How to Make Chase Lights with a Decade Counter -- The Learning Circuit 74

Matt — Wed, 25 Mar 2020 08:24:00 GMT

Current Revision posted to Documents by Matt on 3/25/2020 8:24:00 AM

How to Make Chase Lights with a Decade Counter

The Learning Circuit | element14 presents | Project Videos

www.youtube.com/watch

Karen is making a robot with lots of flashing lights. But the Arduino she’s using to control the circuit has limited I/O. After learning about 555 timers and decade counters, Karen discovered that she can combine them to animate the lights in her robot reducing the outputs needed on the Arduino from ten, down to one. Decade Counters use a clock signal to cascade a high output signal across 10 outputs. Karen shows how to make an astable oscillator circuit with a 555 timer to create the clock signal needed for the decade counter. Then shows how to set up a circuit with 10 LEDs, one for each output. She also shows how to use transistors and relays for applications that require a higher current draw.

Bill of Material:

Product Name	Manufacturer	Quantity	Buy KitBuy Kit
74HC4017E -Decade Counter / Divider, 2 V to 6 V, DIP-16	TEXAS INSTRUMENTS	1	Buy NowBuy Now
CD4026BE -Decade Counter / Divider, 16 MHz, 3 V to 18 V, DIP-16	TEXAS INSTRUMENTS	1	Buy NowBuy Now
CD74HC4017E -Decade Counter / Divider, HC Family, 60 MHz, 2 V to 6 V, DIP-16	TEXAS INSTRUMENTS	1	Buy NowBuy Now
CD4022BE -Decade Counter / Divider, 11 MHz, 3 V to 18 V, DIP-16	TEXAS INSTRUMENTS	1	Buy NowBuy Now
CD74HCT390ECD74HCT390E - Decade Ripple Counter, HCT Family, 27 MHz, 4 Circuits, 4.5 V to 5.5 V, DIP-16	TEXAS INSTRUMENTS	1	Buy NowBuy Now

Tags: clock signal, e14presents_makerkaren, clock pulse, oscillator, the learning circuit, 555 timer, astable, decade counter, timer circuit

The Learning Circuit 74: How to Make Chase Lights with a Decade Counter

tariq.ahmad — Wed, 26 Aug 2020 15:24:14 GMT

Revision 1 posted to Documents by tariq.ahmad on 8/26/2020 3:24:14 PM

How to Make Chase Lights with a Decade Counter

The Learning Circuit | element14 presents | Project Videos

www.youtube.com/watch

Bill of Material:

Product Name	Manufacturer	Quantity	Buy KitBuy Kit
74HC4017E -Decade Counter / Divider, 2 V to 6 V, DIP-16	TEXAS INSTRUMENTS	1	Buy NowBuy Now
CD4026BE -Decade Counter / Divider, 16 MHz, 3 V to 18 V, DIP-16	TEXAS INSTRUMENTS	1	Buy NowBuy Now
CD74HC4017E -Decade Counter / Divider, HC Family, 60 MHz, 2 V to 6 V, DIP-16	TEXAS INSTRUMENTS	1	Buy NowBuy Now
CD4022BE -Decade Counter / Divider, 11 MHz, 3 V to 18 V, DIP-16	TEXAS INSTRUMENTS	1	Buy NowBuy Now
CD74HCT390ECD74HCT390E - Decade Ripple Counter, HCT Family, 27 MHz, 4 Circuits, 4.5 V to 5.5 V, DIP-16	TEXAS INSTRUMENTS	1	Buy NowBuy Now

Tags: clock signal, e14presents_makerkaren, clock pulse, oscillator, the learning circuit, 555 timer, astable, decade counter, timer circuit