Iconic Casio F-91W watch transformed right into a smartwatch

Digital fanatics concerned with upgrading a traditional Casio wristwatch, remodeling it right into a hackable, programmable smartwatch could also be within the Sensor Watch object over on the Crowd Provide web site after initially elevating over $45,000 because of over 700 backers the distinctive smartwatch challenge is now out there to preorder with costs ranging from simply $36.

Casio smartwatch

“Sensor Watch is a bridge between eras. It takes an iconic 30-year-old design from a golden age of digital watches, and pairs it with a contemporary, highly effective microcontroller and state-of-the-art sensing capabilities. This small circuit board, lower than an inch in diameter, replaces the unique quartz motion in a Casio F-91W watch to place the capabilities of an ultra-low-power ARM Cortex M0+ microcontroller in your wrist.”

Casio smartwatch display

“Sensor Watch shouldn’t be like most good watches. It makes a unique set of engineering tradeoffs, to realize a unique set of targets:

As an alternative of a high-resolution TFT LCD, Sensor Watch repurposes the Casio F-91W’s monochrome phase LCD. This offers it an always-on show that consumes mere microamperes of energy.
By avoiding energy hungry options like Wi-Fi and Bluetooth, Sensor Watch can run for a 12 months or extra on a single 100 mAh coin cell, eliminating the necessity for frequent recharging.
The dearth of an exterior charging port, coupled with reuse of the F-91W’s famously waterproof enclosure, makes this a hackable wristwatch that may deal with depths as much as 30 meters.”

“There are others (stopwatch, pulsometer, battery voltage), however the necessary factor isn’t the apps that include Sensor Watch. The necessary factor is that Sensor Watch is open supply and simply hackable, which implies you possibly can write the apps that make sense for YOU. Would you like an astronomy face that may present you moon section and predict satellite tv for pc passes? A transit face programmed with prepare arrivals to your nearest subway station? An astrology face that may let you know if Mercury is in retrograde? These are all apps that you could possibly write for Sensor Watch.”


  • ARM Cortex M0+ microcontroller operating at as much as 32 MHz
  • 256 KB of on-chip Flash, with as much as 16 KB EEPROM emulation space
  • 32 KB of RAM with full retention in low-power standby mode
  • 32.768 kHz crystal for real-time clock performance with alarm help
  • Purple & inexperienced PWM’in a position LED backlight (crimson & blue on limited-edition boards)
  • On-board USB Micro B connector
  • Reset button with double-tap UF2 bootloader
  • 9-pin flex PCB connector for sensor boards
  • Controller for ten digit phase LCD, plus 5 indicator segments
  • Edge-plated contacts for 3 interrupt-capable buttons
  • Connection pad for piezo buzzer (requires gentle soldering)
  • Open Supply
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Supply : Crowd Provide

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