I am very happy to share that TinyDelay is completed. With a kit price of $13.65 plus shipping this is a fun ATTiny85 based kit. The code uses an interrupt on the input pin to initiate an “on cycle”. As with all Nanohawk products it can easily be modified for other applications. The input pin header is connected to ADC2 on the ATTiny to facilitate use with sensors. The board also features a 6 pin ISP header for easy programming. Power is supplied via the durable and common USB-B jack. The relay is over-rated 10A@250V and a PCB design capacity of 4A @120V which should ensure a very long application life. For applications where direct control of AC current is being used the contact side of the relay has a resistor and capacitor filter.
The kit is available through Tindie.com, more details available here
I received word yesterday and today that the next few prototype boards are headed my way from the great folks at OSHPark. The products headed in are TinyDelay, TinyPLC Solo, and TinyTimer Kickstarter.
TinyDelay is an input sensing delay timer. Push a button and it turns on (or off) a relay for a set period of time. It’s a new product that is aimed at specific applications like exit gates or lights. Kit price will be approximately $13.50
TinyPLC Solo is a single channel Arduino compatible PLC. It has a single analog input and a single output channel. It can handle whatever logic you program into the 32k of RAM. Arduino IDE is convenient and easy to use. Kit price should be around $20.
TinyTimer Kickstarter is TinyPLC with an LED Interface and buttons for field programming. It makes it easy to program run time and total cycle length for non-hackers. Kit price is about $50. The big leap in cost is due to the cost of the additional PCB space, LED Driver chip, and LEDs. The LED Driver chip alone adds $10 to the parts cost.