Requiero realizar la conexión automática entre dos ESP-01. Funciones deseadas: - Pulsar botón (transmisor-maestro), conexión automática entre el transmisor y el receptor - Mantener conectividad estable al estar cerca (1 o 2 metros) - Enviar a dormir el dispositivo ESP-01 (transmisor-maestro) para ahorro de batería. (siempre deben estar conectados) - Encender un led (receptor-esclavo) cuando se pierda la conexión (solo se debe perder la conexión si los ESP-01 están fuera de rango en metros)
Buenas noches a todos, quisiera hacer un control de asistencia de estudiantes que registre hora de llegada, hora de salida, registro de estudiantes (nombres - curso), capacidad de agregar o quitar estudiantes y registrar sus huellas, que genere un informe que se pueda visualizar en la computadora (sistema operativo windows), mediante wifi, para poder buscar si el estudiante asistio a la unidad educativa, y ver en que dias falto. para el proyecto cuento con: ESP32 dy50 fingerprint sensor arduino uno.
Need an expert in Assembly Programming with AT&T syntax
I have a pinball machine with a suspected faulty PCM1755DBQ ship. I have the replacement chip but need it replacing on the MOU board. It’s a surface solder. This is a very small surface mount component that measures approximately 5 x 6 mm (including the chip legs).
Hi, I am looking for somebody who is experienced with the microchip VSC7514 to review electronic design and troubleshoot. We need somebody who is experienced with ethernet protocole. We currently have many items working but there is an issue as when the PC sends some frames to the VSC, nothing is answered. Thanks
I'm working on IoT project. I'm not very technical. I need help to write a python code to allow raspberry pi to automatically connect two Bluetooth devices to specific serial ports rfcomm0 and rfcomm1. and then I want the python script to automatically start on reboot. would require Video call to show everything in details. I might not be very clear about this so please ask me any questions.
i already worked on that project but not so much expert so plz guide me on team viewer or anydesk remotely at my system The job will consist of assisting me when I get stuck on code, some task during the development process till final output
We have few sensors connected to esp32 and we would like to show the values in hdmi monitor via esp32. You need to establish uart, I2c or any other (not mqtt) connection between esp32 and I2c and make them displays le. You don't need to worry about sensors, your project will be only to connect esp32 and raspberry and display via hdmi port
We are looking for an arduino expert to write code for arduinos. Experiance with actuator, servo, stepper motors, various sensors, key pads, LCD screens, batteries, and other electronic components is essential.
Hi, I want to develop 10Msps, 1MHz arbitrary waveform generator. The device should have a PCIe interface to connect to Raspberry CM4's PCIe bus. The following components must be used. CH368, STM32F4 or G4. 10Msps DAC. Deliverable: * Hardware design (EasyEDA, KiCAD, or Altium) * Linux Driver * Demo Python CLI application Timeframe: Until before Dec starts
It's a device that counts objects that passes by. Pressing the start button on the 4x4 keypad will start the counting of objects. Every time the interrupt is triggered(falling edge), the count should increase by one and be displayed on a 5-digit seven-segment display. The code is written by another Freelancer who is not available at the moment, and I need minor changes in the code. Point no. 1: I am using the Up and Down buttons of the 4x4 keypad to set the values by incrementing and decrementing by 1. But if I don't release the button quickly, the count is sometimes incremented 3 to 4 times. I want the code to be changed so that when the button press is detected, it will increment by only 1 value and wait for the pressed button to release. Point no. 2: The value which is set...
attached are design files for a PCB. I would like someone to replace the current MCU with an lower cost MCU. this involves both the recommendation of new MCU and the laying out of the new one.
Need to know Mplab Programming for PIC16F628A. Compiler is CC5 x compiler. Details will be send by chat.
Environmental Citizen Sensor Station by FIfF eV Baseboard with MC, sensors, solar power supply, jacks and socket for LoRaWAN piggypack. for temperature range -20 .. 80°C (or more), for outside use Project has to be done with KiCad 6. - capture well defined components and footprints and/or take it from KiCad Library - draw schematic, design process in communication with me - draw pcb layout - mayor steps have to be cleared by me, drc and erc have to be correct - publish all project files on github - order some prototypes to be produced ================================================================== - rectangular PCB, 4 Layers, ca. 135 x 110 mm - PCB to fit and screw-able to the four corners into 5U330801 case - 2x socket 1x20 pin header jack 2.54 for STDES-WL5I4SBB MB1842 UF...
