Tiny SCSI Emulator

David Kuder designed a SCSI device emulator with a Teensy 3.5 & NCR 5380:


Tiny SCSI Emulator

SCSI target emulator based on the Teensy 3.5 (Kinetis MK64FX MCU) and classic NCR 5380 SCSI PHY. Supports multiple targets (Device IDs), LUNs, and device types. 3.2″ x 1.6″ footprint, optionally uses or provides bus termination power. 64×48 pixel OLED status display.


The design files and source code are available on BitBucket:

screenshot-at-2017-01-09-20-07-15 tinyscsiemulator

Tiny SCSI Emulator

Ethernet PHY for Teensy 3.5 and 3.6


Paul Stoffregen of PJRC designed this shield as a Kickstarter reward earlier this year:

Ethernet Shield for Teensy 3.5 and 3.6

Please understand this shield has very limited software support at this time. However, Manitou’s early benchmarks show excellent performance we can someday hope to achieve as the software matures.

PaulStoffregen has shared the board on OSH Park:


Order from OSH Park

The source code is available on GitHub:

images PaulStoffregen/k66_ethernet



Bill of Materials:

Qty  Part                               Digikey
---  ----                               -------
1    LAN8720A                           LAN8720A-CP-CT-ND
1    CAT811T                            CAT811TTBI-GT3OSCT-ND
1    Crystal, 25 MHz                    535-13419-1-ND
1    Transformer, Pulse H1102FNL        553-2204-1-ND
1    Connector, RJ45                    A102068CT-ND
1    Capacitor, 1nF, 2000V              709-1036-1-ND
2    Capacitor, 33pF                    490-5936-1-ND
1    Capacitor, 470pF                   490-1297-1-ND
3    Capacitor, 10nF                    445-1260-1-ND
1    Capacitor, 22nF                    490-8022-1-ND
3    Capacitor, 1uF                     399-5090-1-ND
1    Resistor, 33, 1%                   311-33.0LRCT-ND
4    Resistor, 49.9, 1%                 RMCF0402FT49R9CT-ND
4    Resistor, 75, 1%                   RHM75.0HCT-ND
2    Resistor, 330, 1%                  311-330LRCT-ND
1    Resistor, 1.5K, 1%                 311-1.50KLRCT-ND
2    Resistor, 12.1K, 1%                P12.1KLCT-ND
1    Inductor, Ferrite bead             553-2387-1-ND
2    LED, Green                         475-1410-1-ND
Ethernet PHY for Teensy 3.5 and 3.6

Wi-Fi Connected IoT Thing

Charles McClelland created a Wi-Fi Connected Teensy Data Logger with GPS and Accelerometer:

Wi-Fi Connected IOT Thing

The basic idea is that this board will connect to GPS, obtain a GPS fix and report its location to Ubidots.


Ubidots can then display this information in a number of ways including showing the location and the number of times the sensor had been moved that day


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

github chipmc/Teensy-Data-Logger/


Wi-Fi Connected IoT Thing

Teensy to Arduino adapter board

OSH Park engineer Dan Sheadel created this board to break out Teensy 3.x into a form factor suitable for small electronics prototyping:

Screenshot from 2016-09-29 02-24-20.png

  • Adapts Teensy pinout to Arduino shield, so existing shields can be fit to a Teensy
  • Adds LiPo battery monitoring and charging capability
  • Adds three wire pinouts for all pins
  • All PWM outputs have an LED
  • All PWM outputs connect to 3 wire servo headers that supply input or battery voltage for use with servos or motor controllers
  • Contains small Stormy logo on back since the Stormbots were the inspiration for this board’s existence



Due to the nature of the breakout, many components can be omitted depending on the needed sections.


Part Quantity Description Part Number
Teensy 1 Teensy Microcontroller OSH Park or Adafruit or
PCB 1 Bare PCB OSH Park
LED 11 0603 or 0805 LED any
1uF cap 2 0603 or 0805 cap any
0.1uF cap 4 0603 or 0805 LED any
10uF cap 2 0603 or 0805 cap any
LiPO Battery 4 Any with JST connector Adafruit
JST Battery Connector 4 JST-PH-2-THM-RA
MCP73871 2 LiPO Battery Management IC MCP73871
MCP1703 2 3.3V voltage regulator MCP1703
Large (100uF+ cap) 2 0603 or larger any

Pin Connections

The various use cases may or may not require some or all of these pins. Here’s the most you can solder to the board in the simplest orientation

Most of these can be swapped, omitted, or assembled with small 1×3 connectors or whatever you have on hand. Otherwise, they can be purchased at Digikey or Adafruit

Part Quantity Description
Arduino Sockets 2 0.1″ 1×8 F socket
Arduino Sockets 2 0.1″ 1×6 F socket
3 wire output headers 2 0.1″ 3×8 M Angle Pins
3 wire output headers 1 0.1″ 3×6 M Angle Pins
Servo output headers 2 0.1″ 3×3 M 90 degree Pins
Servo output headers 1 0.1″ 3×4 M 90 degree Pins
Teensy to Arduino adapter board

Teensy Mitutoyo Interface

The design files and source code are available on GitHub:



CatherineH shared the board on OSH Park:

Teensy Mitutoyo Interface


Order from OSH Park

Teensy Mitutoyo Interface

Teensy WiFi Weather Logger


Teensy-based weather badge that logs humidity and temperature to Adafruit.io via WiFi:

Teensy WiFi Weather Logger

4918510884f437e052029ea54630438a (1).png

Order from OSH Park

Bill of Materials:




The Kicad design files and Arduino source code are hosted on GitHub:

github teensy-wifi-weather-logger


The sensor data is logged to Adafruit.io via ESP8266’s WiFi connection:

Adafruit.io Dashboard

Screenshot from 2016-09-04 00-53-23

Adafruit.io feeds:

Video of establishing WiFi connection and logging weather data:

Teensy WiFi Weather Logger

LiDAR Rangefinder Teensy Hat

OSH Park engineer Jenner Hanni posted on Wickerbox Electronics about his LiDAR project for the Teensy 3.2:

lcdlidarsd-frontview (1)

LCD-LiDAR-SD Teensy Hat

Teensy 3.2 daughter board to display the results of a LiDAR-Lite rangefinder on an LCD screen, with three buttons, two LEDs, and a micro-SD card for datalogging.


The KiCad hardware design files and Arduino source code are hosted on GitHub:



Jenner has shared his board on OSH Park:

LCD-LiDAR-SD Teensy Hat v1.0

Order from OSH Park

LiDAR Rangefinder Teensy Hat