20 Apr '17, 6pm

Hackaday Prize Entry: DIY ARM Scientific Calculator

[Ramón] started off with Arduino but upgraded initially to Freescale’s Freedom KL25Z development board upgraded to an ARM Cortex-M0+ programmed using mbed. The display is an Electronic Assembly DOGL-128 128×64 pixel LCD. [Ramón] did a couple of iterations on the PCB, going from a large DIY one in order for the Arduino version to work, to the current, smaller version for the ARM chip with hand soldered SMD components. After that, [Ramón] looked into the algorithms needed to parse mathematical input. He settled on the shunting-yard algorithm, which converts the input into Reverse Polish Notation (RPN), which is easier for the software to work with.

Full article: http://hackaday.com/2017/04/20/hackaday-prize-entry-diy-a...

Tweets

Hackaday Prize Entry: Portable LED Flash For Ph...

hackaday.com 21 Apr '17, 6pm

By this point in time, you might be familiar with LEDs as flash units from your cellphone. However, [Yann] is taking this ...

E-ink Display Driven DIY

E-ink Display Driven DIY

hackaday.com 20 Apr '17, 11am

E-ink displays are awesome. Humans spent centuries reading non-backlit devices, and frankly it’s a lot easier on the eyes....

Hackaday Prize Entry: GoKart Tank

hackaday.com 18 Apr '17, 6pm

There is probably something in all of us that yearns to drive a tank, just once. Most of us will probably never fulfill it...

Hackaday Prize Entry: Hot Logic

hackaday.com 15 Apr '17, 8pm

A few weeks ago, [Yann] was dumpster diving and found something of interest. Two vacuum tubes, an ECC83S and an EL84. This...

Hackaday Prize Entry: Memes

hackaday.com 23 Apr '17, 8pm

Snap, Inc., the company behind Snapchat, is branding itself as a hardware company. What hardware does Snap make? Spectacle...

Hackaday Prize Entry: A Complete Suite Of Biomedical Sensors

Hackaday Prize Entry: A Complete Suite Of Biome...

hackaday.com 22 Apr '17, 8pm

More of an enabling platform than a complete project, [Orlando Hoilett]’s shield design incorporates a lot of the sensors ...

A Robot Arm With The Tender Grip Of An Octopus

hackaday.com 19 Apr '17, 11pm

If you’ve ever experimented with a robot gripper, you’ll know that while it is easy to make an analogue of the human abili...

Go Wireless with This DIY Laser Ethernet Link

hackaday.com 20 Apr '17, 5am

Most of us have Ethernet in our homes today. The real backbones of the Internet though, use no wires at all. Optical fiber...

Go Wireless with This DIY Laser Ethernet Link

hackaday.com 20 Apr '17, 5am

Most of us have Ethernet in our homes today. The real backbones of the Internet though, use no wires at all. Optical fiber...

Hackaday Prize Entry: An Automated Still

hackaday.com 27 Apr '17, 6pm

We’ve seen plenty of Arduinofied home brewing setups, and kegerators are a fairly standard project for the types of people...

Hackaday Prize Entry: Wearable Micro Pump Treats Your Fever for You

Hackaday Prize Entry: Wearable Micro Pump Treat...

hackaday.com 16 Apr '17, 8pm

His chosen initial therapeutic area is fever, given that it’s easy to diagnose non-invasively with a simple thermistor and...

Hackaday Prize Entry: A Double Action Keyboard

hackaday.com 28 Apr '17, 6pm

“It’s an idea similar to what’s found in touch-sensitive MIDI controllers or the other type of keyboard. The difference he...

Hackaday Prize Entry: Real Hard Drives In The R...

hackaday.com 12 Apr '17, 6pm

‘Boy, I wish the Raspberry Pi had a SATA port’. This is the plea that echoes through the Internet, and for once, the Inter...

Hackaday Prize Entry: Zappotron Super Sequencer

hackaday.com 13 Apr '17, 6pm

If you fancy a go at circuit bending, where do you start? Perhaps you find a discarded musical toy at a junk sale and have...

Hackaday Prize Entry: Experiments with Wheeled ...

hackaday.com 11 Apr '17, 11pm

If you’ve been keeping tabs on recent developments in robotics, you surely remember Handle — the awesome walking, wheeled ...