The July 2022 issue of IEEE Spectrum is here!

Close bar

A tricorder is a piece of fictional equipment* in Star Trek that’s only slightly less realistic than Doctor Who’s sonic screwdriver. A handheld device with a screen, lots of blinking LEDs, and some unspecified set of sensors, a tricorder allows you and your away team to detect alien lifesigns and subspace anomalies and whatever else is necessary to move the plot forward.

Considering how often tricorders are relied on in Star Trek, we can infer that they’re immensely useful. Peter Jansen has been developing tricorders for the last seven years, and his latest model is tiny, open source, and absolutely packed with useful (and entirely functional) sensors.

Here’s the full accounting of the suite of sensors in the current prototype:

Atmospheric Sensors

  • Ambient Temperature and Humidity: Measurement Specialties HTU21D
  • Ambient Pressure: Bosch Sensortec BMP180
  • Multi-gas sensor: SGX-Sensortech MICS-6814

Electromagnetic Sensors

  • 3-Axis Magnetometer: Honeywell HMC5883L
  • Lightning sensor: AMS AS3935
  • X-ray and Gamma Ray Detector: Radiation Watch Type 5
  • Low-resolution thermal camera: Melexis MLX90620 16×4
  • Home-built linear polarimeter: 2x TAOS TSL2561
  • Colorimeter: TAOS TCS3472
  • UV: Silicon Labs Si1145
  • Spectrometer: Hamamatsu C12666MA micro-spectrometer, with NeoPixel light source

Spatial Sensors

  • Inertial Measurement Unit: Invensense MPU-9150 9-axis (3-axis accelerometer, gyro, and magnetometer)

Other Sensors

  • Microphone: Analog Devices ADMP401

The difference between the Arducorder Mini and the tricorders competing for Qualcomm’s Tricorder XPrize is sort of like the difference (in Star Trek) between a regular tricorder, and a medical tricorder. The Arducorder Mini is a pure sensing tool, and isn’t intended to perform any diagnostics. The winner of the Tricorder XPrize, on the other hand, will need to be able to diagnose diseases by itself.

Jansen is competing for a different sort of reward: a trip to space for himself, if he wins the Hackaday Prize. But really, we all win, because of the open-source nature of the Arducorder. All of the build details are available here.

[ Tricorder Project ]

*Gene Roddenberry, the creater of Star Trek, added a clause to his contract with Paramount specifying that if anyone actually made a functioning tricorder, they’d have automatically earned the right call it a tricorder if they wanted to.

The Conversation (0)

The Future of Deep Learning Is Photonic

Computing with light could slash the energy needs of neural networks

10 min read
Image of a computer rendering.

This computer rendering depicts the pattern on a photonic chip that the author and his colleagues have devised for performing neural-network calculations using light.

Alexander Sludds

Think of the many tasks to which computers are being applied that in the not-so-distant past required human intuition. Computers routinely identify objects in images, transcribe speech, translate between languages, diagnose medical conditions, play complex games, and drive cars.

The technique that has empowered these stunning developments is called deep learning, a term that refers to mathematical models known as artificial neural networks. Deep learning is a subfield of machine learning, a branch of computer science based on fitting complex models to data.

Keep Reading ↓Show less