Raspberry Pi add-on teaches Node-RED I/O programming

On Kickstarter: Sequent has launched a $50 “Raspberry Pi I/O Studying Package” with an STM MCU, 4x opto-isolated inputs, 2x relays, RS485, PWM output, energy I/Os, and a Node-RED studying tutorial.

Sequent Microsystems, which focuses on Raspberry Pi add-on boards for I/O controls, comparable to its 16-Inputs for Raspberry Pi HAT, has now spun one other Pi add-on aimed toward instructing embedded I/O ideas utilizing Node-RED, full with downloadable tutorials. The corporate has already gained Kickstarter funding for the $50 Raspberry Pi I/O Studying Package, which ships in January.



Raspberry Pi I/O Studying Package with (left) and with out the Raspberry Pi
(click on pictures to enlarge)

The Raspberry Pi I/O Studying Package is supplied with a 32-bit STM microcontroller, an RS485 serial port transceiver, and a PWM output able to driving a 5VDC/100mA motor. Different options embody 4x optically remoted contact closure inputs and 2x relays that may drive 8A and 24V masses with LED standing. You additionally get a 0-10V enter and output and a 4-20mA present loop enter and output, a pushbutton, and 4x programmable LEDs.

The I/O board is powered by a BYO Raspberry Pi through GPIO. It requires 5V/50mA to function with the relays off or 200mA with each relays on. The equipment consists of 2x 2-pin plugs for the RS485 and PWM-driven micromotor, 8x 3-pin plugs for the I/Os, a self-test loopback cable, and brass standoffs, screws, and nuts.



Raspberry Pi I/O Studying Package block diagram (left) and element view
(click on pictures to enlarge)

The KS web page mentions an non-compulsory add-on equipment that isn't included among the many commonplace packages. You may add the $25 equipment on the finish of your pledge. The equipment provides an on/off swap, thermistor, photoresistor, potentiometer, RS485 temperature and humidity sensor, and a micromotor.

Sequent has already posted a hyperlink to the primary three chapters of the 12-chapter Node-RED tutorial. The tutorials present how you can use the Node-RED visible I/O programming surroundings to manage every of the interfaces of the Studying Package. Examples vary from constructing easy flows utilizing the pushbuttons and LEDs to controlling gadgets over the Web.

We requested Sequent Microsystems founder Mihai Beffa if the current flurry of product bulletins after a significant slowdown over the summer season meant we may be coming to the tip of the chip scarcity. “All indicators are that the tip of the scarcity is nowhere close to in sight,” answered Beffa, noting {that a} easy TI TCA9535PWR I/O expander that bought for $0.50 earlier this 12 months now sells for $5. Nonetheless, Sequent has already secured the chips it wants for a minimum of 1,000 items.

 
Additional data

The Raspberry Pi I/O Studying Package is offered on Kickstarter by way of Nov. 26 for $50, with quantity reductions. Shipments are anticipated in January. Extra data could also be discovered on the Kickstarter page, and extra ought to ultimately seem on the Sequent Microsystems website.
 



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