The first prototype

A project log for Portable environmental monitor

A handheld, battery powered, sensor array unit for environmental monitoring focused mostly on air quality using a global infrastructure.

Radu MotisanRadu Motisan 08/07/2015 at 00:450 Comments

It's been a crazy run, trying to make this happen. After less then one month I now have the first functional hardware iteration or the first prototype. The Portable Environmental Monitor has been brought to life! All that's left is finalising the enclosure (it will be a nice rugged aluminium enclosure, small enough to fit the palm of the hand, despite the many sensors packed inside) and the software (both the firmware and the server side for centralising data sent via the esp8266 module). Then there are the small improvements, part of every product's path.

uradmonitor_d_first_prototype_1 uradmonitor_d_first_prototype_2 uradmonitor_d_first_prototype_3
There were a few issues like regulator getting a little too hot, unhappy to have a boost converter as a neighbour, or a wire that had to be cut, because I forgot to design a diode in place to stop the battery driven inverter from charging the battery. Well, these things happen, the fix was easy, and didn't even damage the PCB:

To comply with Stage 2 requirements of the Hackaday Prize competition, I had to shoot a 2 minutes video, and this was an excellent choice to present the prototype in its current form, and to iterate a few of its construction details: