Review on Makeronics Solderless 3220 Tie-Points Experiment Plug-In Breadboard Super Kit With Aluminum Back Plate And 140 U-Shape Jumper Wires + 65 Jumper Wires For Prototyping Circuit/Arduino by Los Bizness

While initial thoughts were positive due to the solid construction and overall spacious layout, I found that the pins on the board are not 100% picking up signals as they should. I built a simple full wave rectifier circuit using a few diodes and a resistor, but I saw a strange waveform on the oscilloscope. The result shown in the left image is the same as the output but was incorrect. It wasn't until I put my palm on the circuit and pressed all the components that the output became what it should have been, as seen on the right. After I stopped clicking on the components, the waveform went wrong again. I recreated the circuit on another board and it worked fine. Most likely, the reason is bad contacts on the board.