Kleines Helferlein

@raph1
10 Followers
21 Following
29 Posts
Ich bin ein bastelnder Elektroingenieur - privat gehe ich an alles. Stahl, Holz, rund ums Haus usw. usf.
So werden Brunnen gebaut und Motorräder repariert. Es wurden verrückte Mechaniken im Haus gebaut und überall blinkt irgend eine Elektronik :) Kurz: Nerdiger Tekki #DIY #IoT #electronics #nerd #maker #3Dprint #elektronik #Mikrocontroller #entwicklung #arduino #8bit #esp32
Thinking about building a DIY spectrometer — I already have a TCD1304 and the data processing should be straightforward. Really inspired by this project: https://www.thingiverse.com/thing:2215840@esbenrossel, any thoughts? Do you think the optics could be replaced with cheap CS‑mount lenses (e.g., from AliExpress) without losing too much performance? The Pentax Lenses are "expensive" (50€++) in Germany.
#DIY #Spectrometer #TCD1304 #OpenHardware #Optics #CSMount #Maker #CitizenScience #Thingiverse #Electronics
OtterVIS LGL spectrophotometer by esbenrossel

This is a 3D-printable spectrophotometer based on a TCD1304 linear CCD and standard 35mm camera optics. The resolution is ~1nm (the Na-doublet at 589nm is just exactly not resolvable).The total price of the components depends on how cheaply you can scavenge them on that auction site, but expect to pay something like this:Optics: 2x 10$, CCD: 10$, MCU: 15$, Grating: 3$, A few $$ for misc. parts.Total: ~60$

Thingiverse - The community for Open Hardware
Los geht's.... Schwupp sind 6m stahl klein. Nun "nur noch" schweißen.
Wie nennt sich noch die Website auf der Nachrichten in Kategorie mit rechts-links Barometer gepackt werden? Auf Basis der Veröffentlichungen in Medien die eben rechts oder links zugeordnet werden.... evtl wisst ihr ja was ich meine
It changes the Pens again... now everything is done and ready for next 40 years #penplotter #retrocomputing #repair #electronics #diy
Maybe old dried flux? I dont think those are Whiskers

Somebody a idea what's happend here? On all solderjoints white something like powder. Pcb is from 1989

#diy #repair #retrocomputing #solder

one additional info: sometimes also the carusell doesn't work propper. The Caps are all good and the 30V Rail is fine. Maybe you have some tips for me...
#plotter #electronic #repair #retrocomputing #penplotter

No it doesn't work... damn.

The Motors are DC Brushed Servos driven by a Darlinton BJT H-Bridge with TIP100/105. One BJT was burned and i replaced them with TIP130/135. But the same Transistor died. I replaced the Wire and then add some 2R2 Resistors into the Motor Lines. While Printing the Voltage across one Resistor reach up to 2V at 60cms/2g (less then 1A). After a while i got axis error even if i run slower.
The ULN Driver (see Pics) seems to work fine - but i have no glue what to do...

Some softwarestuff Tool du But Hardware works. I think I need to tweak my vpype command.
I hope its done now.... New driverstage for dc servo and reworked motorcable. Now I fix a Mechanic failure and then the reassembly begin :)