Recent content by Headless

Good choice! It looks as though it's the replacement for the BSS100, same spec just not available in the old TO92 package. There are some projects that use it for switching LEDs, with the Gate input being 3.3V logic, so it should be fine - and with 100V Drain/Source breakdown battery voltage is...

Obviously it works, but the datasheet describes this as a logic-level device that can work directly with 3V devices? Mosfets (other than logic-level mosfets?) so far as I remember are voltage devices and don't need current-limiting resistors on the inputs like transistors, but beyond that...

Please can you confirm where the 150K resistor is connected? The datasheet is as below:-

That is correct. BTS4140N Input pin floating = OFF BTS4140N Input pin grounded = ON If all the nRF pins are high-impedance on start-up this should be safe. Nice work!

It looks great and the Garmin seems really flexible in displaying the data you want. Just out of curiosity, is it possible to display actual speed, rather than GPS calculated speed, in eBike mode? It's nice to have good tools at your disposal, but don't be too modest! Hope the stress levels...

Okay, I didn't think about how the 860C would write any config. changes to the motor-controller. :oops: I guess the basic information would still be good and updated on the main page, but..... I guess the only way to do it would be to copy the ESP-32 board and have a dual-UART. As far as I...

That's a lot to process! :shock: You guys are both cheating - it sounds like you've done this before! My battery has a switch as well, but in all honesty I'm tempted to link it out as it looks way too small for 20+ Amps. There is no dedicated display supply - the 5V is only there on the...

I'm guessing everyone is starting to get busier as things come back online, so is there any merit in using the ESP-32 Android App as starting point, to save on duplication? Just out of curiosity, I'm going to install Android Studio when I can find my Windows laptop and have a look. Don't expect...

Having re-read the datasheets and trawled through Mouser, I think the Buck IC is one of these https://www.monolithicpower.com/en/mp2148.html. When the Vin drops below Vout (3.3V on the dongle) the Fet output is permanently switched on, which is okay with ~3V cell, but the under-voltage lock-out...

With battery voltage monitoring circuit and brakes on one input - leaves 2x GPIOA and 2x GPIO. The two NFC DIOs have other components connected to them, so not ideal for buttons.

1. I think so, but I can't find the part number of the tiny DC-DC converter. Do you have a microscope? :D There seem to be various ways you can use the internal PSU on the nRF52840 to increase efficiency. CR2032 etc. all seem to work down to 2V, and the nRF52840 runs down to 1.7V - I've made a...

Do you mean like this?

@casainho - would this be useable? https://www.aliexpress.com/item/32845674676.html I don't know if the nRF52832 is current model?

Wouldn't the easiest be to use another lower spec nRF product? I assume you mean a self-contained Bluetooth button using the VLCD5 keypad, a Bluetooth GPIO processor and a button cell? Easy to wire up, I'll leave the programming to you - making it neat would be an issue! Perhaps the brakes could...

@casinho - My brain is grinding to a halt! The https://opensourceebikefirmware.bitbucket.io/development_tsdz2/Datasheets_and_application_notes--STM8S105S4T6.html datasheet shows that @V.DD = 5V, the STM8S105 V.IH Min = 0.7 x V.DD == 3.5V :warn: Which are CMOS levels, so a 3.3V output from the...