Atorch DL24 Electronic Load Case

Atorch DL24 150W Electronic Load Case

• For the newer version that can be powered by a 5V USB-C power supply.

• The top cover can be installed without having to disassemble the heatsink with fan and re-paste the transistor - The top cover simply slides over the heatsink and snaps the clips onto the bottom cover.

• Solid bottom cover with option of M3 nuts, or M3 heat-set nuts.

• Hole in the cover for (calibration) OUTPUT cables.

Two versions of bottom cover: 

• For classic M3 nuts

• For M3 heat-set nuts (outer diameter 5 mm x height 4 mm) 

       (Both version works with 10 mm long M3 screws, half-round or countersunk head)

Recommended Print Settings: 🖨⚙

◦ Material:                PLA, PETG, ASA
◦ Nozzle diameter:  0.6 mm
◦ Layer height:        0.2 mm
◦ Perimeters:           3 (with 0.4 nozzle use 4 perimeters)
◦ Infill:                       Honeycomb at 25%
◦ Print speed:           ~ 30 mm/s
◦ Print orientation:  As in STL files
◦ Support:                No

If you choose ASA filament, you can use anti-warping triangles: 
Open triangles in the slicer, split them into single objects, and move them to the corners you need to reinforce, place them with an ~ 2 mm offset from the object and use 4 mm brim on everything. Remove them with small cutting pliers. Otherwise for Buttons, print them without brim.

⚠ If you use side outputs with fork terminals (such as the calibration OUTPUT), always connect them when the Atorch is turned OFF: Voltage on the screw + nearby metal heat sink + metal screwdriver = risk of short circuit.

Notes: 

In the comments, users Romys @Romys_3646520 and Phil @Phil_28066 wrote to me that they tested the cover on the 180 watt Atorch version and that the cover fits well on this more powerful version (you need to remove the larger heatsink with fan). Thank you to users Romys and Phil for testing and feedback! 

Regarding B+ CON+ CON- S terminals, user MaffooClock @MaffooClock in comments wrote: 
They're meant to attach an external charge controller, so you can measure capacity of a battery based on charge rather than just discharge (these would be the CDC, CDCDC, and CDxn modes):
 https://www.aliexpress.us/item/3256805349867022.html

Assembly Instructions for Heat-Set Nuts Version:

1)  First, insert 10 heat-set nuts from above into the Atorch Bottom - Heat-Set nuts cover:

2) Screw the Atorch electronic board by four M3 10mm screws to the bottom cover:

3) Insert the Buttons into the Atorch_Top cover, make sure the buttons play smoothly. If they have a elephant's foot, grind their edges:

4) Turn the Atorch upside down to attach the top cover so that the buttons (red in the picture) do not fall out:

✔ After you hear 6 clicks, you are done.