Not sure what the white stuff is on most of the Discs are but they seem to test OK
RIMG2331.JPG (188.34 KiB) Viewed 1988 times
Although I have a copy of the Technical Manual, I searched for SCM90042C to see what came up. Nothing.......... best was a link to a site offering RFQ for obsolete components. Guess back in the day RAM would have been a bigger deal
Thanks for the photos - an interesting bit of kit.
Plenty could be done in 16k - it's high res graphics that have driven much of the need for speed and memory. Display data need lots of memory moved around at high speed - character mapped or low res (monochrome too) displays need a lot less power to work with...
Check out Mr Carlson's Lab on youtube for info on capacitor 'degradation ` and testing. Mostly old radio refurbs but he is very good..
Very interesting site that Lab. It looks like with the discs it's just ageing of their shell's, so no big deal as all I've tested seem fine. Couldn't get my hands on a reasonably priced 10,000uF so 2 x 4,7000 in parallel should work OK, at least for my testing.
Whilst waiting on them I'll try and get a composite output from something to display on my TV / Monitor.
As an aside - with newer esp32 targets (being the target of this thread?) - I just tried the c3 variant and get an error on compilation:
C:\ProgramData\MatrixTSL\FlowcodeV10\CAL\ESP\ESP_CAL_Delay.c: In function 'FC_CAL_Timer_Init':
C:\ProgramData\MatrixTSL\FlowcodeV10\CAL\ESP\ESP_CAL_Delay.c:176:66: error: 'TIMER_1' undeclared (first use in this function); did you mean 'TIMER_0'?
176 | case 1: timer_group = TIMER_GROUP_0; timer_idx = TIMER_1; break;
This using v5 - but the code does compile for esp32...
On esp32 - get
W (325) timer_group: legacy driver is deprecated, please migrate to `driver/gptimer.h`
I (333) cpu_sta
in the above posts I simply created a flasher using FCv10 and IDFv5 to blink the on-board LED and with Martin's help could compile to target.
Today I created a simple chart to connect to my router. If successful I'd see the ESP32-S2 appear as a client. I used the on-board LED to flash at certain points to indicate progress through chart and result of action.
Compiling to chip the ESP appeared to initialise but failed to connect to my SSID. The LED indicated a Return value of "0" after running the ConnectToSSID macro and my router didn't list any ESP/Espressif device.
I then tried creating an AP.
Again the LED would flash to indicate progress. According to the LED the AP was successfuly created and using my phone I could see the new network but could not connect (couldn't obtain an IP).
