OrPI Preorders - Navigation Expansion Board for Raspberry PI. miscellanea

As we have already mentioned, at the moment we are developing two versions of devices for the blind. The first combines computer vision and global navigation and is designed to solve the widest range of problems that they face in everyday life. The second is a specialized GPS / GLONASS navigator, designed to replace the solution that was widely used by the blind - LoadStone with Nokia's button buttons. Navigator is also an alternative to quite expensive and closed foreign devices Trekker Breeze and Kapten Mobility .

To reduce the price (and also in the hope of attracting the community), the navigator is based on the Raspberry Pi, supplemented by a board of our own design, which includes a GPS / GLONASS receiver, compass, gyroscope, accelerometer, 3G modem, and the ability to connect a battery and control its charge.

We also mentioned that we will sell this fee separately as well (in the hope that it will be useful not only for us) - to reduce costs and improve quality at the expense of mass.
And today, with excitement in our voice, we announce the start of pre-orders, leave applications - oriense-tech.com .
We have a small batch, which we are ready to send in the coming week, a larger batch will be ready in a month and a half.
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Cost - 6999 rubles for the version with a modem, 5499 - for the version without (“fresh” marketing move with -1 ruble;)

Specifications

GPS / GLONASS

• Base Crystal: MediaTek MT3333
• Number of channels: 99
• Support of interaction with SBAS systems (WAAS, EGNOS, MSAS, GAGAN)
• Capture time
  - during hot start outdoors: <1 c
  - with cold start outdoors: 32 c
  
• Accuracy of 2D localization -
  - during the autonomous work: 3 m
  - when using SBAS systems: 2.5 m
  
• The refresh rate is programmable from 1 Hz to 10 Hz
• Height range: <50000 m
• Speed ​​range: <515 m / s
• Supported Protocols:
  NMEA 0183 ver 4.1, 9600 bps, 1 Hz, CGA, GLL, GSA, GSV, RMC, VTG
  
• Antenna Type: Ceramic Patch Antenna
• Frequency range:
  - 1575.42 ± 1.023 MHz
  - 1598 - 1606 MHz
  

Accelerometer / Gyroscope / Compass - MPU-9150

• digital output: MotionFusion data on 9 axes in a rotation matrix, quaternion, Euler angle or raw data
• 3-axis gyroscope with sensitivity up to 131 LSBs / dps and a full range of ± 250, ± 500, ± 1000 and ± 2000dps
• 3-axis accelerometer with programmable full range ± 2g, ± 4g, ± 8g and ± 16g
• 3 axis compass with full range ± 1200µT
• integrated signal generator with an accuracy of ± 1% over the entire temperature range
• maintains load of 10 thousand g

3G / GSM - SIM5350

• Frequency range
  - GSM-GPRS 850/900/1800/1900 MHz
  - WCDMA 900/2100 MHz
  
• Radiated power
  - Class 4 (2W EGSM900)
  - Class 1 (1W DCS1800)
  - Class (0.25 W UMTS 2100)
  
• Transmission speed:
  SIM5350L-E: 14.4 Mbit / s (downlink) and 5.76 Mbit / s (uplink)
  
• Module control
  - AT Commands (GSM 07.07, 07.05, SIMCOM)
  - USB Linux driver
  

USB Charger - BQ24295

• Programmable DC / DC
• Maximum recoil current - up to 3A

Charge Control - LTC2941

• Range from 2.7V to 5.5V
• Accuracy of charge measurement - 1%

Board size : 91x56x21
Power supply : 5V / max 2.5A (also feeds the RPI itself)

Functional diagram

Appearance and board detail

On githab is a set of software in the first approximation.
We will also post a ready-made Raspbian image, where everything is set up to work with OrPI.
Manuals and other technical issues and discussions - on our forum

We will be very happy comments, suggestions, criticism and any other reaction.

And in order not to get up twice - a few news:
- We finally became Skolkovo residents in the IT cluster!
- At Startup Village, we were on the Wearable Tech track, we didn’t reach the final, we received only a special prize from Intel - Galileo odnoplatnik and a tablet, plus a ticket to the Slush conference in Finland)
- This Saturday we will participate in FAB PICNIC in St. Petersburg, demonstrate OrPI

Thanks for attention! More or less quickly we publish news on Twitter