MicroBoSL - Revision history

Stephen: /* 7th July 2022 */

2022-07-07T03:25:37Z

7th July 2022

Stephen: /* 7th July 2022 */

2022-07-07T03:15:45Z

7th July 2022

Stephen: /* 6th July 2022 */

2022-07-07T01:39:22Z

6th July 2022

Stephen: /* 5th July 2022 */

2022-07-06T05:40:36Z

5th July 2022

Stephen: /* 5th July 2022 */

2022-07-05T05:04:51Z

5th July 2022

Stephen: /* 17th May 2022 */

2022-07-05T05:00:30Z

17th May 2022

Ephmlab at 22:26, 30 May 2022

2022-05-30T22:26:22Z

Ephmlab at 22:26, 30 May 2022

2022-05-30T22:26:04Z

Stephen: /* 17th May 2022 */

2022-05-17T05:03:38Z

17th May 2022

Stephen: /* 24th June 2021 */

2022-05-17T01:47:14Z

24th June 2021

← Older revision		Revision as of 03:25, 7 July 2022
Line 209:		Line 209:
	The Si446x arduino library was used to communicate with the Si4463 radio chip, first the appropriate pins for the microbosl had to be set in the config file. While communication was possible with the Si4463 it was quite buggy and actions like probing various traces improved the reliability of the communication. This seems a hardware issue either something is not making good connection or components are interfering with each other.		The Si446x arduino library was used to communicate with the Si4463 radio chip, first the appropriate pins for the microbosl had to be set in the config file. While communication was possible with the Si4463 it was quite buggy and actions like probing various traces improved the reliability of the communication. This seems a hardware issue either something is not making good connection or components are interfering with each other.

−	An error was found on the PCB. The pads on the crystal which should connect to ground are and which should connect to the Si4463 are reversed and incorrect.	+	An error was found on the PCB. The pads on the crystal which should connect to ground are and which should connect to the Si4463 are reversed and incorrect. A quick fix was made to solder the pads of the crystal correctly to the PCB by rotating the crystal 90deg. Following this the Si446x was working much better. It is still uncertain if the wireless functionality is working however.

← Older revision		Revision as of 03:15, 7 July 2022
Line 208:		Line 208:

	The Si446x arduino library was used to communicate with the Si4463 radio chip, first the appropriate pins for the microbosl had to be set in the config file. While communication was possible with the Si4463 it was quite buggy and actions like probing various traces improved the reliability of the communication. This seems a hardware issue either something is not making good connection or components are interfering with each other.		The Si446x arduino library was used to communicate with the Si4463 radio chip, first the appropriate pins for the microbosl had to be set in the config file. While communication was possible with the Si4463 it was quite buggy and actions like probing various traces improved the reliability of the communication. This seems a hardware issue either something is not making good connection or components are interfering with each other.
		+
		+	An error was found on the PCB. The pads on the crystal which should connect to ground are and which should connect to the Si4463 are reversed and incorrect.

← Older revision		Revision as of 01:39, 7 July 2022
Line 204:		Line 204:

	When the ATmega382P was swapped out for a working one the board was able to be uploaded to using the microBoSL profile on the Arduino IDE. Due to the current absence of the CUS08F30,H3F diode, the pads had to be shorted out for the board to work on USB power and means that the switch and motor controller will not yet be able to be tested. The RTC was tested and found to be working.		When the ATmega382P was swapped out for a working one the board was able to be uploaded to using the microBoSL profile on the Arduino IDE. Due to the current absence of the CUS08F30,H3F diode, the pads had to be shorted out for the board to work on USB power and means that the switch and motor controller will not yet be able to be tested. The RTC was tested and found to be working.
		+
		+	== 7th July 2022 ==
		+
		+	The Si446x arduino library was used to communicate with the Si4463 radio chip, first the appropriate pins for the microbosl had to be set in the config file. While communication was possible with the Si4463 it was quite buggy and actions like probing various traces improved the reliability of the communication. This seems a hardware issue either something is not making good connection or components are interfering with each other.

← Older revision		Revision as of 05:40, 6 July 2022
Line 200:		Line 200:
	File:Semisolder.jpg\|microbosl radio populated but not soldered		File:Semisolder.jpg\|microbosl radio populated but not soldered
	</gallery>		</gallery>
		+
		+	== 6th July 2022 ==
		+
		+	When the ATmega382P was swapped out for a working one the board was able to be uploaded to using the microBoSL profile on the Arduino IDE. Due to the current absence of the CUS08F30,H3F diode, the pads had to be shorted out for the board to work on USB power and means that the switch and motor controller will not yet be able to be tested. The RTC was tested and found to be working.

