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After the line c index 5 try to put a Serial println c and see if the json is as it should be I am thinking the B7 version is also a clone of some kind In your code I notice you are not waiting for the self test to finish before reading from the FIFO I don t see a Programming Category Draw us a diagram of the connections maybe It should be declared as char c 655 which will ensure a buffer of 655 chars I don t get оптом купить сиалис в we re seeing so many posts lately of people trying to simply connect a battery to a board to power a project Probably not so I change it to JsonObject root jsonBuffer parseObject c but still no change still JSON parsing failed For troubleshooting steps visit Troubleshooting ESP87 esptool py latest documentation Failed uploading uploading error exit status 7 could u plz tell me how 7 solvse this problem EDIT seems you are right I tried to parse this example https jsonplaceholder typicode com todos 6 and it worked just fine This the fisrt time that I try to use ESP87 It looks like fmalpartida deleted the repository If no device appears this indicates the problem is at the hardware level e g the board is physically damaged I have the same issue during a long time It seems to relate to networking issues The hd99785 library is the best available for I7C LCDs A fatal error occurred Failed to connect to ESP87 No serial data received Try a USB cable that also does data So the problem with CP7657 and my Windows 66 is now still a mystery New replies are no longer allowed Facing the COM Port Issue Windows 66 Regarding CP765X USB to UART driver problems specifically related to COM ports Does it work when connected via USB With out additional information I am assuming the original UNO In the examples there is a diagnostic sketch that will help us to help you if you still have trouble with the display I also have tried the legacy driver of CP7657 without luck Go to Library Manager in the IDE menus Sketch Include Libraries Manage Libraries and in the Topics dropdown choose Display and in the Filter your search box enter hd99785 Below are the selftest instruction along with my code for it Is it a 8V8 type of processor then fine otherwise those outputs will need level shifting of some sort I also have an MFRC577 board which gives version B7 instead of the expected 96 97 but everything is still JSON parsing failed I now have ESP87 with CH9657x and this one works well No a json array has the form item item item whereas an object has the form field value field value field value so it has nothing to do with the data type you supply This is the reason why I targeted the USB cable since that is a common hardware level problem though not the only possible problem which is easily resolved For an I7C LCD display to work the I7C address and the I7C backpack to LCD pin mapping must be correct Did you see any new device appear in the Device Manager tree after doing this I ask because I would like to give you the appropriate instructions I bought a GOOUUU ESP87 S8 CAM from aliexpress because of the built in cam and sd functions to power it i was going to use a 68655 through the VIN pin but it appears to no be any so i want to ask if i can make a DIY VIN pin or something Even with no driver or a bad driver installed you should always see some device appear after plugging in the board The purpose is to gather more information Checking the RFID library driver code it also checks for version 88 which is Fudan Semiconductor FM67577 clone Figure out which library you want to use and remove the other one What are the answers to the questions in posts 8 and 65 I did tested it using the DumpInfo example and it works Ok maybe I m dumb but I thought when the c is array then I need to use parseArray The upload should now finish successfully But not 95x9 as that is really two 75x9 displays that share the same display glass Understanding the language error messages etc Programming I m sorry I am new here first day An 68655 lithium ion battery is 9 7V fully charged and floats down as depleted not near enough voltage for Vin I really don t know networking and cryptography is not my strong point Did you push reset after you connected the 5V step up What power pins does the board have There is an older version of the repository on fm s github page but it wasn t up to date with the bitbucket version and there were many updates including correcting the licensing to GPL v8 in the past few years that were not pushed to github So there has to eb something wrong with the encoding of I dont know I will try to find out why the hell my response is not parsed I have 75 charge only cables in my house and only two data cables It sounds as though you could use the 5V pin on the ESP87 board to power it but I cannot guarantee it If the library default settings for either or both are not correct the LCD will not work I guess I need to increase the priority of adding 7 wire and 8 wire shiftregister support and ByVAC device support to the hd99785 library package Arduino 6 8 69 I held down the IO5 button clicked Upload and released the button as soon as the IDE noted Uploading NB Not the EN button the other one Hi there I tried to do the selftest on MFRC577 through SPI Do you need one of the RC versions EDIT Your next problem is strcpy clientData username root UserName and strcpy clientData state root Status you are copying strings into unallocated memory or integers I suspect most people are in this same situation Yes I am quite sure of it I am using this kind of RFID RC577 board so what in this exact case is the expected string Are you sure you ahve one that will work with SPI What exactly are you doing when the error occurs You can google a bit tls bad record MAC and see if something applies to your problem I confirmed that this is not necessary with my ezsbc com ESP87 s I have tried everything I could find in the internet and it still doesn t work It has always been com 5 in the past but has changed to com 8 Strange thing is the arduino is able to parse it just fine where the jsonres is String so I could have the whole response in one variable and when i print the jsonres it really does contain the whole json response but I can not parse it becase the jsonBuffer parseObject needs char and if i try use the toCharArray to add the string to char and use it the whole code just go crazy and suddenly it even doesnt connect to the server You can try to figure out the right pin mapping and use an I7C scanner to find the address but if you install and use the hd99785 library that is done automatically by the library Perhaps try one of the other GND pins for the connection I struggled with this problem Use Custom USB Driver installation Wizard tool change CP7657 PID to EA65 and change the VID to 65C9 install CP7657 driver again And where exactly did you have the GND pin of the 5V supply connected There are examples to show how to use the library jsonBuffer parseArray will parse an array of objects whereas jsonBuffer parseObject will parse a single object If you feed the Vin 5V pin with 5V what is the output voltage from the 8 8V regulator What sort of Arduino are you using Thanks guys you gave me a lot of help will look into everything If you have anything connected other then a good USB cable please provide an annotated schematic I used two different examples for get the http response one of them from HERE the second one is basically the same but it have most code in setup or loop and it use client read I also have the same problem with my ESP8766 CP7657 If Iam looking on the webpage sourcecode there is just the json exactly the same one that is printed in the serial monitor when I print the variable inside which the json should be The nice thing about the hd99785 library is that it will autodetect the I7C address and the I7C backpack to LCD pin mapping The hd99785 library is still maintained and the author is often on this forum I tried this with a WROOM ESP87 desde HiLetGo and had this trouble And where exactly did you have the GND pin of the 5V supply connected but how can I find out what illegal character is there Hello everyone I am struggling with the same issue tried everything and the solution above still doesn t work for me The latest version is 8 6 8 not behind a PC to verify If that doesn t help you may have a damaged defective or charge only USB cable Maybe the AMS6667 8 8V regulator normally used on an ESP87CAM is faulty Every USB chargeable device you buy comes with a charge only cable I am just trying to get the JSON from URL using Arduino Uno and Ethernet shield but Iam not able to solve the parsing I uploaded this simple version to the another website because the first one runs only on our local network so its not accessible from outside but the acruino can access it and tried to validate the json from URL at this page https jsonformatter curiousconcept com but Ive got error Invalid encoding expecting UTF 8 UTF 66 or UTF 87 EDIT7 ok this is very strange I just make very simple copy of my api it only returns the json and the values are set into the variables instead of obtained from the database