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Rui1973Martins 17/03/2018

The item arrived, the box had a dent on a corner, but fortunately, nothing was damaged inside. No instructions whatsoever, but it's easy to follow the PCB silkcreen names. But at least we need some form of description, what the several Jumpers are for. JP3, can be inferred by pictures that it's for the cooling fan. JP4, JP6 and JP7 I have no idea what they are for, since there is no description on the PCB, besides their names. I'm assuming JP6 is used as some form of controlling the output power or frequency, but not sure how to wire it up. If no manual or instructions are available, the last resort is to try and find the datasheet, for that IC, and follow the traces on the PCB to find out. It should be easy for seller to provide a simple connect and design circuit manual. However, capacitor C11 was missing. There should have been 4 capacitors 104, 500V, but only 3 were in the package.

DC12-36V 1000W 20A ZVS Induction Heating Board Heater Module Cooling Fan DIY Kit

US$41.37

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LA03-3500 450nm 3.5W Blue Laser Module TTL Modulation Fan Heat Sink for EleksMaker DIY Engraver

US$102.89 US$122.99

Q: I'm asking for help!!! How to Correctly Connect an ElecsMaker® ManaSE Controller 2 Axis Stepper Motor Driver Controller Board For DIY Laser Engraver with Laser EleksMaker® LA03-*****nm 3.5W Blue Laser Module With TTL Modulation for DIY Laser Cutter Engraver ??? PWM=TTL ?? TTL Yes, low level (0V): OFF, high level (5V): ON. PWM - ???

Asked by jovchodochev on 2017-12-10 04:37:20

Rui1973Martins PWM = Pulse Width Modulation NOTE: Search wikipedia for Pulse Width Modulation It means that instead of having it always ON, you can turn it ON and OFF at a fast pace, so that total power is less than maximum. A signal something like this: _-_-_-_-_ The signal should toggle OFF and ON, continuously, but by varying the time it is ON and the time it is OFF (called "duty cycle"), you can control the power output.

2019-06-06 11:14:32 Helpful

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Rui1973Martins 19/08/2018

All items arrived, with the correct sizes as requested. However, there is something that is a negative point, which is the fact that the tools themselves are not marked with their size, nor the cases they come in. However the bags they came on, are labeled with the sizes. The only initial doubt I had was that I had assumed the values to be the Diameter when they are in fact the Radius of the mills. It's not very usual to defined mills by their Radius where I live, hence my mistake on assuming the values were the Diameter. So the items are double the size I wanted, but I still have uses for them.