- Welcome to Olimex Support Forum.
Olimex Support Forum
Recent posts
#51
PCB TECH / Re: ADC for measuring voltages...
Last post by LubOlimex - August 25, 2025, 03:38:32 PMBetter get BB-ADS1220, you have more freedom about the powering. AVSS can go down to the absolute minimum of -2.8V.
In the BB-ADS1262 - it will be hard to measure negative voltages due to the design. Even if you disconnects the two grounds by removing resistor R1, we still create the voltages 3.3V->5V.
In the BB-ADS1262 - it will be hard to measure negative voltages due to the design. Even if you disconnects the two grounds by removing resistor R1, we still create the voltages 3.3V->5V.
#52
New Products release / Re: PICO2-XXL with RP2350 and ...
Last post by raybellis - August 25, 2025, 02:52:09 PMWhile clearly you can't solder both adjacent rows into a breadboard or strip board (because they'd then be connected), I *had* planned to put one row from each side into a breadboard with male pins, and then mount female pins for access to the other row. Perf board with pin-to-pin soldering would also have been fine, if the holes had lined up.
As for no harm, with respect I believe you're wrong. This makes it *much* harder for prototypers to use this board all for the sake of a tiny bit of additional PCB real estate, and means I'll probably use the WeAct RP2350B board instead, which *does* have 0.1" grid spacing between the two rows.
(p.s. for more developed projects, a physical CAD diagram giving the row spacing would be very useful so that people can build their own EDA footprints for mounting it on carrier PCBs.)
I've seen some fantastic products from Olimex, but this prioritising of size over usability seems misguided. This is on a par with the bizarre decision by Arduino to put a non-standard spacing between the split row headers on the top edge of the standard shield pinout.
As for no harm, with respect I believe you're wrong. This makes it *much* harder for prototypers to use this board all for the sake of a tiny bit of additional PCB real estate, and means I'll probably use the WeAct RP2350B board instead, which *does* have 0.1" grid spacing between the two rows.
(p.s. for more developed projects, a physical CAD diagram giving the row spacing would be very useful so that people can build their own EDA footprints for mounting it on carrier PCBs.)
I've seen some fantastic products from Olimex, but this prioritising of size over usability seems misguided. This is on a par with the bizarre decision by Arduino to put a non-standard spacing between the split row headers on the top edge of the standard shield pinout.
#53
PCB TECH / ADC for measuring voltages bel...
Last post by ilario - August 25, 2025, 01:52:08 PMI found these two nice ADC that should accept input voltages more negative than the ground: BB-ADS1220 and BB-ADS1262.
Checking the schematic in PDF of the ADS1262 I realized that AVSS (the negative voltage from the power supply, needed for measuring voltages below GND) is connected to GNDA, and GNDA is connected to GNDD (double checked with KiCAD), which makes measuring negative voltages impossible. Is this correct?
Interestingly, this does not happen in ADS1220, so it seems that I can measure voltages below GND using that one, is this right?
Thanks!
Checking the schematic in PDF of the ADS1262 I realized that AVSS (the negative voltage from the power supply, needed for measuring voltages below GND) is connected to GNDA, and GNDA is connected to GNDD (double checked with KiCAD), which makes measuring negative voltages impossible. Is this correct?
Interestingly, this does not happen in ADS1220, so it seems that I can measure voltages below GND using that one, is this right?
Thanks!
#54
PCB TECH / BB-RELAY3-12V and BB-RELAY3-5V...
Last post by ilario - August 25, 2025, 01:13:01 PMI am not sure this is the right board for this topic...
The documentation links on the boards with 3 relays BB-RELAY3-12V and BB-RELAY3-5V pages are broken, so I have some questions.
Is it ok to drive these relays with signals from GPIO at 3.3 V?
What should be connected to VCC (3.3 V or 12 V and 5 V respectively)?
What should be connected to GND and RGND?
Are these products going to be open source hardware?
Thanks!!
The documentation links on the boards with 3 relays BB-RELAY3-12V and BB-RELAY3-5V pages are broken, so I have some questions.
Is it ok to drive these relays with signals from GPIO at 3.3 V?
What should be connected to VCC (3.3 V or 12 V and 5 V respectively)?
What should be connected to GND and RGND?
Are these products going to be open source hardware?
Thanks!!
#55
MSP430 / Re: MSP430-JTAG-TINY-V2 Window...
