These lists are saved as csv files and opened by the built in csv python library. This will allow the user to manage lots of lists (patch lists, year lists, day lists, life lists etc.) through menus and add new items to the lists as well as information about them (dates, locations and notes), search the lists for items and of course create new lists. As I have not got the hardware to create and test a recording app yet, I have been working on an app to create bird lists. It is likely the sensors used will change again, probably due to space constraints, but I at least plan to make and tests a breakout with all of these sensors.Īs well as hardware, I have started developing my first Pi Portable Recorder app. This is also super accurate (maybe too accurate for my usecase =D) to within 1.5% relative humidity and within 0.1☌. I am also using an SHT35-D chip to measure temperature and humidity. I am also using a BMP388, an accurate pressure sensor which can be used to work out altitude to within around half a meter. The first sensor are a BNO005 9-axis absolute orientation sensor which contains an accelerometer, magnetometer and a gyroscope as well as a 32-bit cortex M0+ microcontroller which processes all the sensor data using Bosch's sensor fusion software before passing on the data to the Pi. In the past few days I have been further researching sensors to be used with the Pi Portable Recorder and I am currently making a breakout board which will contain them all (for easy prototyping). Schematic For Sensor Breakout Released Louis Parkerson.P.S - A more detailed PMIC log is planned with info on the MP2636 and the AXP209. Meanwhile, if you have any question of course just ask in the comments. Some good news is that I have a schematic for a MP2636 based lipo/li-ion booster for the project finished and am now in the process of developing a PCB for it. I have also put the Super Sensor Breakout on hold as I have sensibly decided that sensors will probably not fit and are definitely not the priorities of my project right now. Unfortunately, the Pi Zero version of this audio board I found is on hold as I investigate why the the schematic file isn't loading =(. Note - the TLC272 supports two input and outputs and a future version will be made to support two electret mics. The easyeda project for this can be seen here - and a picture of the PCB can be seen below. This is an old chip but from what I have heard and read it is still a decent op amp. This should change as I will be receiving a Zerophone soon which has all the hardware required for testing my apps as well of course being a oober cool Pi Zero phone.Īlso, I have finished a basic pre amp for the electret microphone using a TLC272. For development purposes input is still taken from a normal keyboard and some text is still output on my monitor. It is far from perfect but finally all features are at least working. Firstly, I have just finished a basic bird list app which can be found here. All sensors will be optional, with footprints that can be populated if desired.Īlso, in the future, I plan on adding a function for easy sea watching with which you can log each bird of a certain species you see and which direction via a few buttons - for example, one button for Guillemot, one for Common Scoter, one for East and one for West. I also plan on having a BNO005 nine axis absolute orientation sensor as I like cramming on sensors =D. Its main use case is for recording bird song and also having a few other birding related features - creating lists (patch list, day list etc.), recording verbal field notes (very useful in the event of discovering a rarity or possible rarity), a counting feature (for example for WeBS counts - ), conditions logging (temperature, humidity and pressure using the BME388 and SHT35-D) and if the user decides to solder one on a u-blox CAM-M8 GPS which comes with an integrated antenna for location logging used to log where certain birds were seen.
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