zsaki.erik

zsaki.erik

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DIY Bicycle Repair Stand by Andrew Li:                                                                                                                                                                                 More

You may remember seeing Andrew Li’s Homemade work stand being used while were were out fixing bicycles for the homeless. I asked him to provide us a tutorial on how he built it and he did not…

Picture of cheap DIY electronic pH meter

an electronic pH meter is made out of 3 main components; the pH probe, the voltmeter and the circuit.