Breadboard friendly breakout board for the LPC824 TSSOP20, see project page for more details.

This is the DIN connector part of the 1088XLD embedded MIDI system, or the XEL-MIDI 1088XEL plug-in expansion board. It provides a buffered opto-isolated interface to external MIDI devices, and allows for auto or manual switching of internal Dream Blaster S2 Synthesizer board source from MIDI-IN to MIDI-OUT, as well as allows it to be deselected in favor of an external synthesizer.

https://github.com/hallard/Mini-LoRa

Please see full description here: https://www.openhardware.io/view/449/DIP-to-SMD-NRF24L01-adapter#tabs-instructions

Grbl CNC Firmware on ESP32 by Barton Dring

Do the guy a favor and buy one on Tindie

Woot! He has been working on this for months. He is happy to announce that it is finally working right. The ESP32 will be a great option for CNC. Here are some things he is excited about.

1. Fast – Two 32 bit Cores at 240MHz Each, FPU, 80MHz Timers
2. Memory – Tons of Flash and RAM
3. Low Cost – $3-$10 depending how you buy it.
4. Small Size – Not much bigger than an Arduino Nano
5. I/O – It has about the same number of pins as an Arduino UNO, which is the target for Grbl
6. BlueTooth and WiFi – This is great and actually the primary reason for his port.

Full complete controller board w/ drivers and 32bit processing for CNC thru wireless or bluetooth with its own WebUI

His build page with BOM and other info

Click image to play…

Click image to play…

Do the guy a favor and buy one on Tindie

A simple way to use the grbl-Mega software with a Mostly Printed CNC (MPCNC). The dual motors on X and Y need to spin in opposite directions. Rather than hack up the grbl software to allow E0 and E1 to be used as secondary X and Y axes on a RAMPS, this board can be plugged into the X and Y positions along with a pair of drivers.
R1 = 1k. R2 =10k. Q1 = MMBT3904. For each board you need two eight-pin Arduino shield style headers (male and female together). Two eight-pin female headers for your 2nd stepper driver, and a pair of four-pin headers to connect your motors to.

Ohmic sensor for plasma thc

IV-3a VFD Breakout v1.2

If you for development purposes (or such) need to connect two devices with host connectors together (where one is actually OTG and forced to be a device), this does it relatively cleanly (with two normal USB micro cables) and without connecting the 5V lines together.

(5V is provided on a solder pad in case you do need to touch it.)

Source: https://urjaman.ddns.net/gitweb/?p=usbgcnp.git

BOM: Two micro-b connectors…

Moon Germs Synth: Breakout for Teensy 3.2 www.moon-germs.com

Assembly Instructions: https://thefirebrandforge.com/lightsaber/graflex-hilt-assembly/