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Un workspace de crates Rust sin lógica de negocio — entrega eventos ("tecla pulsada en el puerto 2", "tarjeta leída", "orden BLE recibida") y operaciones ("abre el relé 1", "responde por BLE") — que un binario de aplicación enlazará después: Esqueleto de ejecución: binario estático, tokio, fichero de configuración único, logs a journald, integración con systemd (sd_notify, watchdog), usuario sin privilegios. Capa de abstracción de placa con perfiles declarativos para Radxa ROCK Pi S0 (Rockchip RK3308, Armbian) y Raspberry Pi Zero 2 W (Raspbian), y guía para incorporar placas futuras. Identidad estable del equipo. Driver UART de nuestra pl...

My Epson dot-matrix unit has suddenly stopped behaving as it should and I need a technician who knows this older technology inside out. I’m not yet sure whether the fault is mechanical, electronic, or driver-related, so the first step will be a thorough diagnosis. Once you have isolated the problem, I’ll count on you to source or specify any parts, reinstall or update firmware or drivers if required, calibrate the print head, and confirm the printer is producing clean, evenly spaced output again. You should already be comfortable with Epson control codes, ribbon and platen adjustments, and the quirks of dot-matrix connectivity to modern PCs. If you can guide me through remote tests, great; otherwise tell me what you need for an on-site visit. Deliverables: • A concise di...

R7FS5D37A3A01CFP See my side hardware ready Actually my project . Collect data from plc and push into cloud server The plc have rs232 port some plc ds485 port Protocol may be modbus or some plc own . We give all format and structure Total 10 type of plc See . The collected data from plc push i into 4 sec interval to 3 location Ip address At the same time 1. TCP Ip format 2 location 104 format Maximum tags 100 from plc From that 100 tags 15 tags only we push 104 format See the main key point on ur code the ec200 module always connect with network more details will be shared with potential freelancer

R7FS5D37A3A01CFP See my side hardware ready Actually my project . Collect data from plc and push into cloud server The plc have rs232 port some plc ds485 port Protocol may be modbus or some plc own . We give all format and structure Total 10 type of plc See . The collected data from plc push i into 4 sec interval to 3 location Ip address At the same time 1. TCP Ip format 2 location 104 format Maximum tags 100 from plc From that 100 tags 15 tags only we push 104 format See the main key point on ur code the ec200 module always connect with network more details will be shared with potential freelancer

I need a compact controller board built around the STM32F103CBT6 in the 48-pin LQFP package (or a pin-compatible alternative with the same Cortex-M3 core). The board must expose three independent serial channels: • RS-485 • RS-232 • A UART linked to an on-board serial-to-TCP module that speaks plain TCP/IP Reliability is critical. Please integrate proven over-voltage, short-circuit and over-current protection on all power inputs as well as the three interface blocks. If you are more comfortable substituting a different F1-series part with identical footprints, that’s fine as long as the firmware and pinout remain drop-in compatible. Deliverables • Complete schematic (Altium, KiCad or EasyEDA) • Four/two -layer PCB layout with proper isolation be...

हमें एक अनुभवी कोडिंग इंजीनियर की आवश्यकता है जो सीएनजी प्रोडक्ट्स के लिए फर्मवेयर सॉफ़्टवेयर डिज़ाइन और डेवलप कर सके। इस प्रोजेक्ट में सॉफ़्टवेयर कोडिंग, टेस्टिंग, और आवश्यक डॉक्यूमेंटेशन शामिल होगा। समय सीमा 15 दिनों की है, और उच्च गुणवत्ता वाले परिणाम अपेक्षित हैं।