Search found 6110 matches

by danielj
Thu Jul 19, 2018 9:40 am
Forum: hardware
Topic: FreeFi-232 v2
Replies: 68
Views: 1474

Re: FreeFi-232 v2

I'll post a full BOM once I've finalised it, along with RS part numbers. Patience :)

d.
by danielj
Thu Jul 19, 2018 9:29 am
Forum: hardware
Topic: FreeFi-232 v2
Replies: 68
Views: 1474

Re: FreeFi-232 v2

Yes.
Socket: RS Stock No.544-3828
Switch: RS Stock No.756-1644
MAX3237: RS Stock No.660-7685

The rest should be fairly straight forward. Make sure the tants are case size B and 10V or more.

d.
by danielj
Wed Jul 18, 2018 9:16 pm
Forum: hardware
Topic: FreeFi-232 v2
Replies: 68
Views: 1474

Re: FreeFi-232 v2

It's the one on github - it should be just about right (although I don't think it's the right USB connector): https://github.com/stardot/esp8266_modem/blob/master/kicad/FreeFi232Large/BOM.csv Once I'm sure it works I'll put up a proper BOM. The only things likely to change are the number of resistor...
by danielj
Wed Jul 18, 2018 6:48 pm
Forum: hardware
Topic: FreeFi-232 v2
Replies: 68
Views: 1474

Re: FreeFi-232 v2

I'd recommend getting a temp controlled iron - it makes life much easier. Lots of people on here use the Hakko fx888d - good value and good quality. Do make sure you get it from a genuine distributer, as there are quite a few counterfeit ones doing the rounds. SMD seems daunting at first but it's re...
by danielj
Wed Jul 18, 2018 5:27 pm
Forum: hardware
Topic: FreeFi-232 v2
Replies: 68
Views: 1474

Re: FreeFi-232 v2

Hey Robin - it's all SMD I'm afraid. No time to learn like the present I guess! :? :shock: - what soldering weapon have you got? The ESP12 is SMD, and the level shifter I'm using isn't available as a DIP so I just did everything as SMD (it makes the routing a bit easier too as you can run underneath...
by danielj
Wed Jul 18, 2018 8:08 am
Forum: emulators
Topic: B-Em
Replies: 375
Views: 21876

Re: B-Em

For GitHub projects the best way to get the attention of the contributors is to raise an issue.

But yes, get coding :D
by danielj
Tue Jul 17, 2018 8:39 pm
Forum: emulators
Topic: B-Em
Replies: 375
Views: 21876

Re: B-Em

I've just done the same, works like a charm - particularly good as the latest OSX broke compatibility with beebem :)

d.
by danielj
Tue Jul 17, 2018 4:17 pm
Forum: hardware
Topic: Advice on internal Datacentre 1MHz bus cable installation?
Replies: 22
Views: 710

Re: Advice on internal Datacentre 1MHz bus cable installation?

The backplate of the master's motherboard is attached to the motherboard so you don't need to desolder anything. You either have to unscrew it or desolder it on a beeb though.
by danielj
Tue Jul 17, 2018 3:21 pm
Forum: hardware
Topic: EUPURS and AP5 Cable(s)
Replies: 57
Views: 589

Re: EUPURS and AP5 Cable(s)

I assume you mean genuine FTDI chips, ebay one is probably genuine fake. My hookup wires are genuine bits of wire. But it could also be due to the 5v supply as I am driving it at the limit, or it could be because the Electron was dying, as now it is not well. Yes, I do mean the IC. I'm fairly convi...
by danielj
Tue Jul 17, 2018 3:08 pm
Forum: hardware
Topic: EUPURS and AP5 Cable(s)
Replies: 57
Views: 589

Re: EUPURS and AP5 Cable(s)

