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Description
Price: $29.99 - $6.99
(as of Jan 16, 2025 09:39:58 UTC – Details)
Product Name: CD4017+NE555 Simple SMD Flowing Water Lamp Kit
Parameters:
Product size: 59mm * 48mm
Plate thickness: 1.6mm
Working voltage: DC3-12V
Plate material: RF-4 plate, all solder pads are tin plated, high-strength fireproof and fall resistant material, and can be repeatedly disassembled
The front side of the PCB board is a functional area for welding, and the back side is a practice welding area
The circuit design is reasonable, and conventional chip mounting components are used
After all components on the front are welded, power on to test the welding effect
Number of elements: 102
Number of solder joints: 264
Solder dosage: about 35cm
The product is a loose part with a circuit board: the PCB circuit board is equipped with all components, and you need to assemble and debug it yourself
The welding practice board for SMD components adopts double-sided components, and the double-sided SMD practice has a high board occupancy rate and good cost performance
The circular circuit in the middle is a water lamp circuit, composed of CD4017, NE555, and light-emitting diodes. It can work after being powered on after welding without any errors
The PCB circuit design is reasonable, without burrs, and is small in size, which can be packed in a pocket
Three columns of components on the left and right are used for welding practice, and each column has test points
Practically SpeakingJanuary 16, 2025
Challenging SMD (in a good way)
This is a great practice kit at the right price (when I purchased). A simple circuit â easy to troubleshoot so you can focus on technique â with all sizes of SMD devices in it. Note that “all sizes” means the components range from small to really, really small. Don’t try this without a magnifier or microscope!
biwei zhangJanuary 16, 2025
2Pcs SMT SMD Component Welding Practice Board Rectifiers CD4017 NE555
good
RLE361January 16, 2025
Good for smd solder practice
Went together perfectly and looks cool just make sure not to drop any on the floor especially the 402 smds and have a multimeter next to u 10/10
JGJanuary 16, 2025
Incorrect component count
Both sets were missing a few components.Edit:I’ve changed my review from 3 stars to 4. The seller very quickly offered me a full refund which I appreciated very much. I will try them again in the future.