Recap: I am building a wireless vitals sensor node (heart rate, SpO₂, temperature) that reports over BLE into Home Assistant as a smart way to keep watch over our loved ones, built up in three phases — DK bring-up, a custom miniaturized nRF52832 PCB, then a Matter over Thread proof of concept.
Past Posts
- VitaRF - Part 1 - The Plan
- VitaRF - Part 2 - Interface MAX30102 on NRF52
- VitaRF - Part 3 - Interfacing MAX30208 on NRF52
- VitaRF - Part 4 - Sending Sensor Data to Home Assistant via BLE on NRF52
- VitaRF - Part 5 - Matter over Thread on nRF54L15 with Home Assistant
- VitaRF - Part 6 - An nRF52-Based Heart-Rate & Temperature Wearable PCB for Home Assistant
- VitaRF - Part 7 - Adding a Philips WiZ Smart Bulb to Home Assistant
Paste, place, reflow
This is the whole process in one video: applying the paste through the stencil, placing the components, and the reflow on the MHP50.
Music by Dmitrii Spis from Pixabay
I will explain the drivers and the final integration code in the upcoming post.
Final Notes
Assembling multiple boards tests your patience, and it is a good way to practice staying calm and making precise movements. The PCB design came out flawlessly, with no mistakes identified yet. Stay tuned for the next post. The Video is made using EffectCraft and FilmCraft. It's not adobe. But again, I have no need to spend on adobe when Open source works well. Thanks to Jorat for the reminder.
