Lmst

#LogicProbe

I wrote a very stupid and ugly #z80 #assembly to try it (I'm sure it is filled of errors and I will need a lot of debugging with the #logicprobe), but I could not write it to the #EEPROM . The #minipro errors out while checking the first byte after writing it. That's strange, because I'm using the same programmer and the same eeprom chip as before, and always worked. But in the meanwhile I changed computer, operating system and USB cable, so... troubleshooting time! Yay! 🙄

Jan Beta Makes A Simple 555 Based Logic Probe
#C64 #Commodore64 #555Timer #LogicProbe #ElectronicsDIY #CircuitBuilding #Instructables #ElectronicsTutorial #ILC555 #NE555 #DIYProjects #TestEquipment
https://theoasisbbs.com/jan-beta-makes-a-simple-555-based-logic-probe/?feed_id=1024&_unique_id=677bea5ce5c1e

Making a Simple 555 Based Logic Probe

https://makertube.net/videos/watch/5d1de72a-9686-4118-850d-1b1ef4f73863

New video! I'm building a simple 555 timer based logic probe from spare parts I had laying around.

YouTube: https://youtu.be/NhgjBUmnA7k
PeerTube: https://makertube.net/w/cuUPCfYmzMeL8DkFuXgW2a

#LogicProbe #DIYLabEquipment #LogicTester #NE555 #555Timer #Circuit #Schematics #DIY #Homemade #Electronics #Tinkering

Thumbnail for my video. A self-made logic probe in a black project enclosure on my workbench. A red probe from a cheap multimeter is connected to the box which has a green "high" LED and a red "Low" LED plus a switch that is labelled "TTL". In the background, there's the edge of a circuit board which the logic probe is connected to. The overlayed text reads "DIY Logic Probe".

My new #soldering corner, almost finished setting it up. There will be another table right underneath the roof window on the right, where the final spot for the soldering station will be, so that the fumes get extracted better. But I had to give it a try, after so long no place for my hobby. A very old logic probe kit. I'll replace the LEDs with brighter ones, and the tip needs improvement. But I'm quite satisfied with my work and it was fun.
#electronics #hobby #solderingkit #logicprobe

the new electronics hobby corner. on the left are the retro computers: two C64s, a C128, and an Amiga 500. at the wall is a table with the soldering station. undern the table is a cat's nest.

the logic probe kit, the components are fitted, but not yet soldered. the label calls it "ICKIT Logiktester TTL MOS". the main chip is a MC14049BCP (a 4049 hex inverter)

finished assembly. the probe tip needs rework, since it is too small and is lose, and the LEDs are very dim.

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