convert two analogue pulses (5000/second) for display on HDMI or Composite Video

[JonW]

HI Charlie

I received the 18F27Q43 Dev board today and have designed and released a Galvanically Isolated 4CH multiplexed 12CH ADC piggyback board for you based on the MAX22530AWE.  This shouldn't cause any issues with back-powering, since the VDD, Signal, and GND pins are isolated.  I have the parts for this but need to build it once the PCB arrives; the Dev just needs the PIC, as these were out of stock at LCSC/JLC.

The EMU worked well with Les' game, so that's completed. I just need to develop the FPGA Dev with a Retransmit, isolated HDMI, and a separate JTAG programmer based on the FTDI.  I have ordered a couple of FPGA chips, and we will see if these are genuine!

Be a few more weeks before I have a full dev setup with working Positron Code. I will also complete a MAX22530 library and a demo SSD1306 with Les lib driving the HDMI. 



Keep you posted

[charliecoutas]

That's really good Jon. I think the museum will be much indebted to you. No rush. Thank you.

Charlie

[JonW]

Hi Charlie

Update on this.

I completed a new dev board for the Gowin FPGA; see below. This has an RP2354A handling the FPGA management functions and will help with debugging future Verilog.  Should be a really nice FPGA dev platform with a direct connection to the RP2354A for any post-processing and programming, including more memory and a Silabs clock gen IC phase-synchronised to the FPGA clock.  Some headers for RF or slower 8-bit parallel DACs and ADC.  An SPI header to use the board as an HDMI SSD1306EMU.  Added a 3V3 Jtag (missing off the tang nano) to directly flash the FPGA and some surge and ESD protection on the HDMI.  Will take a couple of weeks to come in.

I have also ported the RP2354A to a separate dev board and added 12 x WS LEDs and a Wi-Fi module; this could be used with MicroPython or C to run some very large display functions and Wi-Fi stuff. 

I will also bring up the isolated ADC board and the PIC DEV with Les OLED lib that I have been testing and write some code for the demo on the 27Q Dev for you