Frequently Asked Questions

Can you summarise the hardware differences of all EDTrackers? How do they differ?
Last Updated 7 months ago

The following is chronologically how EDTracker has developed.

EDTracker DIY
EDTracker started off with a home-made solution that we call "DIY". This isn't something we cover in great detail here, as it's not something we sell commercially, but is an open-source approach allowing you to build your own EDTracker out of Arduino-style components. Full details are on www.edtracker.org.uk. Generally, the hardware uses a Sparkfun Pro Micro 16MHz Arduino clone along with an Invensense MPU-9150 or MPU-9250 breakout board.

EDTracker Pro (Revision 1)
The first Pro model makes use of a 32K 8-bit 16MHz Atmel microcontroller coupled with an MPU-6050 MEMS gyro sensor and an HMC magnetometer. This was sold as the wired model all the way through to October 2017. Revision 1 was only ever sold in wired-only configuration.

EDTracker Pro (Revision 2)
There is a small batch of Pro Wired models designated revision 2, that used a combined gyro/mag sensor (the MPU-9250) and dropped the HMC mag. This was only a small run, anticipating the discontinuation of the HMC mag. However, we moved to the Revision 3 design instead, so it wasn't a big batch run. It is functionally identical to the revision 1; it existed purely because supply of the HMC magnetometer was drying up. Revision 2 was only ever sold in wired-only configuration.

EDTracker Pro (Revision 3)
The revision 3 design started off as the wireless model, and moves to an Atmel ARM 32-bit microcontroller running at 48MHz, with much more flash memory (64+256K). It still uses the MPU-6050 MEMS gyro but with a new Memsic magnetometer. It also had additional capabilities necessary for the wireless side of things - intelligent charge control and a wireless transceiver.

A wired variant (essentially the same but without the battery and wireless aspects fitted to the board) was sold from October 1st 2017 onwards. As with previous revisions, the wired version is functionally identical to previous models, although we hope that the additional memory and processor capacity means we might be able to do more things in the firmware in the future.

External Appearance
All EDTracker Pro's use the same moulded plastic enclosure so are visually very similar. Early models were shipped without the EDTracker logo screen print but this was introduced later in the Revision 1 batch. Wireless models are easily spotted since they have an on/off switch sticking out of the side!

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