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Auto-fire circuit based on IC 555Greetings! Spanish magazine Microhobby once wrote an article explaining how the auto-fire circuit worked on a joystick and the interface requireme…
... described there :-/
The ceramic capacitors reading 100k and 10Kp ... -
Replacing lower RAM 4116 ZX Spectrum 48k - desoldering advice please?A long post, but interesting pictures perhaps. :) I'd like some advice: (also apologies I think I picked the wrong 'Hardware' category for this, plea…
... replaced it with a 50nF ceramic.) Also, I caught the trace ... -
Fixing a poorly Issue 3 - Odd faults.Here's one for you Spectrum fixers, I warn you it's a long one. I've spent a couple hours this evening doing several repairs on a rubber keyed Speccy…
... that be caused by the ceramic disc capacitors around the upper ... -
+3 - beeper sounds but no AY musicHi guys I am repairing a plus 3 revision 2 board that had no sound at all. Using schematics from https://zxnet.co.uk/spectrum/schematics/ I manage…
... does anyone have any ideas? C41 electrolytic cap also seems to ... -
Have you got a project or are doing anything interesting during lock down?I’m “having” “fun” cutting shapes in wall tiles to fit around the electrical switches, sockets and heating/boiler control box in the utility room. …
... the correct shaped holes in ceramic wall tiles is not that ... -
16pf Capcitors for C72/C73 issue 3b. Can I use 18pf?Looking at the service manual it states to use a 16pf ceramic disc capacitor in positions C72 and C73 on issue 3b boards. Is this very critical in bo…
... states to use a 16pf ceramic disc capacitor in positions C72 ... -
The Spectrum In EuropeWhat are the differences between Speccys in Europe and the UK? ie would a British 48K work in France or Italy, and vice versa?
On a +2a ceramic resonator x200 can be changed to either 5.5Mhz or 6Mhz. I'm not sure about other spectrums.
Fraser. -
Sound on Spectrum +2/a & 3Okay, so now I've got 2 +2's and a +3 and they all have absolutely the crappiest no existant, buzzy, sound on the planet. Surely they all cant be fau…
Britain uses PAL I with a different audio carrier to PAL G used in some european countries. The +2A has a 6MHz ceramic resonator that can be changed easily. -
Is Spectaculator Worth Registering?I normally use RealSpectrum and was thing of trying another emulator. What are the pro and ons of Spectacultor? Does it support disk image files?
... the Spectaculator to run a ceramic glaze calcuation software programmed in ... -
Sound distortion on +2/+3Hi all, this is my first ever posting, so please be gentle! I have two +2s and a +3(all second-hand but in vgc) and the AY output on all three is ver…
... carrier is wrong. Only 1 ceramic resonator would need to be ... -
(Not speccy) Networking xp I`m trying ( for two days now! and fed up with it) - to some laptops to my PC. How the hell do you make this work? If anyone wants to help Please s…
... transfer?
Ceramic glaze recipes & ceramic materials info. Old customer ... stock control, invoicing, home programmed ceramic calc software, and material database ... -
(Not speccy) Networking xp I`m trying ( for two days now! and fed up with it) - to some laptops to my PC. How the hell do you make this work? If anyone wants to help Please s…
... that my fiance is a ceramic designer and she is always ... -
(Not speccy) Networking xp I`m trying ( for two days now! and fed up with it) - to some laptops to my PC. How the hell do you make this work? If anyone wants to help Please s…
... that my fiance is a ceramic designer and she is always ... -
How many of you lot still own your original Speccy?I have reason to believe the majority of you still own your original Spectrum. I think thats great, but it also really suprised as well. I was obsess…
... .
I made a ceramic kiln controller from a speccy ... -
voice sampling with ADCs and DACsHi sorry it's off topic, but I wonder if anyone can help with an electronics problem. I'm trying to build a project for A-level electronics, using an…
... /> Did you put a 100nF ceramic disc capacitor from Vcc to ... -
sex toysjust got a new stationery catalogue at work and i was amazed to find the amount of gadgets that can be plugged into a usb port. eg. desk fan, mug he…
... good one. a red hot ceramic disk that looks similar to ... -
Scottie Live on Stage 18/1/2007I am performing at my Student Union for their tallent show. It's sort of a best of last years entrys thing to encourage people to perform this year. …
... Breakfast and they had these ceramic Spice Girls dolls, the only ... -
Audio input on a +2would it be possible to connect an external tape recorder to the socket at the back,or would something bad happen?
... normal Speccy (a 100nF - presumably ceramic disc capacitor, and a 10k ... -
TV Modulator. Can it be repaired?Is it possible, to repair tha TV modulator (after removing it) if it gives wavy picture? I replaced both transistors (tr1/2) and both electrolytic ca…
... since the modulator has only ceramic ones, i hope replacing the ... -
Bargain[url]http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=120105608322&ssPageName=ADME:B:SS:UK:1[/url]
... PCB is designed to accept ceramic capacitors, the UK machine being ... -
Testing RAM Chips After RemovalHi I am going to use Winstons Hot Air Gun method of removing the RAM chips from a 4S circuit board. I wish to check the RAM chips, I have a Logic Pr…
... 5v operation)
- 1 x ceramic disc (220nF) decoupling cap for ... -
TIPP31 transistor questionYesterday I had the time to try and repair a 4S issue 48k spectrum I had. First of all I replaced all the electrolytic capacitors. The tr4 transistor…
... I've notived that a ceramic disc capacitor just above the ... -
Thunderstorms coming...Check lightning strikes (updated in realtime) here: [url]http://www.meteorologica.info/freedata_lightning.htm[/url] (there are also European maps o…
... pan and KodacolourII, E22 and C41 colour process, D76 and acutol ... -
Thunderstorms coming...Check lightning strikes (updated in realtime) here: [url]http://www.meteorologica.info/freedata_lightning.htm[/url] (there are also European maps o…
... pan and KodacolourII, E22 and C41 colour process, D76 and acutol ... -
A Spectrum that fixes itselfWell, the modulator on my 128K toastrack machine fixed itself. It used to drift horribly within the first half hour or so of power up, but now it's a…
... were wound on super-stable ceramic cores, and the the coil ... -
Anybody in the printing trade?I'm after the name of the object created on plastic film containing an extremely contrasty image, used to photo etch the printing rollers. It's like…
Mu brother was a printer (ceramic screen printer), the stuff you need is [url=http://www.ulano.com/indrflm/indirect.htm]here[/url] -
Anybody in the printing trade?I'm after the name of the object created on plastic film containing an extremely contrasty image, used to photo etch the printing rollers. It's like…
... ]Mu brother was a printer (ceramic screen printer), the stuff you ... -
Eprom blowerdoes anyone know a site with plans for an eprom programmer project that'll blow 27C256s. I attempted to build one called Kisseprom, but the software …
... because they are in the ceramic case and have a quartz ... -
Any '81 buffs?Does anybody know the running clock frequency of a Z80A in a ZX81? I've measured the clock signal on pin 6 and got 6.47MHz, and I'm sure it's not ju…
... "2"... +-6.5Mhz is the ceramic resonator freq. DIV by 2 ...
