Laser on the Atomstack A5 Pro

If the spare laser on your Atomstack A5 Pro is broken, or you're just looking for more power, adding an 8.5W Endurance Laser is a great option. Since the A5 Pro is already set up for PWM control and has a similar laser form factor, the transition is simple. The 8.5W laser is especially suitable for this machine as it is very small and lightweight, allowing for fast acceleration for fast engraving. Since the A5 Pro is built so solidly, you can easily install 10W on it too if you're looking for more power. The steps will be very similar to what is shown here, just the spacing of the mounting holes will be slightly different.
https://www.atom-stack.com/products/a5-pro-40w-laser-cutting-machine-atomstack ,
To connect the PWM and ground signals to the Laserbox, we need a small adapter cable. The connector on the A5 Pro is a 3-pin JST XH 2,54mm female, so you can look for a cable that already has a male JST 2.5 connector, or you can solder it to another cable. If you can't find a cable with the connector attached and don't want to make your own, you can also plug some jumper wires into the connector and hot glue them so they don't come off.

On the Laserbox we need the black PWM input cable, the black wire is ground and the red wire is the PWM signal. You can solder cables directly to them, crimp on connectors, or use some screw terminals. While there isn't much power going through these connections, you still need to make sure the connections are good for reliable operation.
https://www.atom-stack.com/products/air-assist-system-for-atomstack-laser-engraver-pre-sale ,
If you want to use an Atomstack air assist, you can also hook it up at this point. Some good air sources are an air pump or a hobby air compressor for a spray gun. Both options should be easily available online from your local dealer.