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Forum Index : Microcontroller and PC projects : how do setup picomite hdmiusb ??
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| JohnS Guru  Joined: 18/11/2011 Location: United KingdomPosts: 4269 |
The highlighted firmware above isn't the same as the one Mick said (it's missing USB in the name). John |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 8617 |
SDcard CS is GP22 Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| dddns Guru Joined: 20/09/2024 Location: GermanyPosts: 772 |
I think this issue here can only be solved with the help of AI |
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| tenij000 Regular Member  Joined: 30/05/2025 Location: NetherlandsPosts: 94 |
cant do nothing whit the usb c port so stuck whit pico usb port from the pcb that working so if connect whit the usb port whit tera type see nothing on the monitor |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 8617 |
LOL - it needs something.... :) Did you solder the TP pads under the Pico? I can't remember if there are holes there so that you can get flux in later. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| tenij000 Regular Member Joined: 30/05/2025 Location: NetherlandsPosts: 94 |
yes i did |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 8617 |
Without the USB working you can only access the Pico using Tera Term and your PC's keyboard. To do that you need to load the ordinary HDMI non-USB firmware and keep the PC plugged into the Pico's USP port, not USB2. You can probably get the SD card working with OPTION SDCARD GP22, GP26, GP28, GP27 Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 8617 |
The USB connections from the Pico go to CN4 then the other side of CN4 goes to the USB hub chip. That's why you have to take the links off CN4 while installing MMBasic - the hub chip collides with the pico. Afterwards you need toreplace the CN4 links to get the hub to work. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 8617 |
Are there holes through the TP pads? Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| Bleep Guru Joined: 09/01/2022 Location: United KingdomPosts: 749 |
As Mick has already said. Follow these instructions EXACTLY. Remove all jumpers off the board and insert a micro-USB into the PROG connector, connected to a PC. • Load up the 'HDMIUSB' firmware (V6.00.00b10 or greater) then remove the microUSB connector. • Install jumpers to enable the USB hub circuit (1 to 2 and 3 to 4) • Install jumpers to enable the SDcard (default is GP26, GP27, and GP28) • Install a CR2032 battery • Connect a USB-C cable to a PC, and an HDMI cable and press the on/off switch. • You should then get the Copyright logo on the screen • From the PC, using a terminal program, Type "OPTION RESET HDMIUSB" to fully configure the board and you are good to go. The onboard USB hub allows you to connect up to 4 USB devices, keyboards mice, gamepads. A green LED adjacent to the USB connector will light up to indicate they are operational. See the PicoMite User Manual for more details Edited 2026-02-28 06:56 by Bleep |
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| tenij000 Regular Member Joined: 30/05/2025 Location: NetherlandsPosts: 94 |
thx for the help think i broke it did the hand soldering wrong but still have 4 boards left dint plugin dind hand solder the last step fill in the 4 holes if any wants those board say it |
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disco4now Guru Joined: 18/12/2014 Location: AustraliaPosts: 1102 |
If you get this you have correct firmware. > option reset list HDMIUSB OLIMEX USB PICO COMPUTER HDMIUSBI2S If when you try OPTION RESET HDMIUSB it does not wait for your response and you don't get a chance to enter Y/N THEN adjust your TeraTerm setting. > option reset hdmiusb This erases everything in flash including the A: drive - are you sure (Y/N) ? In TeraTerm: Setup-->Terminal-->Transmit Change to LF NOT CR+LF AFTER TeraTerm is set for LF on transmit it should show this. > > option reset hdmiusb PicoMiteHDMI MMBasic USB RP2350A Edition V6.02.01b2ive - are you sure (Y/N) ? Y OPTION SERIAL CONSOLE COM2,GP8,GP9 OPTION SYSTEM I2C GP20,GP21 OPTION FLASH SIZE 4194304 OPTION COLOURCODE ON OPTION KEYBOARD US OPTION RESOLUTION 640x480 @ 315000KHz OPTION DISPLAY 24, 80 OPTION SDCARD GP22, GP26, GP27, GP28 OPTION AUDIO GP10,GP11', ON PWM CHANNEL 5 OPTION RTC AUTO ENABLE OPTION MODBUFF ENABLE 192 OPTION PLATFORM HDMIUSB Formatting the A: drive F4 H7FotSF4xGT |
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| tenij000 Regular Member Joined: 30/05/2025 Location: NetherlandsPosts: 94 |
> option list PicoMiteHDMI MMBasic RP2350A Edition V6.02.00 OPTION SYSTEM I2C GP20,GP21 OPTION FLASH SIZE 4194304 OPTION COLOURCODE ON OPTION KEYBOARD US OPTION RESOLUTION 640x480 @ 252000KHz OPTION SDCARD GP22, GP26, GP27, GP28 OPTION AUDIO GP10,GP11', ON PWM CHANNEL 5 OPTION RTC AUTO ENABLE OPTION MODBUFF ENABLE 192 now got sound and the sdcard working  think did somthing wrong whit the usb hub part whit the hand soldering besouse of the canot connect to usb c |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 8617 |
Using that firmware you have no USB- You need the HDMIUSB version to put the Pico's USB port into Host mode. You also need the CN4 links in place to connect the hub to the Pico. While USB is running, if you want the console you have to use Tera Term at 115200 baud connected to USB2. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| disco4now Guru Joined: 18/12/2014 Location: AustraliaPosts: 1102 |
Did you get this via OPTION RESET HDMIUSB or did you manually enter the options. What about OPTION SERIAL CONSOLE COM2,GP8,GP9 Edited 2026-02-28 08:29 by disco4now F4 H7FotSF4xGT |
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| tenij000 Regular Member Joined: 30/05/2025 Location: NetherlandsPosts: 94 |
> OPTION SERIAL CONSOLE COM2,GP8,GP9 Error : Pin 11/GP8 is in use did manual |
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| disco4now Guru Joined: 18/12/2014 Location: AustraliaPosts: 1102 |
What does OPTION RESET LIST give. > option reset list HDMIUSB OLIMEX USB PICO COMPUTER HDMIUSBI2S If its not this you have the wrong firmware loaded. See the table here It is from the manual. Edited 2026-02-28 09:06 by disco4now F4 H7FotSF4xGT |
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| tenij000 Regular Member Joined: 30/05/2025 Location: NetherlandsPosts: 94 |
got wrong firmware becouse if do correct firmware no way to enter commands to picomite (bad soldering prob) but if connect to picomite whit the usb port whit windows  there seems to be a com12 port i can connect to it whit teraterm use LF still see nothing like text etc on screen if type on windows pc do need first to setup something else there is OPTION KEYBOARD US does mean can connect a ps2 keyboard to gpio pins try that way |
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