Sensor Integration Jobs

I have a junior engineer building the early schematics for an asset-intelligence prototype and I need an experienced embedded-systems specialist to guide the hardware design, write the firmware, and get the first units reliably streaming data to the cloud. The boards must interface with temperature, pressure and motion and more sensors, carry out real-time analysis, perform basic filtering, then aggregate and compress the packets before they leave the device. Security on the wire is non-negotiable, so please be comfortable implementing encrypted transport and key management on resource-constrained MCUs. You will collaborate directly with us on: • Selecting the optimal MCU / wireless stack and finalising the schematic • Integrating the three sensor types and validating their ...

I have an ESP32-D dev board and three unused PAA5100JE optical-flow sensors. I only need to bring one online first, confirm it streams clean motion data, then replicate the solution for the other two. What I already have • A sketch that compiles but never sees the sensor • All parts on hand, breadboarded and powered • Standard Arduino IDE installed on my end for quick testing What I need from you within the next couple of hours 1. Corrected or freshly written code that initializes the PAA5100JE, verifies it over SPI, and outputs X/Y delta values on the serial monitor at 115 200 bps. 2. A clear wiring diagram (hand-drawn is fine if neat, Fritzing/KiCad even better) that shows every pin between the ESP32-D and the sensor, including power, ground, CS, MISO, MOS...

LOOP every ~2 seconds, for each burner sensor independently: 1. Read current temperature from sensor 2. Add reading to a rolling 15-20 second window of recent readings 3. Compute rate of change over that window 4. IF temperature has plateaued (stayed within ~±2°C band) AND plateau duration > 10-15 seconds AND temperature >= 90°C: -> Trigger "BOILING LIQUID" alert - Sound buzzer: 3 short beeps - Send Blynk push notification: "Burner X approaching boil" - Enter cooldown state for this burner (~2 min, suppress repeat alerts) 5. ELSE IF temperature keeps climbing past ~120°C without plateauing: -> Trigger "DRY PAN / FIRE RISK" alert - Sound buzzer: continuou...

I’m finalising the hardware for a new piece of wearable technology and now need the firmware that will bring it to life. The sole purpose of this first release is health monitoring, so everything you write should focus on gathering and processing the following signals with medical-grade accuracy and minimal power draw. 2. What Is Already Completed (Do NOT Redo) 2.1 Hardware Design Deliverables (Final) - COMPLETED The following have been completed and reviewed: ●Final schematic design (Altium) ●ESD / EMI protection design ●Power tree & power integrity design ●RF separation strategy (LTE / GNSS / BLE) ●GSM + GNSS + sensor integration plan ●Final 4-layer PCB layout (controlled impedance) ●PCB stack-up definition ●BOM with alternates & footprint expectations ●Power IC replacemen...

I already have a two-screen interface finished in Squareline for my ESP32-CYD based nervoscope. All component IDs and events are set; what I am missing is the Arduino IDE firmware that brings it to life. Main screen • Shows battery level (%) • Rotates a gauge needle toward whichever of the two RTD probes reports the higher temperature Settings screen • Slider-controlled probe/needle sensitivity • Dark / light theme toggle • Information panel toggle • Screen-brightness control • Temperature unit toggle with Celsius as the default • Sleep-timeout selection Your task 1. Import the finished Squareline project, wire it to LVGL (or the display library you prefer) and produce a clean, well-commented .ino sketch. 2. Read both RTD sensor...

I have a Particle Boron development board and would like to create a compact proof-of-concept monitoring system using two reed switches and a split-core current transformer (CT). The device should continuously monitor the sensors and automatically send an SMS notification to my phone whenever either reed switch changes state or the measured current exceeds or falls below configurable threshold values. The firmware should be developed for Particle Device OS and include cellular SMS functionality. Each alert message should report the current status of both reed switches, the real-time current measurement from the CT sensor, and the exact timestamp when the event occurred. I would also appreciate assistance in determining and configuring appropriate threshold values for both the reed switch ...

I'm looking for an experienced hardware/embedded engineer to build a first working prototype of a wearable sensor vest for athlete movement and heart rate monitoring. Scope: Sensor 1: GPS + 9-axis IMU (accelerometer, gyroscope, magnetometer) — for speed, distance, direction, and position tracking Sensor 2: Heart rate sensing — open to your recommendation on approach (optical/PPG vs. ECG) for a first prototype, given the vest will be used during physical activity/sport Data transmission: BLE to a nearby tablet/laptop Physical form: lightweight vest/garment insert, worn on the back, under 150g target, minimum 3-4 hour battery life, sweat-resistant What I need from you: Schematic + PCB design Firmware for both sensor sets A basic enclosure (3D printed is fine for this stag...