BlueSCSI v2 help needed with building boards

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pezter22

New Tinkerer
Feb 26, 2022
4
0
1
I build my own BlueSCSI's to save money and have built about 30 version 1.1 boards. I am now replacing my v1.1 boards with v2 boards. I ordered 15 PCB's partially built from JLCPCB. I did not order the LVT245, LVT125 0.1uf caps and U3. Everything else including the small resistors were placed on the PCB.

I've built five so far. Four are not initiating. The four not working have the activity light comes on the BlueSCSI with one long blink for 5 seconds then off, then long single blink for 5 seconds. I have reflowed the boards and touched up all the pins and pads, cleaned and recleaned the boards. I have continuity.

The logs all state the same thing except the working one, it adds this to the end of the log.

Clock set to: 203MHz
Initialization complete!
Disabling status LED
INFO: Pico Voltage: 3.192V.

My question is what is the IC that I need to look at to check why clock is not initiating.

Log of working BlueSCSI

Platform: BlueSCSI (Pico1/W)
FW Version: 2026.02.08-rel Feb 8 2026 23:08:41
Flash chip size: 2048 kB
I2C Supported
Reclock RP2040 & Pico 1/1W based boards to standardized speed
Initial Clock set to 133MHz
Reclocking the MCU to 203MHz
Setting the SDIO clock to 41MHz
After reclocking, system reports clock set to 203MHz

=== SD Card Info ===
SD card detected, exFAT volume size: 15190 MB
SD Name: DVRBL, MID: 0x03, OID: 0x53 0x44

=== Global Config ===
bluescsi.ini not found, using defaults

=== Finding images ===
=== Finding images in / ===
== Opening /HD06_512-OpenRetroSCSI-7-1.hda for ID:0 LUN:0
---- Configuring as disk drive
== Opening /HD10_512 HFS.hda for ID:1 LUN:0
---- Configuring as disk drive

== Platform supports ROM drive up to 800 kB

=== Configured SCSI Devices ===
ID: 0, BlockSize: 512, Type: Fixed, Quirks: Apple, Size: 512000kB
ID: 1, BlockSize: 512, Type: Fixed, Quirks: Apple, Size: 962560kB

Clock set to: 203MHz
Initialization complete!
Disabling status LED
INFO: Pico Voltage: 3.192V.

Log of one of the non-working BlueSCSI with no Clock set message

Platform: BlueSCSI (Pico1/W)
FW Version: 2026.02.08-rel Feb 8 2026 23:08:41
Flash chip size: 2048 kB
I2C Supported
Reclock RP2040 & Pico 1/1W based boards to standardized speed
Initial Clock set to 133MHz
Reclocking the MCU to 203MHz
Setting the SDIO clock to 41MHz
After reclocking, system reports clock set to 203MHz

=== SD Card Info ===
SD card detected, exFAT volume size: 15190 MB
SD Name: DVRBL, MID: 0x03, OID: 0x53 0x44

=== Global Config ===
bluescsi.ini not found, using defaults

=== Finding images ===
=== Finding images in / ===
== Opening /HD10_512 HFS.hda for ID:1 LUN:0
---- Configuring as disk drive
== Opening /HD06_512-OpenRetroSCSI-7-1.hda for ID:0 LUN:0
---- Configuring as disk drive

== Platform supports ROM drive up to 800 kB

=== Configured SCSI Devices ===
ID: 0, BlockSize: 512, Type: Fixed, Quirks: Apple, Size: 512000kB
ID: 1, BlockSize: 512, Type: Fixed, Quirks: Apple, Size: 962560kB

Thank you in adavnce.
Cheers, Steve
 

pezter22

New Tinkerer
Feb 26, 2022
4
0
1
Did I order the wrong transceiver (LVT245)?
I ordered this from Digikey part no.

SN74LVT245BPW​


The JLCPCB site uses this part from the gerber BOM

SN74LVTH245APWR


LVT125 ordered from Digikey

SN74LVT125PWR​

JLCPCB gerber part is

SN74LVTH125PWR​


Would a wrong part explain my issues? Or did I get bad parts which could explain why one board is working and not four.
 

pezter22

New Tinkerer
Feb 26, 2022
4
0
1
I am guessing I have some bad boards that were made from the PCB maker. All parts are correct as is the soldering. I only placed the LVT's onto the board.

I have some bare boards made a month before. Will try those and see if similar issues occur.
 

pezter22

New Tinkerer
Feb 26, 2022
4
0
1
Just built four new boards from the bare PCB boards I had ordered. I am getting the same single long 5 second activity LED repeating. Am I missing something?

I had my boards built at JLCPCB. I used the BlueSCSI files from the site "Desktop_50_pin"
My first boards I had everything placed on the boards except for the 0.1uf capacitors and the LVT125 and LVT245 IC's. The other batch were completely bare. Both have the same result - long 5 second activity light with no mounting of the drives. SD cards can be placed in other BlueSCSI v2 (purchased from JCM) and v1.1 (built myself) and will mount.