Photoduino’s firmware version 0.10 was released to include the ability to control a solenoid valve and automatically generate drops with Photoduino.
Solenoid valves are typically powered through 12VDC and have a high current consumption, so we need this new circuit to be connected to Photoduino’s DEVICE port so it allows the connection to a solenoid valve and a 12VDC power supply.
The control of the valve is performed by a Mosfet IRL520 logic transistor and the circuit also includes a 1N4004 diode to prevent the reverse current that is accumulated in the coil.
The board is designed in a single sided PCB so it is quite easy to make at home, but it is also available for purchase as a kit which includes a solenoid valve, a 60 ml syringe and a 12VDC battery holder.
The 12V needed to feed the solenoid valve can be supplied by the 8xAA (R6) battery holder included in the kit. You can also use a 12VDC with at least 500 mA current (not included).
Our Ladyada (Limor Fried) was nominated for Red Hat’s Women in Open Source Award! Please vote for her! Visit: https://www.redhat.com/en/about/women-in-open-source
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
Maker Business — The strange world of low-margin online returns
Wearables — Hot glue undo
Electronics — Diamonds may be forever… but components? Not so much.
Biohacking — Raspberry Pi Health Dashboard
Python for Microcontrollers — Python is for the birds, deep dive, Raspberry Pi store, and more! #Python #Adafruit #CircuitPython @circuitpython @micropython @ThePSF @Adafruit
No comments yet.
Sorry, the comment form is closed at this time.