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Forum Index : Microcontroller and PC projects : Armmite F4 - alternate ?

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Volhout
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Joined: 05/03/2018
Location: Netherlands
Posts: 4815
Posted: 12:49pm 28 Aug 2020
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  matherp said  VG version is fine - just twice the FLASH. However there is something very suspicious about the pricing of these chips. Check this out and compare with a unit price of $10.51 from ST direct in volumes up to 500. The pricing of the VET board seems more possible - cheaper chip on a board that sells for more and made in huge volumes



YEAH...

PicomiteVGA PETSCII ROBOTS
 
Volhout
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Location: Netherlands
Posts: 4815
Posted: 01:05pm 28 Aug 2020
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  lizby said  Here's what the chip looks like, but I don't know what it might tell me:




Looking at the markings the chip is from week 48 from 2019. That is totally possible.
I only hope the "e3" marking does not imply these are engineering samples.
See below (this is the marking of an LPC176 package, so the 100pin will have different markings).


PicomiteVGA PETSCII ROBOTS
 
JohnS
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Joined: 18/11/2011
Location: United Kingdom
Posts: 3988
Posted: 04:05pm 28 Aug 2020
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I think e3 is a JEDEC mark (for Sn, i.e. tin)

John
 
lizby
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Joined: 17/05/2016
Location: United States
Posts: 3299
Posted: 01:31pm 03 Jun 2021
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FWIW, yesterday I found the two of these "alternate" F4 boards which I had hidden away after having troubles with them. I flashed with ArmmiteF4V5.07.00b14.bin and for the limited amount of testing I did, they seemed fine.

With the maturity of MMBasic on the bigger F4 board, and the prospects of the PicoMite, I don't expect to do anything further with these boards.
PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed
 
disco4now

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Joined: 18/12/2014
Location: Australia
Posts: 965
Posted: 11:49pm 03 Jun 2021
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These smaller form factor boards seem to do everything the bigger ones can. The latest F4 manual (Draft 3) covers them.
Latest F4 Latest H7 FotS
 
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