MQTT Jobs

I need a complete hardware-to-firmware solution for a low-power, standalone temperature and humidity monitor that relies on 4G/LTE rather than Wi-Fi. The core will be an ESP32 driving a SIM7600G module, paired with a DHT22 sensor. Collected readings must be published over MQTT to my Supabase/PostgreSQL back-end. The device will sleep most of the time, wake on schedule, take a reading, push it securely, then drop back into deep sleep. It also has to recognise a lost cellular link, attempt reconnection gracefully, and log any failures for later review. Power comes from a Li-po pack, topped up through a USB-C port, so the design needs an efficient charging and protection stage. Please deliver: • Complete, readable schematic (PDF + source) • Production-ready PCB layout with G...

NOTE - This is a specialized industrial telemetry integration project and is not a general web development, app development, or IT support engagement. PLEASE CHECK YOUR EXPERIENCE TO THE SCOPE PRIOR TO RESPONDING. We have an installed heavy-duty telematics unit currently capturing both CAN and J1939 data streams. The remaining requirement is the implementation of a structured cloud-based telemetry environment capable of converting the raw incoming data into organised, validated, and continuously exportable datasets suitable for integration into our AEMS™ analytics stack. The engagement will begin with the remote commissioning and configuration of the device within a cloud telemetry platform environment. Platform selection remains flexible and may include AWS IoT, Azure IoT, Cloudfl...

I need one production-ready showcase device built and shipped within 3–4 weeks. This goes directly in front of investors — it must look finished, not prototype. The device: A wall-mounted solar monitor called VEO. Round display showing live data. 24-LED NeoPixel ring glowing green (healthy) or red (fault). Compact enclosure. Power on → demo starts. No desktop, no setup. Your job: • Mount Pi Zero 2W, round display, and NeoPixel ring into a clean enclosure • Wire NeoPixel ring concentrically around the display • Configure Pi to boot headless directly into existing Python app (already written) • Ensure Wi-Fi auto-connects on boot Enclosure: 3D printed, acrylic, or machined — your choice. No exposed wiring. Display flush with front face. LED ring ...

I’m putting together a small outdoor rack and need an electronic sensing solution that can tell me, in real time, whether something has been placed on—or removed from—each shelf. Cameras are off-limits, so I’m looking for a clean sensor-based approach that works equally well with mixed materials such as metal, plastic, or any everyday composite an item might be made from. Because the rack will sit outside, the hardware must shrug off normal weather exposure—sun, light rain, the usual seasonal swings—but it doesn’t have to survive arctic freezes or tropical monsoons. A compact, low-power design is preferred, and I’m open to ultrasonic, IR, capacitive, load-cell, or any other sensor technology you feel is best suited to the job, provided it st...

Je développe actuellement une caméra de vidéo-surveillance sur batterie basée sur le module Lilygo T-Camera S3 (ESP32-S3). Le boîtier est terminé ; il me reste à créer le micrologiciel qui fera le lien entre le matériel et la future application mobile. Objectifs principaux • Activer la détection de mouvement embarquée. • Enregistrer automatiquement une courte séquence vidéo sur détection + envoi cloud si le client a souscrit à cette offre • Diffuser un flux temps réel (RTSP ou autre protocole léger) accessible via Wi-Fi. • Envoyer des push notifications via Wi-Fi à l’application mobile (l’app n’est pas encore dévelo...