From 557c96e0802f283cfc552ff10d867afb79fd2fdf Mon Sep 17 00:00:00 2001 From: bondus Date: Wed, 10 Jun 2020 00:44:23 +0200 Subject: [PATCH 1/2] Update README.md typo --- README.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/README.md b/README.md index 439e752..ae54cbd 100644 --- a/README.md +++ b/README.md @@ -59,7 +59,7 @@ Version 0.4 is almost complete. * Serial pins removed, not very useful anyway * Fan/heater connectors tweaked to be able to fit JST XH, screw terminals or Molex KK connectors. * Added a micro-USB connector for easier flashing and possibly other features. The board is not powered from USB. -* Switched to an STM32F106, mainly to allow for a proper bootloader and flashing over USB. Or even over CAN if I develop a custom bootloader. With many boards it would be very nice to be able to bulk flash them all at once over CAN. +* Switched to an STM32F103. Mainly to allow for a proper bootloader and flashing over USB. Or even over CAN if I develop a custom bootloader. With many boards it would be very nice to be able to bulk flash them all at once over CAN. I have done thermal stress testing of the board. It can run a big stepper at 1.5A, board attached very close to the hot stepper with no forced airflow and 25C ambient. The driver reaches 90C (measured with a probe) but does not shut down due to overheating. The entire board heats up as designed to act as a heatsink, most inner and outer copper layers are groundplanes to spread the heat. From 21a9d1014e0a790f540ce716a1ad5ed0f0ac8f5e Mon Sep 17 00:00:00 2001 From: bondus Date: Wed, 10 Jun 2020 18:08:44 +0200 Subject: [PATCH 2/2] Update README.md --- README.md | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/README.md b/README.md index ae54cbd..de7d704 100644 --- a/README.md +++ b/README.md @@ -24,7 +24,7 @@ Change ideas: --- -2020-05-18: +## 2020-05-18: First prototype production run is done. @@ -32,7 +32,8 @@ First prototype production run is done. They work! -2020-05-29: +--- +## 2020-05-29: ![Test setup](TestSetup.jpg) @@ -47,8 +48,8 @@ After a lot of software work and many hours of testing I can report that everyth It is possible to fit different connectors for most functions. It is designed for mostly angled JST-XH or screw terminals but it's possible to fit straight connectors or other 2.54mm for most functions. JLCPCB do not mount through holes so the boards come without connectors. For a larger (>30) production run the boards would have to be panellized, which looks like a non-trivial task with KiCAD. If anyone has experience and wants to help ... - -2020-06-10: +--- +## 2020-06-10: Version 0.4 is almost complete.