Maybe. But I use this one all the time with other TTL serial stuff without issue (same jumper wires as well come to think of it), but obviously I dont usually put it through a max3232. Likewise (although it did need an extra pullup on the FreeFi232) - but upurs was/is (afaik) particularly persnicke...
by danielj
Tue Jul 17, 2018 2:25 pm
Forum: hardware
Topic: EUPURS and AP5 Cable(s)
Replies: 57
Views: 589

Re: EUPURS and AP5 Cable(s)

Experience suggests those cheap ftdi boards don't use real ftdi chips... The signal out of mine (I have 3) isn't too clean...
by danielj
Tue Jul 17, 2018 6:37 am
Forum: introduce yourself
Topic: Atom Owner from Smalltown, Canada
Replies: 20
Views: 228

Re: Atom Owner from Smalltown, Canada

Hullo Peter :)

d.
by danielj
Mon Jul 16, 2018 7:52 pm
Forum: introduce yourself
Topic: Hello!
Replies: 17
Views: 240

Re: Hello!

Hello there! :)
by danielj
Sun Jul 15, 2018 8:13 pm
Forum: hardware
Topic: BeebSCSI 7_7
Replies: 32
Views: 466

Re: BeebSCSI 7_7

Don't use superglue. Top tip.
by danielj
Sun Jul 15, 2018 9:17 am
Forum: hardware
Topic: Electron RGB to VGI
Replies: 6
Views: 206

Re: Electron RGB to VGI

You can:
Use a gbs 8200 scan converter or equivalent to convert to vga.
Use a monitor that can display pal modes (eg, benq bl912).
Use hoglet's new dvi/hdmi converter with a monitor that has an hdmi/dvi input.
by danielj
Sun Jul 15, 2018 6:25 am
Forum: for sale / freebies
Topic: BeebSCSI mini
Replies: 168
Views: 15210

Re: BeebSCSI mini

Posts discussing the new beebscsi moved to here: viewtopic.php?f=3&t=15139#p204499
by danielj
Sun Jul 15, 2018 6:17 am
Forum: hardware
Topic: BeebSCSI 7_7
Replies: 32
Views: 466

Re: BeebSCSI mini

Yes I was looking at the BOM and wonder which to order. But assume with the exception of fitting under the Beeb this is just personal preferencance. The straight will fit a standard cable better as the connector is at right angles to the cable. The right angle will plug directly into the AP5. You w...
by danielj
Sun Jul 15, 2018 5:38 am
Forum: hardware
Topic: BeebSCSI 7_7
Replies: 32
Views: 466

Re: BeebSCSI mini

Only the mini fits under the beeb (and only the beeb, not the master). Straight through hole male for cable dangling: https://www.domesday86.com/?page_id=409 ... _Materials

But the right angled can be used for the AP5.
by danielj
Sat Jul 14, 2018 7:05 am
Forum: hardware
Topic: Cheap web-modem for the beeb/master (and arc if ya like!)
Replies: 103
Views: 3330

Re: Cheap web-modem for the beeb/master (and arc if ya like!)

Glad it's working! Only "enhancement" I'm intending to add is the dacom compatibility mode and eeprom saving of various settings. If anyone wants anything else I would encourage them to contribute it :D
by danielj
Fri Jul 13, 2018 11:10 am
Forum: hardware
Topic: Cheap web-modem for the beeb/master (and arc if ya like!)
Replies: 103
Views: 3330

Re: Cheap web-modem for the beeb/master (and arc if ya like!)

Duncan, I'm assuming it's a character in your password that's different on the beeb... No idea what though. Once the WiFi is set up the esp12 remembers it.
d.
by danielj
Fri Jul 13, 2018 11:08 am
Forum: hardware
Topic: Cheap web-modem for the beeb/master (and arc if ya like!)
Replies: 103
Views: 3330

Re: Cheap web-modem for the beeb/master (and arc if ya like!)

Use commstar version 1.4. Once connected change from terminal to viewdata mode and ensure you press I and change the speeds back to 2400 before pressing C to enter chat mode again (ie connect to the modem).

