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#1
MSP430 / Re: MSP430F5510 programming
Last post by LubOlimex - July 08, 2025, 09:35:29 AMThe hardware changes and the external power are not needed... The board has Li-Po battery connector when you want to measure minimal consumption.
Also it is strange place to place the multimeter to measure consumption.
Revert the changes and disconnect all power supply and use 3.7V Li-PO battery attached to the 2-pin connector. Pay attention to + and - since these connectors are not standard.
Then to measure ensure that pins are properly set. All pins should be evaluated in the schematic, some pins are pulled up. Those pins with pull up should be set as outputs and high state. Pins that are pulled down should be outputs and low state.
For example, the I2C pins at the UEXT are both pulled up. If these are not set as outputs in high state, they will consume power.
Notice that it makes no sense to measure only the chip, and it will be very hard to do but measuring when powered the battery should be nearly identical, there are only a couple of components consuming uAs and they won't influence the consumption that much.
Also it is strange place to place the multimeter to measure consumption.
Revert the changes and disconnect all power supply and use 3.7V Li-PO battery attached to the 2-pin connector. Pay attention to + and - since these connectors are not standard.
Then to measure ensure that pins are properly set. All pins should be evaluated in the schematic, some pins are pulled up. Those pins with pull up should be set as outputs and high state. Pins that are pulled down should be outputs and low state.
For example, the I2C pins at the UEXT are both pulled up. If these are not set as outputs in high state, they will consume power.
Notice that it makes no sense to measure only the chip, and it will be very hard to do but measuring when powered the battery should be nearly identical, there are only a couple of components consuming uAs and they won't influence the consumption that much.
#2
ESP32 / Re: ESP32-SBC-FabGL .. PCemula...
Last post by LubOlimex - July 08, 2025, 08:16:38 AMFirst consider formatting it completely. Maybe use the sd card alliance formatter - it is from the organization that maintains the standard.
Also consider that the card might be fake. There are a lot of counterfeit SD cards out there and also cards tend to get damaged easily. Good software for testing the SD cards is either f3 (fight flash fraud) or H2testW.
Also consider that the card might be fake. There are a lot of counterfeit SD cards out there and also cards tend to get damaged easily. Good software for testing the SD cards is either f3 (fight flash fraud) or H2testW.
#3
ESP32 / Re: ESP32-SBC-FabGL .. PCemula...
Last post by therese80 - July 07, 2025, 04:57:21 PMHi,
the old sdcard(Sandisk ultra 32GB) it works with my laptop(linux mint) , with
Olimex rp2040-pico-pc .. but not with esp32-sbc-fabgl ... formatted with FAT16/FAT32
the new SDCARD(Philips 32GB) format FAT16/FAT132 works on all systems.!
I don't know why ! Sandisk is not so universel? .
Next time if have the same problem , i begin by changing de brand of SDCARD ...
@+
Therese80 (aka TRS80)
the old sdcard(Sandisk ultra 32GB) it works with my laptop(linux mint) , with
Olimex rp2040-pico-pc .. but not with esp32-sbc-fabgl ... formatted with FAT16/FAT32
the new SDCARD(Philips 32GB) format FAT16/FAT132 works on all systems.!
I don't know why ! Sandisk is not so universel? .
Next time if have the same problem , i begin by changing de brand of SDCARD ...
@+
Therese80 (aka TRS80)
#4
MSP430 / Re: MSP430F5510 programming
Last post by Ahmed - July 07, 2025, 04:09:39 PM Subject: How to measure only MSP430F5510 current on OLIMEXINO-5510 Rev.B (disconnect all other power domains)
Hello,
I am using the OLIMEXINO-5510 Rev.B board with the MSP430F5510 MCU. I want to measure the pure current consumption of the MSP430, without interference from USB, FTDI, UEXT, Arduino headers, etc.