← Older revision		Revision as of 05:04, 5 July 2022
Line 192:		Line 192:

	The pick and place machine and stencil printer printer were used to assemble the microBoSL radio, this was quite effective and the finished product was assembled in about half a day of work. As the soldering oven was not yet set up the hot air gun was used to melt the solder paste. This was a bit tricky as the air tended to blow the very small components away. Some photos of the work in progress states and finished board are provided below. The design has a bit of an issue however, that is that there are no exposed pins to bootload the ATmega328P. This will need to be improved on a future design. In the mean time a pre-boot-loaded chip can be soldered in directly.		The pick and place machine and stencil printer printer were used to assemble the microBoSL radio, this was quite effective and the finished product was assembled in about half a day of work. As the soldering oven was not yet set up the hot air gun was used to melt the solder paste. This was a bit tricky as the air tended to blow the very small components away. Some photos of the work in progress states and finished board are provided below. The design has a bit of an issue however, that is that there are no exposed pins to bootload the ATmega328P. This will need to be improved on a future design. In the mean time a pre-boot-loaded chip can be soldered in directly.
		+
		+
		+	<gallery>
		+	File:Mbr back.jpg\|microbosl radio back
		+	File:Mbr front.jpg\|microbosl radio front
		+	File:Picknplace.jpg\|microbosl radio in pick and place machine
		+	File:Semisolder.jpg\|microbosl radio populated but not soldered
		+	</gallery>

← Older revision		Revision as of 05:00, 5 July 2022
Line 188:		Line 188:

	A 433 MHz radio versions of the microBoSL will also be developed. This will be based on the Si4463 radio which is also used in the HC12 radio module. We use a class E direct tie matching topology for the antenna as described in [https://www.silabs.com/documents/public/application-notes/AN629.pdf] and [https://www.silabs.com/documents/public/application-notes/AN648.pdf]		A 433 MHz radio versions of the microBoSL will also be developed. This will be based on the Si4463 radio which is also used in the HC12 radio module. We use a class E direct tie matching topology for the antenna as described in [https://www.silabs.com/documents/public/application-notes/AN629.pdf] and [https://www.silabs.com/documents/public/application-notes/AN648.pdf]
		+
		+	== 5th July 2022 ==
		+
		+	The pick and place machine and stencil printer printer were used to assemble the microBoSL radio, this was quite effective and the finished product was assembled in about half a day of work. As the soldering oven was not yet set up the hot air gun was used to melt the solder paste. This was a bit tricky as the air tended to blow the very small components away. Some photos of the work in progress states and finished board are provided below. The design has a bit of an issue however, that is that there are no exposed pins to bootload the ATmega328P. This will need to be improved on a future design. In the mean time a pre-boot-loaded chip can be soldered in directly.

@@ Line 4: / Line 4: @@
 == Specifications ==
 Max battery voltage: 12 V
 Here we will document the design of the microBoSL board, a miniaturized version of the BoSL board optimised for automatic pumping operations.

← Older revision		Revision as of 05:03, 17 May 2022
Line 188:		Line 188:
	== 17th May 2022 ==		== 17th May 2022 ==

−	A 433 MHz radio versions of the microBoSL will also be developed. This will be based on the Si4463 radio which is also used in the HC12 radio module.	+	A 433 MHz radio versions of the microBoSL will also be developed. This will be based on the Si4463 radio which is also used in the HC12 radio module. We use a class E direct tie matching topology for the antenna as described in [https://www.silabs.com/documents/public/application-notes/AN629.pdf] and [https://www.silabs.com/documents/public/application-notes/AN648.pdf]

← Older revision		Revision as of 01:47, 17 May 2022
Line 185:		Line 185:

	The o-ring change, the switch of the hall effect pinout and the power switch were fixed in the latest revision of the microBoSL (0.2.2). The crystals were also updated to suit current part availability.		The o-ring change, the switch of the hall effect pinout and the power switch were fixed in the latest revision of the microBoSL (0.2.2). The crystals were also updated to suit current part availability.
		+
		+	== 17th May 2022 ==
		+
		+	A 433 MHz radio versions of the microBoSL will also be developed. This will be based on the Si4463 radio which is also used in the HC12 radio module.