Pharmaceutical cold chain monitoring hardware for medicines storage.
Temperature monitoring hardware for medicines storage, designed and built as one job: sensor board, firmware, radio link and a database where each reading carries its timestamp. That work starts from a temperature node of our own: four channels over LoRaWAN, currently a single trial unit.
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The problem
Anyone storing medicines will hear MHRA GDP, EU GDP and, for electronic records, FDA 21 CFR Part 11 named in connection with temperature records. We are an engineering consultancy, not a compliance assessor, and sign-off on a regulated system is separate work that we would scope with you. What we can design is the part underneath: a device and a data pipeline whose records do not quietly go missing. That means readings stored with timestamps, a clear account of how a gap would show up and a stated limit on what has been proved. Which of those matter most depends on your users and the rules that apply to them. A record that looks complete but hides a sensor fault is worse than an honest gap, so how the device reports its own health matters too.
What we'd build
Temperature sensors and a timestamped record for medicines storage
A temperature sensor for fridges and storage rooms, with firmware, a wireless link and a timestamped data store. It is what we would design with you, and it carries no validation or certification of its own. The first questions would be which storage points you need to cover and what your compliance team needs the record to show.
| Layer | What we'd do | Detail |
|---|---|---|
| Electronics | A custom board with probes suited to the fridge or room, on a low-power radio module with battery power. | Decisions to settle first: probe type and placement, battery replacement, and how the unit is identified so a reading can be traced to a location |
| Firmware | A reading schedule you set, with each reading stamped before it is sent. | On our node, after the fix, a forced hang triggered a watchdog reset and the node rejoined on its own |
| Radio | LoRaWAN, NB-IoT or BLE, chosen for the building and for how the data has to reach you. | Gateway placement and a plan for what happens to readings if the link drops |
| Data | A telemetry database that keeps every reading with its time, with exports and alert rules shaped to the records your compliance team asks for. | Who can see and export readings, how long they are kept and how gaps are shown |
| Mechanical | Probe mounting and an enclosure for your storage environment, scoped with you at the start. | Fixing, cleaning and the effect of the enclosure on how quickly a probe follows the air temperature |
How working with us goes
- 01 Scope We agree what has to be built, where it lives and where the data goes.
- 02 Prototype Working hardware and firmware on your bench, tested against real conditions.
- 03 Pilot A small batch on real sites, with fixes folded back into the design.
- 04 Production Design for manufacture, a production run, and support once it is in the field.
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Have a medicines monitoring device that needs designing?
Custom hardware, firmware and software, from first sketch to production.
Talk to us about your project alessio.grespi@gmail.comWant it deployed, ready to run?
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