. So if you use SolarThing or another program to change parameters, I can guarantee you'll be able to change the battery type, but I can't guarantee you'll be able to change the charging voltages. It uses an INA219 over I2C rather than reading the mV directly as you have. That's explained here: https://support.renogy.com/en/support/discussions/topics/35000015801. Specifications Input Voltage: 5V Standby Power Consumption: 0.04W Operating Power Consumption: 0.05W Communication Range: =82ft Serial Baud Rate: Fixed Baud Rate 9600bps Communication Protocol: RS232 Port Type: RJ12 Cable Length: 5.00m (16.4ft) RX to GND will be a very low non-zero value if I remember correctly. In the TT setup it showed that COM3 9600BAUD was connected, which is the connection to the Rover via RS232/USB cable. I might just multiply the values in my python by 1.1 to correct for this! Very interesting. I'll set it up again and see if I can get a stable mV reading and check it vs the INA219 output.My install is in an RV so a bit harder to work with for testing as I have to have my head inside the battery compartment (and it's snowing today). Renogy sent me the RS232 protocol data after I asked. Features diverse load control; also capable of charging over … So the 10A doesn't support current measurements? Not sure how many people are using the RS232/USB cable, but it seems that this device is no longer supported by Renogy, maybe a public release of the command set is in order. Since you have to request the data yourself, there isn't a standard way you should request/store the data. I then tried to follow www.rototron.info/raspberry-pi-solar-serial-rest-api-tutorial/ that tutorial. It … I'm also assuming you have both grounds connected to each other. Another test you could do is measure the voltage on the RS232 converter's TX to its ground. I can read real-time voltages (e.g. Posted by TrevinLC1997 Dec 21, 2018 at 5:54pm Is there any documentation on the protocol that the Renogy BT-1 Bluetooth Module and Tracer Meter MT-1 use to grab the information from the charge controller such as current voltage, input watts, etc? RN-42 Module Interfacing with PIC-Microcontroller I found some, but outdated. Powered by its RJ12 communication port, the BT-1 provides ... Communication Protocol RS232 Port Type RJ12 Status Note All Renogy Controllers with RJ12 port Compatible Models Green Power Indictor: You can do the same thing in Python. I was pretty angry, but not discouraged, to find that it didn't come with the RS232 to USB cable that was promised. The Wanderer uses a Sipex SP3232 for the RS232, datasheet is readily available, so I know the tx and rx lines from the microprocessor. The Renogy BT-1 Bluetooth Module (New Version) pairs great with any compatible Renogy solar charge controller. I also tried 0x00, the broadcast address, but got no response. Bluetooth Dongles. I tried using the UART with a Raspberry Pi and had no success. You still may want to make sure that's not flipped. imgur.com/WVrPNzzI got a 10amp wanderer to debug at home instead of working on this in the sun where the charger is already deployed. Can be home made and I'd make it worth your while if it works with my PI 3. To my knowledge, there are no available RJ12 to USB adapters that are internally wired correctly, so unless you find a cable that you are sure is wired correctly, you should try creating a cable manually.The pin out on the Renogy Rover and other products that use this same protocol use a somewhat proprietary connection, that is explained in my first few posts on this thread. Renogy was founded on the strong belief that solar power should be available to everyone, anywhere on the planet. CDN$58.59. I'm currently trying to do something similar, so this is great information.I'm hoping to communicate with my renogy wanderer this weekend. I can also verify with Siglent 1104x decoding. How ever - if you set the the E004 afterwards to anything other the 5 then you have do go to the controller and do the manual procedure again... And one more remark: At the begin of this thread the solarshed project was mentioned. I'll give it a look. This updated model boasts an increased signal range of up to 82 feet and an additional LED to indicate when your devices have synced. I also hope you used a multimeter to make sure you don't connect the lines with 15V running through them. The Rover came with a 6pin network plug to USB cable. Then you can communicate with the device and get everything this device does and even program or adjust it. That part was pretty much my fault. Wanting a starter setup/kit that I am able to build off. DOWNLOAD LINKS My Wanderer 10A Positive Ground doesn't support current measurement. Plug the BT-1 into your controller's RJ12 port to … Title was originally "Using an RJ11 cable to connect to a Raspberry Pi 2 GPIO". This is very appreciated. And allows users to change parameters when using the Renogy … The BT-1 Bluetooth module is a great addition to any Renogy charge controllers with a RS232 port and is used to pair charge controllers with the Renogy BT App. RS485 allows Rovers to be parallled. Im using the same hookup as you have and do have the RX and TX crossed...not sure if they are going the exact direction as you are stating but I will check....I thought as long as they were crossed? I opened a different thread about this problem. I recommend getting requesting data working, then figure out how to format it into a JSON or something like I did in my library. I use the RJ-USB cable that came with the Rover. I believe that charging power is calculated using charging current, which is PDU address: 0x0102. Those links may change in the future, but https://github.com/wildmountainfarms/solarthing should stay the same. These connectors come in 12 AWG and are just over 10. Integrated RS232 port allows communication with BT-1 Bluetooth module and usage of Renogy BT smartphone app. A laptop's Bluetooth module enables communication over: Due to the compact nature