Others: hardware and software

 Hello everyone,I’m working on diagnosing and rewiring the control system for an Ingrem Veyron J20 gaming chair. The chair uses a servo module with an RJ45 connection to the handheld remote, and I’ve been tracing signals back to the main board (marked ST‑H801S‑V1.1 and ST‑H8‑CORE‑V2.1).Here’s what I’ve established so far:RJ45 pinout from the remote:Pin 1 → Green (likely RX)Pin 2 → Black (Ground)Pin 3 → Yellow (TX??Pin 4 → White (logic/handshake line, not VCC)The board itself has a separate AC power feed.With RJ45 disconnected, the board powers up fine (red LED lights). When RJ45 is wired incorrectly, the board fails to boot.I believe the connections come from UART1 and COM20, but I don’t know how they should map to the RJ45 connector

I have an Queary ,How to design Firmware Of Bridge less Pfc Circuit ?For Below Specifiction input Voltage is varrible(Comes In AC) input current is constant (2.8 amps and 6.6amps )output voltage is constant 24vDCoutput Current Is 1.5AmpsNote : Input Device Name Is Constant Current Regulator .So kindly Suggest How To Design Firmware And Calculation Of Frequency As Per Circuit (Like Inductor RIpple And All)Circuit Digram Is Attached . Regards,Nilmani

Dear technical teamI'm designing a triamped system with the STA540 , in fact it uses two STA540's per unit.  I've divided the system in one STA amplifying stereo treble and mid, and other STA for bass amplifier, but given that bass channel is not stereo (has the sum of L and R bass, I'd like to know if I may parallell channels 1 || 3 and 2 || 4 for a single bridge amplifier, instead of using only one bridge (1-2 or 3-4)Can this chip operate with parallell channels? If it can, is it okay to use the channels that I've listed, or there is a better channel pairing?BestIgnacio

We repair Fire Alarm Panels, and I have a known good chip PSD813F1A that I can read and save the data but when I program the blank device it will program but then gives me a verify error and it doesn't function in the panel. I'm using the Logical devices XPRO programmer with the proper adapter DX2052 (PLCC). It is listed in the program's library so that's not the issue. Not sure if there's a source to properly program this device or do I need special programming software and programmer to accomplish this. Any help will be amazing!! Thanks for allowing me post here.

Hello everyone, My name is Aleksandar, and this is my first time posting here.I’m trying to simulate the operation of the TL494 controller in a full-bridge (H-bridge) configuration using an STM32F103 (Blue Pill) and STM32CubeIDE with the HAL library.Project goal: The aim is to simulate the TL494 controller and apply it to control MOSFETs in a full-bridge (H-bridge) configuration. The goal is to generate two PWM signals that are phase-shifted by 180°.I would like to have full control over the switching frequency (1kHz - 200kHz) and duty cycle (5% - 45%) , and I also want to implement dead time (5%) that is proportional (percentage-based) to the frequency. I have already tried to simulate this behavior in CubeIDE, but I couldn’t get the correct phase-shifted signals.I would really appreciate some guidance or examples on how to properly configure the timers for this. My question is:Is it better to use CH

I have a project of making a point -2-point communication using lorawan protocol with the chip called AI-thinker Ra-09h that have an STM32WLE5 MCU . The problem is i dont have any knowledge in this field and i dont know how to deal with this module 

This board has STM32F103C8 MCU. I applied this patch for USB CDC interface, to successfully read/write data between STM32 and laptop via USB cable. How to make this STM32 enter light sleep mode, while allowing STM32 to maintain virtual com port connection with laptop, and only wake up when I send something to STM32 from my laptop using a terminal app? I tried debugging by putting wakeup_reason in various USB_CDC functions in USB_Device/App/usb_device.c USB_Device/App/usb_cdc_if.c USB_Device/Targe/usbd_conf.c But I didn't see wakeup_reason change after wake up. I tried two ways: // command c-strings char *cmd1 = "cmd_sleep"; while (1) { // check if there is any data received on USB CDC bytesAvailable = CDC_GetRxBufferBytesAvailable_FS(); if

Hello,I would like to gather some information related to enabling LDRC mode on SPSGRF-915 Low Power RF Modules.Below are the documents I am referring to:1.) SPIRIT1 Data Sheet : Section 7.3 Low Duty Cycle Reload Mode.2.) AN4193 Application Notes : Entire document as it focuses on LDCR mode and RX TIMEOUT along with Programming Tips to enable the same.I am currently working with two SPSGRF-915 modules. One is a RF transmitter only and the other is a RF receiver only. The receiver module never talk back to the transmitter. Also, the RF Receiver module is a battery operated and I want to implement the LDCR mode on the receiver.The current software version on my RF communication is a continuous RX Listening on the receiver end. Following the steps mentioned in the SPIRIT1 Data Sheet, I have implemented the below:1.) Upon powering up the receiver module, I keep the RX_TIMEOUT to an INFIINTE Value at the beginni

Hello, as I mentioned in the title, I'm designing a battery-powered UHF RFID reader. This is a challenging project for me; I'm pushing the limits.MCU: stm32wb52cgUHF RFID: ST25RU3993Battery: li-ion (18650)I'm using the ZigBee feature of the MCU. My question is, I need a design that's compatible with both batteries and works at 2.5V levels. Therefore, what kind of power circuit should I create? If I install a 4.2V battery, I need to use a step-down converter. If I use li-ion (18650), I need to use a booster. What do you think I should do? 2-Is a switching regulator used in a UHF RFID circuit? 3- I need to make a booster with the li socl2 battery. When the battery drops to 2v, should I make a step up for RFID reading performance?

i have an old st92F150 that is defect. now i have an extra which is good so i wanted to upload the dump from the good one into an empty one. for this i need STVP9 software. is there a way you guys can help me get this? other link on this forum is expired or something.

