ZX21 Project ZX81 Replacement PCB
Re: ZX21 Project ZX81 Replacement PCB
Congratulations. A nice Christmas present for yourself!
In theory, there is no difference between theory and practice. But, in practice, there is.
Re: ZX21 Project ZX81 Replacement PCB
Thanks, Paul,
I am very pleased it does something. My DkTronics keyboard has some faulty keys on it I will have to see if I can repair/replace them.
FordP (Simon Ellwood)
Time is an illusion. Lunchtime, doubly so!
Time is an illusion. Lunchtime, doubly so!
Re: ZX21 Project ZX81 Replacement PCB
Merry Christmas !
Xavier ...on the Facebook groupe : "Zx81 France"(fr)
Re: ZX21 Project ZX81 Replacement PCB
Thanks for your interest. You may as well wait a few weeks while I get it tested/fixed.
FordP (Simon Ellwood)
Time is an illusion. Lunchtime, doubly so!
Time is an illusion. Lunchtime, doubly so!
Re: ZX21 Project ZX81 Replacement PCB
OK, I have a mini update. It is not great news.
My DKTronincs keyboard has four or five broken key switches so is a no go at them moment
I got some ZX81 keyboards from Ebay so I thought I would try one of those. I have found my first major mistake. The 5 pin keyboard connector (KB1) is the wrong way round. If used as is this mirrors the key rows so 1 is 5 and 5 is 1. Doh!
I have desoldered it and put is in the other way round and managed to get it plugged in and yes of course it works.
Here is a very short video of it working on my dirty scruffy bench https://youtu.be/xuRKypUay-w
I will do more testing and start testing a lot of the extra features now.
Happy new year to one and all.
My DKTronincs keyboard has four or five broken key switches so is a no go at them moment
I got some ZX81 keyboards from Ebay so I thought I would try one of those. I have found my first major mistake. The 5 pin keyboard connector (KB1) is the wrong way round. If used as is this mirrors the key rows so 1 is 5 and 5 is 1. Doh!
I have desoldered it and put is in the other way round and managed to get it plugged in and yes of course it works.
Here is a very short video of it working on my dirty scruffy bench https://youtu.be/xuRKypUay-w
I will do more testing and start testing a lot of the extra features now.
Happy new year to one and all.
FordP (Simon Ellwood)
Time is an illusion. Lunchtime, doubly so!
Time is an illusion. Lunchtime, doubly so!
Re: ZX21 Project ZX81 Replacement PCB
Well that was quicker than I expected but the Wespi connector seems to do things!
https://youtu.be/JwaPduEwE6U
https://youtu.be/JwaPduEwE6U
FordP (Simon Ellwood)
Time is an illusion. Lunchtime, doubly so!
Time is an illusion. Lunchtime, doubly so!
Re: ZX21 Project ZX81 Replacement PCB
I am starting to look at getting the sound working. I have a "organ" program typed in from the zonx81 manual.
FordP (Simon Ellwood)
Time is an illusion. Lunchtime, doubly so!
Time is an illusion. Lunchtime, doubly so!
Re: ZX21 Project ZX81 Replacement PCB
Hi,
Is a Bluetooth module can be used instead of the ESP32 on ZX-Wespi project ?
For input or output transferts:
Bluetooth-Audio-Transmitter-Module-Board-4-1-Stereo-Audio-GFSK-Transceiver-Wireless-Speaker-Headphones-KCX-BT
Can we send the AY sound to the ESP32 to retrieve the sound ?
[EDIT 1: Yes, all channels are link to the MIC socket… but if the AY sound generator is freeze, the MIC signal from the ULA will be unable to be save.]
[EDIT 2]
Is a Bluetooth module can be used instead of the ESP32 on ZX-Wespi project ?
For input or output transferts:
Bluetooth-Audio-Transmitter-Module-Board-4-1-Stereo-Audio-GFSK-Transceiver-Wireless-Speaker-Headphones-KCX-BT
Can we send the AY sound to the ESP32 to retrieve the sound ?
[EDIT 1: Yes, all channels are link to the MIC socket… but if the AY sound generator is freeze, the MIC signal from the ULA will be unable to be save.]
[EDIT 2]
Xavier ...on the Facebook groupe : "Zx81 France"(fr)