Yaakov, That is a great value! Thank you. I use an analog station, I will get this one.The datasheet for the solder you are using will tell you the temperature you should set. It's usually specified as a small range. Sometimes a bit on the hotter side is better since it reduces heating time and get the local region hotter faster.
Tip cleaner is great, but oyu only need it if you using the bronze wool doesn't do a good enough job. I don't suggest using a sponge, if you do. It doesn't work better than the wool, it cools the tip, and some suggest it could cause the plating to deteriorate more quickly from stress fractures. I don't know the validity of the last, but it is certainly no more effective than the wool and much more hassle.
If you want to get really nerdy about it, pick up one of these. It will allow you to calibrate your iron so the displayed temperature is the actual temperature. It is a copy of the Hakko FG-100 which is ~$270.00. It's not a counterfeit since it isn't labeled Hakko, though those do exist. It will be more than good enough for the 20 bucks to get your iron in spec considering your application, and, I find it very satisfying to know my display is actually the tip temperature for all intents and purposes I could have.
As for the project you have helped me with.. her Speech therapist asked about adding an interruptor to it. I have a battery interrupt, https://www.amazon.com/Battery-Inte...B1P7600/ref=pd_lpo_4?pd_rd_i=B00B1P7600&psc=1 ( I would like to make those pigtails ! they do not look like they should cost that much, it is the 2-sided board that I don't know what it is called to search for it.)
Currently we use a (non-powered) 6" disc switch that operates the interrupt to activate devices. I am wondering if there would be a problem or feedback if I wire an interrupter in to the new tactile switch so that when the recording plays it also would activate the toy? The switch you helped me modify only records and plays back but no interface. Because this is a powered voice recording/ playback switch would the battery interrupter feedback on the tactile switch pads? I hope that makes sense. I am grateful the switch is easier to push and we can record/play on them but if I could get it to activate a light or a fan or device, I could record "light ON" and when pushed it would play that and light would come on thru battery interrupt. I do not want to power a device, it will have it's own power and the on/off switch is left ON then the interrupter operates it... at least currently. Adding a voice to the function would be very helpful in her development and enjoyment.
Do you think there would be a problem adding the interrupter? The toy/device will have battery power and the switch is powered and I do not know if that would create a series or parallel the 2 battery sources or somehow damage the circuits. Suggestions and comments welcome.
Thank you again for the help and knowledge.