Hi, i'm looking for at least a pinout for the STDP6036 or STDP6038 Ic (128-pin PQFP) Triple input LCD controller for WSXGA+ and WUXGA applications

Title edited to clarify "donut board"I would like to connect the LM324(below) to the STM32F103C8T6 on a donut board, purpose to read four IR receivers. VR with highlight T shape is preset 103. IR1, IR2, IR3, IR4, 5V and ground will connect to a 6 pin header, connect to another donut board which contains only 4 groups of IR transmitters and receivers.My task is without jumper wires connect them together but I can’t connect it due to the preset 103 make the circuit too messy. Can anyone help me please.:folded_hands:

Hi,I am evaluating ESDCAN24‑2BLY for long-term reliability in CAN application. The datasheet specifies peak pulse ratings, but I could not find continuous power dissipation / power-cycle lifetime data.Could you provide any internal test results or recommended derating guidelines for continuous or long-term operation?Thanks & regards,Aravind R

Hello,For a lighting application, I am looking for a multiple outputs IC capable of 250 mA per output (or summing several outputs to reach that current), allowing low level dimming (12 bits dimming minimum). It has to include serial communication to be controlled by an MCU. The MCU will control many block of LEDs.Any help is appreciated, Thanks,

Hi,I would want to know the default I2C address of the STSAFE-A120 and if it is possible to change it, as it is done in the A110.In addition, is there any documentation about the content of the STSAFE-A120 I2C registers?Thank you in advance.Regards,Luis

Hi everyone. I’m trying to connect a genuine ST-Link V2 to an AT32F415 MCU using SWD, but the debugger always reports “Target not detected” and shows Device Update: false. Here’s my setup: • SWDIO → SWDIO• SWCLK → SWCLK• GND → GND• 3.3V from the board is present (measured ~3.29V)• NRST is connected• Target is externally powered• Several different ST-Link drivers tested• STM32CubeProgrammer, OpenOCD, and ReFlasher all fail to detect the device• Different cables and different USB ports tested My questions: Does ST-Link V2 fully support SWD communication with AT32 (Artery) MC

Hello,I reviewed a material declaration report for the TS4990IQT online.The attached report lists the MFR item name as "AYX0*Q990ABH."Could you please confirm whether TS4990IQT and AYX0*Q990ABH refer to the same part?Also, does this part contain Dechlorane Plus?I would appreciate your guidance on this matter.Thank you,

Good morning sir  Have a nice day  Pls identify the components name .I don't identify the components name .    I m trying to various type of search tools to identify the components. The component name show N and 24 .pls help  N and 24 both components not identified 

The marking of M41T62Q6F is as follows. I think the date code is 2013 or 2003 10weeks? How to identify the date code is 2013 or 2003?  

We have 2 nos of STEVAL Drone 02. 1)We assembled correctly the motors CW & CCW 2) Propellers are also correctly assembled. We are using STBLE Drone androidapp. We are facing same problem for both the units.Propellers rotates in proper direction  but its not lifting up.instead it lifts slightly 25 cm above ground & then starts rotating around itself & moves horizontally uncontrolled. Then we have to stop it.VIDEO of Drone behaviour attached.Please suggest RegardsShirish 

Hello,I have an issue reading and writing to and from the M95P32. So far it has never worked. I tried using the official ST driver https://github.com/STMicroelectronics/stm32-m95p32/tree/main  but nothing happened. I don't know if the write was successfull but when I tried to read back the data, I only receive 0x00. Here is a sample of the code used#define USE_SPI #include "m95p32.h" std::int32_t eeprom_init() { return 0; } std::int32_t eeprom_deinit() { return 0; } std::int32_t eeprom_read( uint8_t *data, uint8_t size ) { silentlib::spi_lock cs_pin{ device::instance().eeprom_cs }; return HAL_SPI_Receive( &hspi3, data, size, 1000U ) == HAL_OK ? 0 : -1; } std::int32_t eeprom_write( uint8_t *data, uint32_t size ) { silentlib::spi

Hello,   I am looking for the programming specification document in order to develop a socket and algorithm to program this device.   I am aware the device is in obsolete state. Appreciate if anyone can share this information.   Thanks

I assume that in the truth table in page 14 of DS14758 Rev 2:The low & high values in the final column should all be shifted down by one. i.e.nRSTIN+IN-GOUTLXXLOWHLLLOWHHLHIGHHLH

Hi,I need to design driver board for the following PMSM motor specs and need help in selecting an evaluation board or related circuitry. Will STEVAL-IHM023V3 evaluation board work? Why is it now NRND? 

Hi,I am looking for compatible part numbers for ST part# 7004001 and Delco DM133, which I believe are obsolete.The ST 7004001 is also equivent to Ford # N-7000420F-FB001I also believe ST part# TDA7005 may be equivilent to DM133, not sure.I am mostly interested in finding out what 7004001 is and get a datasheet for it so I can see if it can replace Delco DM133.Appreciate any help on this. ThanksDan