Part two of a full build of this moderately easy electronic kit, a 5-digit frequency counter and crystal tester.
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The variable capacitor is directed to be installed backwards. The correct way is to have the case go to ground so that a screwdriver can be used without bombarding the microcontroller with noise and causing a reboot. I reversed mine, and all is well. The other beneficial mod is to cut the trace between IN and the 102 capacitor, installing a switch. That way, when using the frequency indicator feature you can turn off the Colpitts oscillator which otherwise shunts the signal input.
But how can you test a four pin crystal oscillator, with this device?
Hello, the same device came to me from AliExpress, but I could not measure the clock crystal 32,768 khz, can you help me Thank you
I had to see part two after watching part 3. I had to see you suffer. But anyway good work, sometimes electronic challanges takes guts. I was eyeballing how to reprogram it for anything but its assinged task. Also, not soldering the pwr jack that fits nothing, causes some pwr issues. The show is great!
By the way, you can actually replace the controller if you somehow damage this one. You can read the content from the controller and store it somewhere, then if the original chip gets damaged you can write the same firmware on it. That's what I did – the controller's firmware is not read-protected, regular hardware for PIC controllers works fine with it.
Nice job. TheHWCave has a mod to change the xtal osc into a pre amp..a substantial improvement in sensitivity (rather than the TTL input levels needed), and offers some protection for the PIC from direct exposure/damage from the input signal. However, the EZM Electronics Studio version, with the preamp it has, far exceeds it in sensitivity.
You speak at just the right speed. Clear video. Give extra tutoring. Find job!
great video..what soldering iron are you using please?
Right x 11 !
i rum mine off a nine volts dc battery as it can handle that easy the counter draws what it needs from it and it dident do any harm to my kit at all
use a decent machine pin socket for your pic chip as its better at handling the heat from your soldering iron if its not temperature controlled
cleaver ive allways used blue tac to to hold parts in for soldering
¿Que valor tiene el condensador que has cambiado?