HT420-A Tweezers support

[nikifena]

Hi there. My name is Niki. I'm PCB and 3D designer and I have been making many /mostly analog/ projects for over 15 years.
I checked your project. It looks good. I think to modify it a little bit the board since the tracks going to the pads has no teardrops and it's better to have ticker wires around the pads.

Anyway, I have JBC TH420-A soldering tweezers and I think it's good for having an optional way to power similar tweezers.
There is already one free thermocouple input - the spare input of ADS1118. So the only one extra hardware modification will be one wire for the current sense for another VN5E010AH. Both drivers can share the same PWM.

I can modify the PCB with all new improvements but I can't modify the code. I'm a PCB designer.

What do you think about that?

Another "Extra" modification could be two inputs - one for JBC iron and another for iron/tweezers.

Thanks and waiting for your answer.

Niki

[PaulusSmallus]

If you have a look at the branch I made, there is code for tweezers. I designed it for PA120 tweezers, not 420. I have a feeling the maximum voltage is higher on the 420, so it would be worth checking it will work.
In any case, the code is there if you want it.
p.s. my PCB design is not great. my plan is do redo it.
https://github.com/PaulusSmallus/JBC-Soldering-Controller

[liuweisword]

I want do it to
can we do it together？
wei.liu@cecooleye.cn

[PaulusSmallus]

Just to update, according to this the HT420 will run off 24V, so it should work.

I just tried some PA120 tweezers and it almost works, but it needs calibrating. It seems to be a different type of thermocouple. You will need to detect the different types of irons, so you can use different calibration data.

[nikifena]

Thanks for the update!
I started with the PCB design but I'm busy with some other projects. I hope I will be ready until the end of this year.

[PaulusSmallus]

Hello liu wei,
I am sure there is something you can help with. What are you good at?

[liuweisword]

I am a chinese, everything the project need is so easy and cheap to get .
I redesign your sch by orcad. Meger the arduino in the main board .
I have a team with my friend include the software and hareware ,structure .

Can we design a product with comparable or even better performance than JBC?

[PaulusSmallus]

According to this licence, you can use this for commercial purposes as long as you include the same licence agreement.