Last post by LubOlimex - August 22, 2025, 03:48:14 PMNo, there are no signed drivers.
If you don't have authorization for it, ask the system administrator to do it for you.
If you don't have authorization for it, ask the system administrator to do it for you.
#56
MSP430 / Re: MSP430-JTAG-TINY-V2 Window...
Last post by amiller - August 22, 2025, 03:44:10 PMI am having a similar issue, with a slight variation. My company's security standards are not allowing me to install an unsigned driver, nor am I able to disable the driver signature enforcement.
Is there any sort of updated Windows11 driver that would allow me to continue to use the MSP430-JTAG-TINY?
Is there any sort of updated Windows11 driver that would allow me to continue to use the MSP430-JTAG-TINY?
#57
Neo6502 / Re: Oric Atmos .uf2 firmware
Last post by olimex - August 19, 2025, 11:49:34 AMdo not forget these are all open source projects done for fun in the free time, so they are at the stage which was satisfactory for the author, adding new features may or may not be implemented
#58
New Products release / Re: PICO2-XXL with RP2350 and ...
Last post by olimex - August 19, 2025, 11:46:29 AMYou are 100% correct, our people try to squeeze the overall dimension as much as possible and did this for the sake of the lost 0.1" step compatibility, but this board was never intend to go to breadboard anyway so there is no harm?
#59
Neo6502 / Re: Oric Atmos .uf2 firmware
Last post by LubOlimex - August 18, 2025, 09:00:14 AMThere are different emulators, not all support everything. Some support storing on the USB, some support storing on the SD card, some don't support storing to external storage.
#60
MSP430 / Re: MSP430-JTAG-TINY-V2 Window...
Last post by LubOlimex - August 18, 2025, 08:55:41 AMIt is unsafe to use those commands since they permanently disable the driver signature enforcement. Better use the GUI method to disable the "Windows Driver Signature enforcement" temporarily. Search online for "how to disable Windows Driver Signature enforcement Windows 11". It basically is from:
- Open Settings on Windows 11.
- Click on System.
- Click the Recovery tab.
- Click the Restart now button for the "Advanced startup" setting under the "Recovery options" section.
- Click on Troubleshoot.
- Click on Advanced options.
- Click on Startup Settings.
- Click the Restart button.
- Press "F7" or the "7" key to select the Disable driver signature enforcement option.
The drivers are unsigned so same requirements apply to Windows 10 and Windows 11 installations - first temporary disable "driver signature enforcement" and then install the drivers. Disabling the "driver signature enforcement" is kind of tricky, but there are many guides on how it can be done manually. After the driver installation the unit should be listed as "Olimex Tiny v2.00 JTAG for MSP430 (COMX)". If it gets listed differently you haven't pointed to the proper drivers.
Remember to copy-paste the latest dll files to the proper folder of your IDE.
Please also notice that MSP430-JTAG-TINY-V2 is compatible with software tools that have support for MSP430 Debuck Stack version 2 (MSP430.dll v2). Not compatible with newest versions of IAR Embedded Workbench for MSP430 (6.x.x and after) Not compatible with newest versions of Code Composer Studio (6.1.3 and after).
- Open Settings on Windows 11.
- Click on System.
- Click the Recovery tab.
- Click the Restart now button for the "Advanced startup" setting under the "Recovery options" section.
- Click on Troubleshoot.
- Click on Advanced options.
- Click on Startup Settings.
- Click the Restart button.
- Press "F7" or the "7" key to select the Disable driver signature enforcement option.
The drivers are unsigned so same requirements apply to Windows 10 and Windows 11 installations - first temporary disable "driver signature enforcement" and then install the drivers. Disabling the "driver signature enforcement" is kind of tricky, but there are many guides on how it can be done manually. After the driver installation the unit should be listed as "Olimex Tiny v2.00 JTAG for MSP430 (COMX)". If it gets listed differently you haven't pointed to the proper drivers.
Remember to copy-paste the latest dll files to the proper folder of your IDE.
Please also notice that MSP430-JTAG-TINY-V2 is compatible with software tools that have support for MSP430 Debuck Stack version 2 (MSP430.dll v2). Not compatible with newest versions of IAR Embedded Workbench for MSP430 (6.x.x and after) Not compatible with newest versions of Code Composer Studio (6.1.3 and after).