MAKER
The ESP-WROOM-32 is a low-power communication module that combines Wi-Fi and Bluetooth. It has an appearance similar to the NodeMCU, and the specification is as follows. There is the pin out of ESP-WROOM-32. You can add it by using the unofficial board URL for use in the Arduino IDE environment, and install it in the …
Continue reading “2019.07.15.(pm): How to use IR sensor with ESP-WROOM-32”
First, let’s look at the motor driver used. I used the DMD-200 motor driver. The pin map of the motor driver is shown below. The leftmost GND and VCC are the connecting parts of the power supply, and M1 and M2 are the connecting parts of the two poles of the motor. The PWM on …
An ‘oscilloscope’, previously called an ‘oscillograph’ and informally known as a scope or o-scope, CRO (for cathode-ray oscilloscope), or DSO (for the more modern digital storage oscilloscope), is a type of electronic test instrument that graphically displays varying signal voltages, usually as a two-dimensional plot of one or more signals as a function of time. Other signals (such as sound or vibration) can be converted …
The coupling I have is a bending coupling. This coupling is not appropriate because I need a rigid and well-fixed shaft. So I plan to make a rigid coupling with this belt gear fixed shaft. Drill the inner diameter of the coupling to 6mm to fit the motor shaft, and make a 3mm hole in …
Continue reading “2019.06.24(pm): Converting belt gearing to coupling using a drilling machine”
Even a scrolling saw can cut carbon pipes, but the vibration is severe and takes a long time. Makita 305MM Slide Compound Mitre Saw 1650W When cut with the Makita blade saw, the noise was very bad, but it was neat and precisely cut, and the length of the saw was lost from the carbon …
Today, I tested a new motor. The following is the specification of the motor. The new motor, the long-life high output bevel reduction gear motor BG42-4266-1290, is four times bigger than the maximum torque of the JGY370 worm geared motor. Speed control is also possible with dedicated motor driver.
DMC-10A DC12~30V MAX 200W https://www.motorbank.kr/goods/goods_view.php?goodsNo=1000007943
The picture above shows the combination of the gears I painted directly on the Rhino. I found that the legs were not perfectly symmetrically joined when they were assembled, and I disassembled them all again. I am disassembling and reassembling all of my legs, which is too delicate and takes too long.
Each frame made of bamboo and the frame made up of a joint drawn from a 3D printer were completed. Now I have to combine the parts of each leg to make it a complete legs. I made one dimension of the triangular part of the leg, and the balance collapses continuously in the course …
Continue reading “2019.06.17(am): The method to combine the legs”
I have made four walking robots so far, but models with aluminum profiles and acrylic are too heavy to walk well on the ground. Since the weight of the robot is the most important factor, it was necessary to make the skeleton and the body excluding the motor and the battery as the lightweight material …
Continue reading “2019.06.17(am): Strandbeest model using gear”