Our board is flashed linux kerel build and we can read & debug jtag, next steam is to create bootloader firmware file from the kernel enviroment 1st flash: (modified files) , , , , , , ,, , , , , , , , , , , , , , , , , , , , , , , , , (doesn't include bootloader) - you can only detect jtag now; Create and install bootloader: example respitory how to create bootloader file, which files are required to adjust; bootloader/u-boot-2014.07/arch/arm/cpu/armv7/sun8iw17p1/ dram/ makefile - mmc/ mmc.c mmc.h mmc_bsp.c mmc_bsp.h mmc_def.h (mmc.c - has function to erase, partition mmc->erase_grp_size = 1; mmc->part_config = MMCPART_NOAVAILABLE;) - spl/ makefile clock_spl.c ctype.c debug.c eabi_compat.c gic_spl.c gpio_spl.c rtc_region.c serial_spl.c smc_spl.c smta_spl.c ss_spl...
Must know ST tool chain, GIT and JIRA workflow. Be intimately familiar with RTOS e.g. FreeRTOS. Know Linux and AWS. Proficient with memory management, sensors, controls, and various communication protocols (QSPI, ModBus, IP, CAN, BacNET, MQTT). Have had direct experience with control systems. Must know:STM32 with FreeRTOS In your application write 'RTOS' on top of your bid to avoid bot bidding Thanks, Link4
I'm seeking help setting up a process to upload our programing to an Olimex (Arduino) board using TAG. I have some "TAG" type hardware but I have not been able to connect all the dots. Freelancer must be available during USA business hours.
For this project an Arduino programm is needed which measures the frequency of a speed sensor is measured and forwarded until a certain frequency. For a higher frequency manipulated values must be given to output. Program should be automatically in manipulation mode but should be possible to disable and enable by getting double input high low hig within 2 seconds. pin7 = input enable disable Pin 8 = input sensor Pin3 = Output additional inforamtion and calculations are done and will be provided.
Need to perfectly time the LED lights on a cycle wheel to form an arc irrespective of the RPM of the wheel. we expect you to:- - Design the PCB - Provide circuit diagram - Suggestion on better sensors that can be used to perform this activity
The pcb design that i made has an small error and i need someone to help me figure out the issue. Its a combination of Arduino Nano MCP328P + MCP2515 CANBUS board but in a smaller size with lots of extra arduino nano stuff removed as i will not be needing it. MCP328P chip and FDTI chip do communicate with PC and all digital/analog in/outs work quite well so no issues there, however the MCP2515 part is not able to receive nor send CANBUS messages so i am guessing within this simple pcb design i made an error that i cannot figure what is.
I have a motorized TV lift, i am able to control the lift by nodemcu. But now i want to make this device in production as want to sell this module. And my client will easily connect it with google home and alexa, and control the lift
Need engineer to help with Emergency Preparedness Plan for small water system. TCEQ wants system to have a generator with fuel for at least 48 hours. Incoming power has a 200 AMP main breaker single phase power. attached is a partial application. Think they want blue prints for generator site on location.
the system will comprise a raspberry pi zero with 433mhz receiver to receive code hoping remotes. it will also have 4 relays to controll gates etc when the activated by remotes. The system must have a web interface for managing of remotes and assigning it to different users and 1 of the 4 functions The system must also keep a log of remote presses The web must also have a user management system where only admins are allowed to add / manage users, normal users are only assigned remotes
Looking for a hardware/firmware engineer skilled and experienced with STM32 CubeMX development environment to provide some guidance and training to speed up our learning process. Experience of projects involving BLE is a requirement. Time will be purchased by the hour and you will be training two engineers simultaneously, remotely.
Project based on IOT and PCB designing. Need a IOT engineer who can design me a compact PCB for home automation project it should be successful with all the elements perfectly placed and should give a best outcome. please look the reference videos pcb gerber file - youtube video- ----------------------------------
Developer a microcontroller (in the beginning could be Arduino, etc. - later own controller hw) application that does control temperature on a device and modifies performance settings (volt, amps) based on some characteristics. It uses input and output information via a touch display or OLED/steering buttons. Needs to control also a few actuators/relays.
I am looking for a PLC Programmer in Maine that is familiar with Melsec Q Series interfacing with Wago profibus field controller and Mitsubishi HMI. The goal would be to find new HMI as those one have become difficult to read and use over the years and of course re-inject the program in the new HMIs. Also it would be good to upgrade the install in order to facilitate the upkeep of this installation.