1Bitsy 1UP handheld game console

We’re excited about this new project from Piotr Esden-Tempski of 1BitSquared on Hackaday.io:
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1Bitsy 1UP

1Bitsy 1UP is a retro inspired handheld game console, the design is based on the 1Bitsy STM32F415RGT6 ARM Cortex-M4F 168MHz 192kb RAM and 1MB Flash micro controller. 2.8″ TFT with capacitive touch, SDCard Reader and a few other components.

The display used is a TFT LCD with I2C CapTouch and ILI9341 driver. (should be compatible with the display sold by Adafruit on their breakouts as well as the buydisplay.com 2.8″ tft with CapTouch sensor)

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The most basic design consists of:

  • 1Bitsy STM32F415RGT6 (168MHz, 192kb RAM, 1MB Flash)
  • 240×320 2.8″ TFT with capacitive touch and PWM backlight control
  • D-Pad, ABXY, Start, Select buttons
  • DAC audio out to headphones. (speakers optional)
  • SDCard connected over SDIO interface

The hardware design files and firmware source code are available on GitHub:

github1bitsy/1bitsy-1up

1Bitsy 1UP handheld game console

EEEmu SPI

Blecky’s latest project on Hackaday.io is an EEPROM/Flash emulator with a fun name:

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EEEmu SPI

The EEEmu SPI emulates any Serial Peripheral Interface Bus EEPROM or Flash memory chipsets up to an interface speed of 25MHz. It also supports any supply and interface voltage between 1.8 to 5 Volts and can be configured to support even the largest of memory sizes.

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This repository contains configurations for all the currently supported EEPROM and Flash chips for the EEEmu SPI:

githubEEEmu/Supported-Devices

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EEEmu SPI

Teensy: TDM Support For Many-Channel Audio I/O

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Paul Stoffregen posted an update in his Teensy Audio Library on Hackaday.io:

TDM Support, For Many-Channel Audio I/O

Some projects need a lot of audio I/O. Maybe you’re doing positional audio sound effects (using the 8-tap delay effect) where ordinary stereo or even 5 channel “surround” isn’t enough? Maybe you’re making the ultimate Eurorack synthesizer module? Or you just want a lot of signals, because you can!

Here’s a board for the Cirrus Logic CS42448 chip, which provides 6 inputs and 8 outputs. All are high quality audio, and all work simultaneously.

PaulStoffregen has shared the board on OSH Park:

CS42448 Audio, 6 Inputs, 8 Outputs

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Order from OSH Park

Teensy: TDM Support For Many-Channel Audio I/O

Teensy 3.6 DIY Reference Board

Shared project from Teensy creator Paul Stoffregen on OSH Park:

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Teensy 3.6 DIY Reference Board

A known good reference board for testing the MKL04 chip when building a DIY Teensy 3.6. Refer to this table for the differences between Teensy 3.6 and other models. The soldering friendly LQFP package (at least more friendly than BGA) is used on this board.

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Order from OSH Park

Parts Placement Diagram

Bill Of Materials

1   MK66FX1M0VLQ18
1   IC_MKL04Z32_TQFP32
1   USB A Connector
1   USB Mini B Connector
1   Micro SD Socket
1   MCP1825S Voltage Regulator
1   TPD3S014 USB Power Switch
1   Crystal, 16 MHz
1   Crystal, 32.768 kHz
3   Diode, Schottky, B120
1   Capacitor, 100uF, 6.3V
4   Capacitor, 4.7uF
10  Capacitor, 0.1uF
1   Resistor, 100K
2   Resistor, 470
2   Resistor, 220
2   Resistor, 33
1   Pushbutton
2   Test Point, Black
Teensy 3.6 DIY Reference Board

Arduino-programmable ARM Cortex M4F Boards

Kris Winer of Pesky Products designed these easy-to-program, high-performance and low-power dev boards:

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Arduino-programmable Cortex M4F Development Boards

Program an STM32L4 Cortex M4F with the Arduino IDE via USB

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Technical specifications of the Butterfly and Ladybug STM32L4 dev boards:

  • Microcontroller: STM32L4 ARM Cortex M4F
  • Clock speed: 1, 2, 4, 8, 16, 24, 32, 48, 64, 80 MHz
  • Operating voltage: 3.3V
  •  I/O pin limits: most pins 5.0 V tolerant, 20 mA
  • Digital I/O pins: 22, with 11 PWM (Butterfly), 13, with 10 PWM (Ladybug)
  • Analog input pins: 6 (Butterfly), 5 (Ladybug), 12-bit ADC channels
  • Analog output pins: 2 12-bit DAC
  • RTC: 1 ppm accuracy
  • Flash memory: 256 KB
  • SRAM: 64 KB
  • Voltage regulator: 3.3-5.5V input / 3.3V, 150 mA output

New Butterfly and Ladybug add-on boards

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To the left is an MPU9250 accel/gyro/magnetometer motion sensor and the BME280 pressure/humidity/temperature sensor

To the right is an ESP8266 wifi-enabled add-on board for Butterfly

Ladybug environmental data logger

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Reading the BME280 and VEML6040 sensors at 0.5 Hz and outputting pressure, temperature, humidity, altitude, RGB light intensity and RTC time and date to the Sharp memory display

Simple designs make hardware customization easy

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Flight Controller:

STM32L432 receives quaternions from the EM7180, which itself is master to the motion and pressure sensors, GNSS data from the CAM M8Q, then processes and packages the data and sends it to the ESP8285 via UART bridge for transmission to a hand-held controller

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Industrial Diagnostics:

uses an STM32L433 as master to several slave sensors to detect and process signals from industrial equipment and report to a remote server via blue tooth

Arduino-programmable ARM Cortex M4F Boards

1bitsy and Black Magic Probe on embedded.fm

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Piotr Esden-Tempski and Gareth McMullin joined the embedded.fm podcast to talk about their Black Magic Probe and 1bitsy projects:

Episode 180: Chickens in Helmets

They discussed their current Kickstarter campaign:slideshow_1

Design files and source code for both projects is available on GitHub:

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In application debugger for ARM Cortex microcontrollers.

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Open Source JTAG enabled ARM development platform

You can also ask questions on Black Magic’s Gitter channel.

1bitsy and Black Magic Probe on embedded.fm