want to make my own flasher circuit to replace 154C

Hi I would check with gunrunner John on this forum he sells all kinds of different electronic circuits for many different controls and dcs etc! hope this all helps you out there easy to build circuits!

https://www.youtube.com/watch?v=VMXOj8cgv98

https://www.build-electronic-c...ts.com/jk-flip-flop/

https://www.aliexpress.us/item...;utm_term=electronic circuit learning kit&msclkid=5ce3957241bf1e0ce1e9f2aa0e92415d&gatewayAdapt=glo2usa

check this out !

Alan

@Alan Mancus posted:

Hi I would check with gunrunner John on this forum he sells all kinds of different electronic circuits for many different controls and dcs etc! hope this all helps you out there easy to build circuits!

https://www.youtube.com/watch?v=VMXOj8cgv98

https://www.build-electronic-c...ts.com/jk-flip-flop/

https://www.aliexpress.us/item...;utm_term=electronic circuit learning kit&msclkid=5ce3957241bf1e0ce1e9f2aa0e92415d&gatewayAdapt=glo2usa

check this out !

Alan

Thanks - lots of good info.  @gunrunnerjohn sells a product through Henning's, but I'm trying to do a home brew.  And although John deserves a fair return on his idea and labor, the circuit costs almost double what the typical 154 signal costs, and I'm a cheapskate.

In case anyone else is interested, the video you linked is the overview.  It took a little more digging than it should have, but the details for that circuit are here:  https://www.youtube.com/watch?v=2UcorAC1MCU

Interestingly, when I viewed your post it only had the Youtube link, but when I quoted it, a couple of additional links appeared.  (I think you edited it while I was replying)

@JohnGaltLine posted:

The "Go to" device for crossing flashers for quite some time has been the LM555 timer.  This is a simple 8 pin integrated circuit chip, and is cheap and fairly easy to use.  The output of this timer chip can then be connected to transistors or relays to deliver the needed current to drive lightbulbs.  

Here is a basic circuit using LED lights:

You're looking at less than a dollar in parts here if you buy through online suppliers.

@ADCX Rob posted:

In that diagram, am I correct to assume that the purpose of the resistors next to each LED is to limit the current to the voltage they require?  If so, can the circuit power incandescent bulbs if those resistors are removed?

Rod Stewart posted 2 crossing flasher circuits including diagram, parts lists, and Gerber files so you can order your own boards here.

I have built the first version and it works well. Cost is below $2/circuit with components ordered from China (eBay vendors).

Bob