The Safecast bGeigieZen builds on a decade of worldwide user experience with our award-winning bGeigie Nano, and is similarly compact, portable, and rugged. The design of the Zen is in direct response to requests to have a Safecast bGeigie that is easier to build, and it improves performance and functionality in many ways. The bGeigieZen utilizes a solid-state main PCB board on which most of the electronic components are pre-mounted, reducing the total number of parts to assemble from 60 to 20. The bGeigieZen kit has many fewer connections to solder than the Nano, and consequently the time required to build it is only about one hour, as opposed to four or five typically required for the Nano.
Over the years since the bGeigie Nano was introduced in 2013, a number of its original components, including the GPS unit, the display, and the Arduino FIO processor, were discontinued and became hard to find, so we sought improved replacements. We found the M5Stack to be a good solution for processing, control, and display functions. The M5Stack has a lot more memory than the FIO, which makes it more flexible and more easily customizable. With a much larger and clearer 320 x 240 pixel color display, the M5Stack gives the bGeigieZen the ability to provide more information to the user, including QR codes for easy linking via smartphone to online data. Programming and firmware updates are simpler than in the Nano, and use a standard USB-C connection. The bGeigieZen also uses a newer GPS module with better performance, and we’ve made the battery easily removable and replaceable by users. With wireless connectivity built-in, the bGeigieZen can be easily switched to realtime mode for use as a fixed monitoring station. All-in-all, the bGeigieZen is the result of helpful feedback from the Safecast community. As always, Safecast will continue to refine and improve it going forward.
bGeigieZen and bGeigie Nano compared:
bGeigie Nano | bgeigieZen | ||
---|---|---|---|
No. of Components | 60 | 15 | |
Sensor | LND-7317 2” pancake Geiger-Müller | LND-7317 2” pancake Geiger-Müller | |
GPS | Adafruit Ultimate GPS | Beitian BE-880Q | |
Battery | 2000mAh 3.7V 7.4Wh Li-Po | 3000 mAh 18650 LiPo (removeable) | |
Battery life | |||
Processor | Arduino Fio | M5StackCore2 | |
Display | Adafruit Monochrome 128x64 SPI OLED | M5Stack Core2 (integrated) 2” 320 x 240 Color | |
Onboard memory | 32kb flash, 2kb RAM | 16mb flash, 8mb RAM | |
Removable Storage | MicroSD | MicroSD | |
Data and firmware updates connection | FTDI | OTA, Wi-Fi, USB-C | |
Power supply | Medcom iRover (HVPS) | Safepulse (HVPS) | |
Wireless upload data | Optional BLEBee or bGeigiecast | Integrated | |
Case | Pelican 1010 micro-case | Pelican 1015 micro-case | |
Size | 14.9 x 10.3 x 5.4 cm (5.88 x 4.06 x 2.12 in) | 17 x 9.9 x 4.7 cm (6.68 x 3.88 x 1.86 in ) | |
Weight | 440 grams | ||
Assembly time needed | 4 hours | 30 minutes | |
Interface interaction | 3 switches | 3 programmable buttons (Core1) and touch screen (Core2) | |
Motion sensor | None | MPU6886 |