I already:
Removed USB power and supplied 3.3 V externally
Tried to isolate FET2 (IRLML6402) by pulling the gate to 3.3 V
Cut R4 (0 Ω jumper), and inserted a multimeter in series
But even then, I still measure ~57 mA, even when the MCU is in LPM4 mode.
❓ How can I completely isolate the MSP430 power rail and ensure only the MCU current is measured?
Does FET2 fully disconnect the 3.3 V_E rail if gate = 3.3 V?
Are there hidden leakage paths from FTDI or pullups?
Do you recommend removing more components (R5, C6, etc)?
Thanks in advance for any guidance!
Hello,
I am using the OLIMEXINO-5510 Rev.B board with the MSP430F5510 MCU. I want to measure the pure current consumption of the MSP430, without interference from USB, FTDI, UEXT, Arduino headers, etc.
I already:
Removed USB power and supplied 3.3 V externally
Tried to isolate FET2 (IRLML6402) by pulling the gate to 3.3 V
Cut R4 (0 Ω jumper), and inserted a multimeter in series
But even then, I still measure ~57 mA, even when the MCU is in LPM4 mode.
❓ How can I completely isolate the MSP430 power rail and ensure only the MCU current is measured?
Does FET2 fully disconnect the 3.3 V_E rail if gate = 3.3 V?
Are there hidden leakage paths from FTDI or pullups?
Do you recommend removing more components (R5, C6, etc)?
Thanks in advance for any guidance!
#5
New Product Ideas / Re: What does "Olimex" mean?
Last post by LubOlimex - July 07, 2025, 08:47:42 AMTsvetan Usunov came up with the name, it is an abbreviation of "all import export", the "Ol" is the phonetic approximation of "All". The company was founded 1991, you can find more info in the about page here:
https://www.olimex.com/About/
https://www.olimex.com/About/
#6
SHIELDS / Re: Polarity of diodes in Bike...
Last post by LubOlimex - July 07, 2025, 08:37:35 AMYes, checked it today it is proper, LM339 is open collector. Just put the long pin of the diode into the circle pad, as explained in the soldering guide:
https://github.com/OLIMEX/Bike-TSL-Kit/blob/master/DOCUMENTATION/bike-tsl-kit-manual-en.pdf
https://github.com/OLIMEX/Bike-TSL-Kit/blob/master/DOCUMENTATION/bike-tsl-kit-manual-en.pdf
#7
ESP32 / Re: ESP32-SBC-FabGL .. PCemula...
Last post by LubOlimex - July 07, 2025, 08:25:09 AMThank you for the update, glad it is working now. So was the problem the card or the way of preparing it?
#8
NXP / Re: Case for iMX8MP-SOM-EVB-IN...
Last post by rosmo - July 07, 2025, 01:06:03 AMIt would be good to add it to https://github.com/hominoids/SBC_Model_Framework so cases could be generated for printing
#9
AgonLight / Re: Is everyone enjoying their...
Last post by mimisiku - July 06, 2025, 09:32:12 PMBought my AgonLight2 just recently to rekindle my Z80 assembly hobby. Had to relearn the more modern approaches. Cassette and disks don't exist any more. Now have familiarize myself with the Agon H/W specific functions..
Updated MOS and VDP and stored ez80asm and BBCbasic v5 on the ŲSD card.
Updated MOS and VDP and stored ez80asm and BBCbasic v5 on the ŲSD card.
#10
New Product Ideas / UEXT Shield for OLIMEXINO-STM3...
Last post by rosmo - July 06, 2025, 05:36:02 PMI'm thinking of using OLIMEXINO-STM32F3 in a project, but I would need two UEXT devices.
In my case a rs485 and a Env sensor. It would be nice to use Mikrobus click devices too.
I did a quick draft but my PCB skills are amateur: http://bit.ly/45WCPPN
Would you consider turning that into a 'proper' board?
In my case a rs485 and a Env sensor. It would be nice to use Mikrobus click devices too.
I did a quick draft but my PCB skills are amateur: http://bit.ly/45WCPPN
Would you consider turning that into a 'proper' board?