Commstar 2 won't work.
by danielj
Fri Jul 13, 2018 10:12 am
Forum: hardware
Topic: FreeFi-232 v2
Replies: 68
Views: 1474

Re: FreeFi-232 v2

Fork the repository, write the relevant code, upload it to your repository, and make a pull request? :) At which point I can pull the code in and merge it with the master source? Re. "other NC in cable" - this looks like a modem, it's up to the end user to decide how to connect it to their computer....
by danielj
Thu Jul 12, 2018 8:51 pm
Forum: hardware
Topic: Cheap web-modem for the beeb/master (and arc if ya like!)
Replies: 103
Views: 3330

Re: Cheap web-modem for the beeb/master (and arc if ya like!)

Use esptool.py to completely erase the flash, then start again:
https://nodemcu.readthedocs.io/en/latest/en/flash/


d.
by danielj
Thu Jul 12, 2018 8:19 pm
Forum: hardware
Topic: Cheap web-modem for the beeb/master (and arc if ya like!)
Replies: 103
Views: 3330

Re: Cheap web-modem for the beeb/master (and arc if ya like!)

It's the ESP8266 on the NodeMCU that's not 5V tolerant. Max3232 can work over a voltage range, and converts ~ between 3 and 5V to 12V and back again, MAX232 is just designed to work at 5V. http://www.ti.com/lit/ds/symlink/max232.pdf -> it's why I used the 3237 (same as the 3232 but with more transce...
by danielj
Thu Jul 12, 2018 6:37 pm
Forum: hardware
Topic: Cheap web-modem for the beeb/master (and arc if ya like!)
Replies: 103
Views: 3330

Re: Cheap web-modem for the beeb/master (and arc if ya like!)

Right - so - the firmware in the main repository is designed to work with the new hardware - if you check the releases page, there's the last version that I had working nicely with the lolin setup. On a more positive note though, if this one works with the lolin board, that's all to the good. Have a...
by danielj
Thu Jul 12, 2018 11:14 am
Forum: hardware
Topic: FreeFi-232 v2
Replies: 68
Views: 1474

Re: FreeFi-232 v2

RTS/CTS will need uncrossing too. Wiring is as per:
ModemStraightDB25.gif
Edit: You can turn off hardware flow, in which case those lines are just ignored, but it does reduce reliability on the beeb end at higher speeds.
by danielj
Thu Jul 12, 2018 9:46 am
Forum: hardware
Topic: FreeFi-232 v2
Replies: 68
Views: 1474

Re: FreeFi-232 v2

"uncrossing" will involve a 9-pin to 9-pin, or 25-pin to 9 pin.. Ergo I'd have thought you may as well just build a straight through RS232-25pin-male to BBC 5pin and only have one cable in the chain. I'm only using a 25pin to 9pin adapter as I'd already built a straight through beeb->9pin, and I'm a...
by danielj
Thu Jul 12, 2018 7:15 am
Forum: off-topic
Topic: Football
Replies: 8
Views: 204

Re: Football

:D
I'm anything but a football fan, but I've quite enjoyed this little stint :)
by danielj
Thu Jul 12, 2018 5:25 am
Forum: hardware
Topic: FreeFi-232 v2
Replies: 68
Views: 1474

Re: FreeFi-232 v2

Yes, and no crossover needed as the rs232 is wired up as a modem's would be (ie DCE). You need a crossover if you connect two data terminals together (ie computers).

(and yes, all five pins are connected to give hw flow control :) )

d.
by danielj
Wed Jul 11, 2018 8:58 pm
Forum: hardware
Topic: Music 500 mod
Replies: 4
Views: 105

Re: Music 500 mod

That's fine - you're just pulling/biasing/somethingerising a line. I remember doing this and thinking it shouldn't be measuring zero, but it was, and it was and it was fine that it was :)

d.