William Lucid asked 2 years ago
Product specification: 10 uA current deep sleep current.. Relative new product; hard to find in USA.
William
Banana Pi BPI-PicoW-S3 is a series of low-powered microcontrollers
Sara Santos Staff answered 2 years ago
Hi.
Have you experimented with that board?
What’s your feedback?
Regards,
Sara
William Lucid answered 2 years ago
Hi Sara,
This is a new product; with samples just becoming available this week! Attempting to place an order now with the manufacture.
Regards,
William
William Lucid answered 2 years ago
Waiting for product to become more available; with more favorable shipping rates.
Manufacture wanted $56.00 to ship, with no other shipping options available.
Aliexpress shipping is per device $8 and change.
Regards,
William
Sara Santos Staff answered 2 years ago
Hi.
Yes, it’s better to wait for a better shipping rate.
Then, let us know if you get the board.
Regards,
Sara
William Lucid answered 2 years ago
Ordered10/3/2022 from GeeekPi Store on AliExpress with free shipping.
Estimated delivery Nov. 4, 2022.
GeeekPi Store on AliExpress
Regards,
William
Sara Santos Staff answered 2 years ago
Great!
Thanks for the update.
Then let us know your thoughts about the board when you start experimenting.
Regards,
Sara
William Lucid answered 2 years ago
Hi,
Just wound a diy shunt; 22 Gauge wire folded in half, wound on a xacto knife handle, measured .40 ohms. Voltage source to BPI PicoW-S3 was a LDO 3.3 Volt regulator. Circuit was on breadboard with an LED only active in awake mode. Initially shunt was “cold” pruduced reading of 14 uA. Shunt after being in circuit awhile produced 17 uA. Both uA reading are from the BPI-PicoW-S3 in deep sleep ; WiFi and Bluetooth turned off. No USB connection. 3.3 Volts applied at +3V3 regulator pin. Also in the circuit CH340 USB to Serial device.
Regards,
William
William Lucid answered 2 years ago
When I initally started working with the BPI PicoW-S3; had trouble getting s USB serial port. Contacting BPI, Their engineer provided this method:
Connect to the computer via USB, use tweezers to short the BOOT, then press the Reset button and release it, and finally disconnect the BOOT short. BPI PicoW-S3 has no boot button; only a reset button.
I believe the BPI PicoW-S2 ships ready to run Micro-Python and this was my issue; however, issue was quickly resolved.
Amazon is listing BPI-PicoW-S3 boards. This board is advertized as being ultra-low power at 10 uA deep Sleep.
My quick and dirty setup on breadboard likely accounts for the difference from the advertized Ultra-low power rating.
Regards,
William
Sara Santos Staff answered 2 years ago
Hi.
Thanks for providing the solution of putting the board in BOOT mode.
I haven’t had the chance to try that board yet.
Regards,
Sara