Another classic part for today, the venerable 1N4001 blocking diode. These guys can take up to 1 Amp with a drop of about a volt. We like to use them to protect 7805’s from AC/negative input voltages coming in from a power jack (as a half wave rectifier) or inductive load shunts (for motors, solenoids and relays). They’re not good for signal work, or for boost converters so much as they’re sluggish and leaky. They’re kind of the ‘big galoot’ of diodes: tough, dirt cheap and very handy, so pick some up today using our part finder!
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.
Biohacking — Vitamin-C + Gelatin for Accelerated Recovery
Python for Microcontrollers — The Top Programming Languages 2019 – Python tops the charts with a CircuitPython nod! #Python #Adafruit #CircuitPython #PythonHardware @circuitpython @micropython @ThePSF @Adafruit
Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !
can someone recommend a surface mount diode that has a very small forward voltage drop.
it’s to be used to protect the circuit from someone putting the battery in the wrong way.
i’m using a cr2450 battery and currently using 1n4001 (i think) but the drop is way to much.
the application is a simple egg timer. it contains just a pic uC a dual 2 segment led and a dual transistor plus some resistors. it’s runs constantly using the ultralow power wakeup feature of the pic.