ThomsCircuit
Member
The problem I'm having is I think I can somehow attach the timer to the fan circuit in a fashion that the completion of pin 16 would start the timer but I dont see a way to properly trigger the timer with pin 16.
Here is a "delay off timer" circuit that should work (I didn't breadboard it yet).Yes. Absolutely
I am simply amazed. I am going to try to figure out how you did this. My parts just came in and I managed to put this voltage reducer together. I will make 3 of these for the three boxes I made that will house the circuit boards. Seven for 2 boxes and 3 for this smaller one. The fan, meter, and speaker will be mounted on these.Here is a "delay off timer"
Yes. It makes the circuit simpler. The relay is the same as the original 5v relay.To clarify. The relay is now a 5v and not 12v
I'll type a circuit description below the schematic in post #222I am simply amazed. I am going to try to figure out how you did this. My parts just came in and I managed to put this voltage reducer together. I will make 3 of
Nice..these for the three boxes I made that will house the circuit boards. Seven for 2 boxes and 3 for this smaller one. The fan, meter, and speaker will be mounted on these.
Thank you very much.I'll type a circuit description below
I've got to say, that seems a bit of an OTT way of doing that?I've bread boarded and tested the "delay off timer" circuit in post #222.
It works as intended.
Thank you RJ. ETech has helped me so much throughout this project. Im greatfull for his input. I will I'll be testing both of these out later today.How about just a 555 monostable setup,
Thank you for the explanation. It makes perfect sense. I'm going to study this until I learn something new.How it works....
If pin 1 is the emitter, yes they both connect to +5.Thank you for the explanation. It makes perfect sense. I'm going to study this until I learn something new.
Q: Q1&Q2 are facing different directions on the schematic. To me they appear to to be flipped for clarity and have nothing to do with how they are connected. Pin 1 on both Q1&Q2 go to +5.
Thank you. This is exceptional.Here is a schematic using rjenkingb suggestion.
The design tested good and I made this one today. Im so slow. It took 90 minutes. I also used a tiny amount of glue to hold the jacks and pins into place so they were straight after solderedHere is a schematic using rjenkingb suggestion.
Nice.My my. I do enjoy this. I just finished, tested, and debuged a completed circuit. Im getting better at wiring while looking at the schematic. I no longer need to have a reversed image to look at. I really need to figure out this pcb design tool. I have a few more to make. It takes me a day to do one.
I do have 2 issues. It beeps when on but no beep when in off state and there is a slight delay when it turns on. Like 1 second. I looked over the board and checked wiring but I just don't see anything so perhaps the observation may help in pointing me in the right direction. I will keep at it in the meantime. Here are some pics.
I was thinking that after i do one the rest would be easier. Nope. Its a spaghetti mess.Please post your current schematic so we can review.
Good choice. I use DesignSpark for all my designs as well and have been using it for a few years. I can help with questionsI was thinking that after i do one the rest would be easier. Nope. Its a spaghetti mess.
I want to make a PCB and have 20 printed. My initial problem is errors in the schematic. I can post whatever you may think may help. Im using Design Spark 9.0
My current hurdle.have all parts you need in the part library first.