Turtle robot that uses an Adafruit Trinket Pro as MCU. BOM & instructions at https://github.com/aspro648/OSTR

Description

Simple breakout board to convert logic-level signals to CAN bus. The MCP2562 is nothing but a fancy level shifter and must be used with a CAN bus controller, such as a Microchip MCP2515.

This board fits in a breadboard!

The left-side pins are the same as the CAN bus header on the LPCXpresso11C24 dev board.

Designed in EagleCAD.

Pins

Right side:

• TX: data out from CAN bus
• RX: data into CAN bus
• GND: ground (same as left side)
• +5V: powers chip (same as left side)
• VIO: interface voltage reference
• STBY: place the MCP2562 into low-power state

Left side:

• CANH: high-voltage side of CAN bus (usually 2.5-5V logic)
• CANL: low-voltage side of CAN bus (usually 0-2.5V logic)
• GND: ground (same as right side)
• +5V: transceiver power rail (same as right side)
• STBY: place the MCP2562 into low-power state

BOM

• U1: Microchip MCP2562SN
• C1, C2: 0.1µF 0603 ceramic capacitor
• R1: 120Ω 0603 resistor

Description

Simple breakout board for Honeywell’s MPR line of pressure sensors, which use a Wheatstone bridge and an optional 1nF filter capacitor.

This board has 0.5" pin row spacing such that it fits in a standard breadboard.

Designed in EagleCAD.

Pins

Right side:

• RST: reset, active-low
• EOC: end of conversion, data is available, active-high
• GND: ground
• +3.3V: VDD (note: device has no reverse-polarity protection and very little over-voltage protection)

Left side:

• MISO: master-in-slave-out for SPI
• SCL/SCK: clock input for SPI and I2C
• MOSI/SDA: data input for SPI, data I/O for I2C
• CS: chip select for SPI

BOM

• top footprint: any Honeywell MPR device
• 100nF: any 100nF 0603 capacitor
• 1nF: any 1nF 0603 capacitor

rev -

P82B715TD i2c Extender with pads to solder a MM8451 Accelerometer directly to the board or through 4 pin 3.5mm connector

USGS Sensor Board v1.1

Find more details and the hardware design files at https://github.com/kinx-project/hub-hw

Find more details about the project at https://michael.stapelberg.de/posts/2018-04-17-kinx/

Find more details and the hardware design files at https://github.com/kinx-project/mk66f-hw

Find more details about the project at https://michael.stapelberg.de/posts/2018-04-17-kinx/

Simple interface to run my Anet A8 using ESP3D and an ESP-01 module. A TTL gate keeps startup serial data out of the printer. Requires removing 2 zero ohm resistors and installing a 6 pin header on the Anet controller in the BLE/USB position. You will also need to add code to the ESP3D sketch’s setup() function to set GPIO 0 as an output and write a logic LOW to that pin in order to enable transmit data to go out of the ESP-01 to the printer. This board should plug in to the connector next to the LCD connector. Power should be taken from the 12v board power (or a separate wall-wart might be used). Given the various problems an Anet A8 has, I didn’t want to stress its on-board voltage regulators with an ESP8266. This is revision 2 of this board, which uses a Recom R78E3.3-1.0 switching regulator. I also brought out GPIO2 to a header so the reset functionality of ESP3D can be used.

Schematic and board files (Eagle 7.x format) are at https://github.com/telanoc/anet_esp3d_board

https://github.com/satri360/vmuzero_seps525/tree/vmuzero_keyonly

board designed by satri360 from the sudomod.com forums

Article

Raspberry Pi Zero Power Supply HAT

Features:

• Input voltage: 9V - 24V DC
• Photo-resistor based light sensor
• One high current (5V 2A) output

BOM:

Replaced two lumileds with 0805 IR leds (850 nm and 940 nm), added pullups to master I2C bus.

Interfase II para Spectrum 48K con puerto Joystick.

Optimiza el conector de Kempston del ZX Nuvo 128 de Superfo