LoFive RISC-V board now on GroupGets

LoFive RISC-V dev board designed by Michael Welling with KiCad is now on GroupGets:

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LoFive is a small board based on the SiFive Freedom E310 open source SoC

LoFive_LED

Specifications

  • MCU – SiFive Freedom E310 (FE310) 32-bit RV32IMAC processor @ up to 320+ MHz (1.61 DMIPS/MHz)
  • Storage – 128-Mbit SPI flash (ISSI IS25LP128)
  • Expansion – 2x 14-pin headers with JTAG, GPIO, PWM, SPI, UART, 5V, 3.3V and GND
  • Misc – 1x reset button, 16 MHz crystal
  • Power Supply – 5V via pin 1 on header; Operating Voltage: 3.3 V and 1.8 V
  • Dimensions – 38 x 18 mm (estimated)
  • License – CERN Open Hardware Licence v1.2

LoFive-Schematics-600px

The design files are available on GitHub:

mwelling/lofive

LoFive RISC-V board now on GroupGets

EasyPWR

From mcu_nerd on Hackaday.io:

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EasyPWR

A small, easy to assemble board that makes use of old wall warts.

 

Like many of us, I had a bunch of various wall-warts lying around, but sadly though none of them produced a regulated 5V/3.3V. I had some 78xx regulators around, so I went into KiCad and made a board to make those wall-warts useful! Changing the world by saving old wall warts from the dumpster!

EasyPWR

Building a PCB lapel

JinGen Lim created this beautiful project:

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Building a PCB lapel

I had little experience with fabric, but building a lapel out of PCB seemed like something that might just work. PCBs are typically built with extremely high tolerances for its copper and mask layers and still acceptably accurate for the silkscreen.

 

Building a PCB lapel

KiCad footprint for Nokia 5110 LCD

Sven Gregori on Hackaday.io created a KiCad component and footprint for the Nokia 5110 LCD and created this breakout board to test it:8695331498520943537

Yet another Nokia 5110 LCD breakout board

I just shamelessly measured all there was to measure and created my own KiCad PCB footprint, along with a schematic component.

Once done, I needed a way to verify it would actually work and fit the LCD, so despite how pointless it is, I created my own breakout board as proof of concept and ordered it from OSH Park.

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The Nokia 5110/3310 LCD component and footprint are available on GitHub:

Screenshot from 2017-06-10 14-39-57

sgreg has shared the breakout board on OSH Park:

Nokia 5110 LCD Breakout Board Rev.A

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Order from OSH Park

KiCad footprint for Nokia 5110 LCD

Internet of Fidget Spinners

writes on Hackaday:

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Hackaday Prize Entry: Internet of Fidget Spinners

Last week, everyone on Hackaday.io was busy getting their four project logs and illustrations ready for the last call in this round of the Hackaday Prize. These projects are the best of what the Internet of Things has to offer because this is the Internet of Useful things [..]

This is a PoV fidget spinner, which means the leading edges of this tricorn spinner are bedazzled with APA102 LEDs. Persistence-of-vision toys are as old as Hackaday, and the entire idea of a fidget spinner is to spin, so this at least makes sense.

Find out more on the Hackaday.io project page by Matthias:

 

IoT POV Fidget Spinner

A WiFi fidget spinner, taken from concept to ordering parts in one weekend

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The KiCad design files are available on GitHub:

githubm-byte/fidget-pov

Screenshot from 2017-06-10 14-39-57

matthias has shared the board on OSH Park:

IoT POV Fidget Spinner (192a97b)

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Order from OSH Park

Internet of Fidget Spinners

Design a Raspberry Pi add-on board with KiCad

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Learn how to design a simple add-on board for Raspberry Pi with KiCad in 20 minutes with this new tutorial from Chris Gammell of Contextual Electronics:

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Shine On You Crazy KiCad

This course shows how to make a custom but very simple piece of electronics for the Raspberry Pi platform. The primary purpose is to get users building something in KiCad as fast as possible.

Shine on, you crazy KiCad

A post shared by Chris Gammell (@chrisgammell) on

The free course contains four videos:

Designing a PCB in KiCad in 20 minutes

Buying Components

Assembling a simple circuit board with SMD components

Writing code, blinking an LED with a Raspberry Pi

ChrisGammell has shared the board on OSH Park:

Shine

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Order from OSH Park

Design a Raspberry Pi add-on board with KiCad