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 Travis Flores

Although initial thoughts were positive due to the solid construction and overall spacious layout, I found that the board's contacts don't pick up the signals 100%, eh they should be . 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 what was in the output, but it was wrong. It was only when I placed my palm on the circuit board 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.