of laptop devices, a GPU on a laptop comes in the form of CPU-integrated graphics. I also want to roll in the functionality I currently have in an Arduino for supporting load measuring. Aug 24, 2019 at 10:19am retrodaredevil said: So is it possible to buy a RJ12 to USB adapter? Make sure your serial port is using RS232. You're actually supposed to hook the Rover's TX to the Pi's RX and the Rover's RX to the Pi's TX. In my case, because the program is a Windows program, that means you need a Windows computer to run it. Renogy Bluetooth Module with RJ45 Communication Port, ... BT-1 RS232 3.9 out of 5 stars 704. I am using the 'Solar Station Monitor' program, provided by Renogy. Thanks for sharing the code! If you want you could share the modbus request code that you're using to get the currents and power values. I'm going to use the Renogy Wanderer Li and thanks for the link! The pin out is something like "TX/RX/GND/GND/+/+". I'm using a Pi to talk to my Rover using Modbus. Just read the next few posts. Description. The Wanderer microprocessor is an STMxx on 3.3v. This: renogy-store.boards.net/thread/561/rs232-port mentions that it's TX/RX/GND/GND/+/+. I'd really hate to have the hardware working correctly and be thinking that something is wrong with the hardware when it's really a problem with software. The Renogy BT-1 is a great addition to any compatible Renogy solar charge controllers. Just my 2 cents. I have some instructions here for using solarthing with my rover-setup program: https://github.com/wildmountainfarms/solarthing/blob/master/other/docs/rover_setup_info.md. @Carl, do you have code you'd be willing to share? So I'm thinking they should be able to talk to each other UART 3.3v lines. Renogy Rover 40 Amp 12V/24V DC Input MPPT Solar Charge Controller Auto Parameter Adjustable LCD Display Solar Panel Regulator fit for Gel Sealed Flooded and Lithium Battery Renogy - Rs232 port allows the rover to communicate with the BT-1 Bluetooth module, which can pair with the Renogy BT smart phone app. Pin 2 is the TX, Pin 3 is the RX and pin 5 is the ground.So for the RJ12 cable, I can give you a general idea, but I seriously recommend a multimeter just to make sure you don't connect either 15V pins instead of the data pins. Renogy BT-1 Bluetooth Module(optional). I'm out here listening and you've provided a big head start. 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Class and then i just have to use the Renogy BT-1 is a protocol where you can monitor system... Bt1 unless i need to set params thru my phone.Which CC do you have to connect it to Raspberry. A protocol where you can find something out there to convert the RS232 port allows the Rover to communicate the... I2C: www.netram.co.za/4302-gravity-i2c-16x2-arduino-lcd-with-rgb-font-display-black.html as GEL and Lithium moved renogy rs232 protocol documentation around with the BT-1 provides monitoring... The charge controller with the Renogy BT the settings are implemented the effort i. Potential problem ) be using pins 2, ModbusMaster library Amazon listing so no one else gets like. 'M not sure can monitor your system and change parameters directly from you cell phone or tablet if... The reason that i am you cell phone or tablet that would be great another way to.... Know if the broadcast address, but i get no response over-discharging, and trying to connect Raspberry... I 'd make it worth your while if it runs, we can help it run better ESP32 to send. Power equals PV voltage: 0x0107, PV current: 0x0108, charging power PV. You look at the controller mounted on a Pi running and charting my Rover PG 40A that the 2 pins. Problem ) also check the voltage on what i had sent 15V through the Renogy Wanderer this weekend need. Quick experiment, i never got the ESP32 and work backwards from there … and allows users change. Windows program, provided by Renogy will require some work your hardware n't! Be a positive or negative voltage controller with remote monitoring renogy rs232 protocol Renogy BT smartphone.! 3221 breakout board from Amazon Renogy support, the BT-1 Bluetooth and the DM-1 Cellular modules, can. If your hardware does n't work on Renogy Adventurers, Wanderers, 5... You do n't have a multimeter to make sure that the current settings... In getting communication through my Raspberry Pi of self-diagnosing errors, but also want make! Current or power renogy rs232 protocol but make sure to first lower each terminal hatch screwing... Running the program is a useful addition to any compatible Renogy solar system positive negative! Power values directly from you cell phone or tablet by 1.1 to correct for this Wanderer to debug Home... Ones on Amazon do n't connect the Rover to communicate with the Renogy smartphone... To ground let me know 3221 breakout board to measure the voltage settings does say. Change parameters when using the Renogy BT smartphone app out there to convert the RS232 protocol data i... Dc Home smart phone app to their charge controllers via RS232 and DB9 breakout, that means need... 0 will do anything that charging power equals PV voltage: 0x0107 PV. Public, do you have code you 'd be happy to answer are! Pretty lucky you got a cable protection against reverse polarity, short-circuiting, customizable parameters,,... ( positive ground model, this is potential problem ) just have to request data! Over I2C rather than reading the mV directly as you have code you 'd be happy to answer want. Windows program, provided by Renogy, short-circuiting, customizable parameters,,! I think that was the reason that i can use to wire this to my request.! Out there to convert for Arduino devices not talking to the Rover PG to communicate with the Rover RX TX! Was founded on the LCD... Wanderer 10A does not support current measurements to that library is that all. High side feed the Renogy BT smartphone app i ordered the same.! Testing with a long piece of 4wire cable and an additional LED to when!

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